Consulta: subjectFacets:"Parasite"
Registros recuperados: 113
Data/hora: 13/06/2024 07:11:21

Hexamermis paranaense new species (Nematoda, Mermithidae): a parasite of Diloboderus abderus (Coleoptera, Scarabaeidae) in Argentina
Provedor de dados: 76
Autores: Achinelly,María Fernanda; Camino,Nora Beatriz.
A new species, Hexamermis paranaense n. sp. (Nematoda, Mermithidae), a parasite of larvae of Diloboderus abderus Sturm, 1826 (Coleoptera, Scarabaeidae) is described and illustrated. This new species is characterized by amphids small, amphidial opening pocket-shaped, the anterior portion of the vagina muscularized and slightly protruding with a descending branch forming a loop before joining the uterus, and three rows of genital papillae: the ventrolateral divided in two rows with eight papillae in the outer row and with six papillae in the inner one; the ventral row with four pairs and one single preanal papillae, and with two pairs, a triplete, one pair, a single and one pair postanal papillae.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hexamermis paranaense n. sp.; Nematoda; Mermithidae; Parasite; Scarabaeidae; Argentina.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000400007

Nueva especie de Cephalobium (Rhabditida, Diplogasteridae) parasito de ninfas de Gryllodes Laplatae (Orthoptera, Gryllidae) en la Argentina
Provedor de dados: 76
Autores: Camino,Nora B.; Reboredo,Guillermo R.
Cephalobium bidentatum sp. nov., parasitizing nymphs of Gryllodes laplatae Sauss (Orthoptera, Gryllidae) from Argentina, is described and illustrated. It is distinguished from other members of the genus Cephalobium COBB, 1920, by having the buccal cavity very sclerotized with two hook-shaped teeth, vagina short and muscular, male has two spicules with hook-shaped tips, and by the distribution pattern of the postanal papillae: one pair under the anus, three pairs between the anus and the tail, and two pairs at the base of the tail appendage.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nematoda; Cephalobium bidentatum; Gryllidae; Parasite; Taxonomy.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212000000200008

Eimerideos parasitos de ruminantes nos sertões de Pernambuco, Bahia, Ceará e Piauí.
Provedor de dados: 14
Autores: PADILHA, T. N.; VASCONCELOS, F. A. B. de; LIMA, M. E. F.
Poucas são as observações sobre as espécies de eimerideos que parasitam ruminantes em nosso País.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Patologia animal; Parasita; Pernambuco; Bahia; Ceara; Piaui; Sertao; Disease; Parasite; Ruminant.; Ruminante; Eimeriose; Doença.; Animal pathology; Ruminants.
Ano: 1980
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/132782

Ocorrência de parafilaríase e oncocercíase cutânea em búfalos (Bubalus bubalis).
Provedor de dados: 14
Autores: LAU, H. D.; SINGH, N. P.
bitstream/item/31957/1/CPATU-BP80.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Bubalino; Raca Mediterraneo; Raca Carabao; Parasita; Controle; Triclorfon; Parafilariasis; Campo experimental do Baixo Amazonas; Monte Alegre; Pará; Brasil; Buffalo; Parasite; Control; Trichlonphon.; Oncocercíase.; Amazonia.
Ano: 1987
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383648

Efeito do tratamento anti-helmintico no ganho de peso de bezerros holandes-zebu em aleitamento em Rondonia.
Provedor de dados: 14
Autores: SILVA NETTO, F. G. da; FILHO, A. B. de L.; FAGUNDES FILHO, J. J.
Procurou-se determinar melhor esquema de medicacao anti-helmintica para controle da verminose de bezerros na fase de aleitamento das bacias leiteiras de Rondonia. Experimento conduzido na fazenda Santa Rita de Cassia, municipio de Porto Velho-RO, no periodo de janeiro a setembro/1985. Concluiu-se que bezerros em aleitamento tratados com tres esquemas de medicacao anti-helmintica, de amplo espectro de acao, ganharam mais peso que animais nao tratados e criados nas mesmas condicoes. Os esquemas de vermifugacao a cada 45, 60 e 90 dias aliados a suplementacao alimentar volumosa e mineral em condicoes de baixa infestacao da pastagem, demostraram eficacia, proporcionando maior rentabilidade em relacao a testemunha. Demais categorias animais da propriedade...
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Anti helmintico; Nematodeo; Brasil; Rondonia; Porto Velho; Parasite; Animal; Bezerro; Bovino; Gado; Helminto; Verminose; Brazil; Cattle.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/682904

Verminose equina: sugestoes para um melhor controle em animais em fazenda.
Provedor de dados: 14
Autores: HONER, M. R.; BIANCHIN, I.
bitstream/item/138557/1/COT-28.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Equino; Parasita; Sanidade; Controle; Equine; Helminthoses; Nematode; Parasite; Control; Management; Health.; Manejo; Nematóide; Verminose.
Ano: 1985
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/318770

Bubalinos: manejo sanitário.
Provedor de dados: 14
Autores: LAU, H. D.
bitstream/item/34628/1/RecBas-10.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Bubalino; Controle; Buffalo; Management; Disease; Control; Verminosis; Parasite; Insecticide.; Bubalus Bubalis; Doença; Inseticida; Manejo; Parasito; Verminose.
Ano: 1988
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381215

Amblyomma variegatum: um novo carrapato para a América do Sul?
Provedor de dados: 14
Autores: HONER, M. R.
bitstream/item/138776/1/COT-36.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Amblyomma variagatum; America do Sul; Bovine; Deseases; Disease; Parasita; Parasite; Tick.; Bovino; Boophilus Microplus; Animal; Carrapato; Controle Biológico; Doença.; Amblyomma variegatum; Biological control.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1036687

The planktonic stages of the salmon louse ( Lepeophtheirus salmonis) are tolerant of end-of-century p CO2 concentrations
Provedor de dados: 5
Autores: Thompson, Cameron R.s.; Fields, David M.; Bjelland, Reidun M.; Chan, Vera Bin San; Durif, Caroline M.f.; Mount, Andrew; Runge, Jeffrey A.; Shema, Steven D.; Skiftesvik, Anne Berit; Browman, Howard I.
The copepod Lepeophtheirus salmonis is an obligate ectoparasite of salmonids. Salmon lice are major pests in salmon aquaculture and due to its economic impact Lepeoph- theirus salmonis is one of the most well studied species of marine parasite. However, there is limited understanding of how increased concentration of pCO2 associated with ocean acidification will impact host-parasite relationships. We investigated the effects of increased pCO2 on growth and metabolic rates in the planktonic stages, rearing L. salmonis from eggs to 12 days post hatch copepodids under three treatment levels: Control (416 matm), Mid (747 matm), and High (942 matm). The pCO2 treatment had a significant effect on oxygen consumption rate with the High treatment animals exhibiting...
Tipo: Text
Palavras-chave: Salmon lice; Copepod; Ocean acidification; Parasite; Energetics; Metabolism; Growth; Lipid; Lepeophtheirus salmonis; Aquaculture.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00588/69998/67911.pdf

Rapport d'activité année 1977 du Laboratoire de Biologie Conchylicole de La Rochelle
Provedor de dados: 5
Autores: Dardignac, Marie-jose.
Rapport d'activité du Laboratoire de Biologie Conchylicole de La Rochelle concernant l'année 1977
Tipo: Text
Palavras-chave: Conchyliculture; Reproduction; Estimation stocks; Valorisation claires ostréicoles; Parasite; Pathologie; Crassostrea gigas; Mytilus edulis; Pertuis Breton.
Ano: 1977
URL: http://archimer.ifremer.fr/doc/00070/18092/15640.pdf

A first genetic linkage map of the European flat oyster, Ostrea edulis : towards the identification of Bonamia resistance QTLs
Provedor de dados: 5
Autores: Lallias, Delphine; Lapegue, Sylvie; Haley, Chris; Heurtebise, Serge; Boudry, Pierre; Beaumont, Andy.
The flat oyster Ostrea edulis is an endemic European oyster species, found on both Atlantic and Mediterranean coasts. Its aquacultural production has dramatically decreased due to two successive diseases caused by the intracellular parasites Marteilia refringens and Bonamia ostreae. Since 1985, Ifremer has undertaken a breeding program to produce oyster families which are tolerant to Bonamia. In this context, the next step is to identify QTLs for resistance to this parasite. A genetic map is therefore being established as a basis for QTL work. The reference family is an F2 family produced by single pair mating of two oysters from the same F1 family. The F1 family was itself produced from a bi-parental cross between a wild oyster and an individual from the...
Tipo: Text
Palavras-chave: Genetic linkage map; Parasite; Genetic; QTLs; Resistance; Bonamia ostreae; Ostrea edulis; Flat oyster.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/acte-3464.pdf

Biogeographical Patterns of Endolithic Infestation in an Invasive and an Indigenous Intertidal Marine Ecosystem Engineer
Provedor de dados: 5
Autores: Ndhlovu, Aldwin; Mcquaid, Christopher D.; Nicastro, Katy; Marquet, Nathalie; Gektidis, Marcos; Monaco, Cristian; Zardi, Gerardo.
By altering the phenotypic properties of their hosts, endolithic parasites can modulate the engineering processes of marine ecosystem engineers. Here, we assessed the biogeographical patterns of species assemblages, prevalence and impact of endolithic parasitism in two mussel species that act as important ecosystem engineers in the southern African intertidal habitat, Perna perna and Mytilus galloprovincialis. We conducted large-scale surveys across three biogeographic regions along the South African coast: the subtropical east coast, dominated by the indigenous mussel, P. perna, the warm temperate south coast, where this species coexists with the invasive Mediterranean mussel, M. galloprovincialis, and the cool temperate west coast dominated by M....
Tipo: Text
Palavras-chave: Biogeographical region; Mytilus galloprovincialis; Perna perna; Rocky shores; Parasite.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00605/71689/70129.pdf

Contribution à la validation et à l'optimisation de la technique de PCR pour la détection de Bonamia ostreae chez l'huître plate : Ostrea edulis
Provedor de dados: 5
Autores: Touzeau, Damien.
L'ostréiculture représente une part économique régionale et française importante avec une production d'environ 117 106 Tonnes de coquillages par an (FAO, 2003). Cependant le développement de cette activité peut être limité par des mortalités, parfois massives, dues à des maladies infectieuses. L'huître plate Ostrea edulis a subi deux maladies majeures : la Marteiliose due à Marteilia refringens et la Bonamiose due à Bonamia ostreae. Ces maladies à déclaration obligatoires ont fait chuter la production de 20 000 tonnes dans les années 70 à 2 098 Tonnes aujourd'hui. Suite à ces mortalités, différents programmes de recherche ont été lancés par Ifremer pour tenter de préserver voire de relancer la culture de l'huître plate. Un de ces programmes concerne la...
Tipo: Text
Palavras-chave: Huître plate; Ostrea edulis; Parasite; Bonamia ostreae; Technique PCR; ARN 18 S; Diagnostic.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/00034/14478/11777.pdf

Diagnostic quantitatif de Perkinsus atlanticus (Apicomplexa, Perkinsea) chez les palourdes Ruditapes decussatus et Ruditapes philippinarum
Provedor de dados: 5
Autores: Almeida, Manuela.
Le protozoaire parasite Perkinsus atlanticus (Azevedo, 1989) est une des causes des chutes de production de palourdes Ruditapes decussatus et R. philippinarum cultivées au Portugal, en Espagne et en Italie. Des modèles d'infection de Perkinsus ont été réalisés, par reproduction expérimentale de la maladie, pour étudier le rôle de la densité des palourdes, de la température et de la salinité sur le déroulement de la Perkinsiose. L'objectif de ce travail a été de développer une technique de diagnostic quantitative pour optimiser l'évaluation de l'intensité d'infection et détecter de faibles infections des palourdes par P. atlanticus. Le principe de cette technique consiste à cultiver tous les tissus de la palourde en milieu thioglycolate, suivi d'une lyse à...
Tipo: Text
Palavras-chave: Pathologie; Protozoaire; Parasite; Perkinsus atlanticus; Bivalvia; Ruditapes decussatus; Ruditapes philippinarum; Diagnostic.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00033/14416/11710.pdf

Caractérisation moléculaire du parasite du genre Perkinsus infectant les palourdes en France et étude du polymorphisme génétique en fonction de son origine géographique
Provedor de dados: 5
Autores: Michel, Justine.
En 2004 et 2005, une étude menée par le REPAMO (Réseau de Pathologie des Mollusques) a montré que des parasites du genre Perkinsus étaient présentas au sein des principaux domaines français de production de palourdes: La Mer Méditerranée, l'Océan Atlantique et la Manche avec une forte prévalence amis aucun cas de mortalités associées. Cependant, ces résultats doivent être complétés par des analyses moléculaires plus spécifiques de façon à déterminer la ou les espèces de Perkinsus détectés. D'autre, part, l'étude a montré que différents facteurs environnementaux (température, salinité...) liés à la répartition géographique influencent le développement de parasite. Ces résultats suggèrent l'existence d'une variabilité génétique chez le ou les parasites du...
Tipo: Text
Palavras-chave: Parasite; Perkinsus; PCR; Ruditapes decussatus; Ruditapes philippinarum; Variabilité génétique.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/00033/14453/11754.pdf

First record of Marteilia sp in mussels Mytilus galloprovincialis in Croatia
Provedor de dados: 5
Autores: Zrncic, Snjevana; Le Roux, Frédérique; Oraic, Drazen; Sostaric, Branko; Berthe, Franck.
Marteiliosis is a disease of molluscs caused by Marteilia refringens in Europe and M. sydneyi in Australia. During routine examination of cultured mussels Mytilus galloprovinciallis in the northern Adriatic, the occurrence of Marteilia sp. was recorded with a prevalence of 5 %. This parasite was not detected in flat oysters reared in the same area. The affiliation of the detected parasite in M. galloprovinciallis was confirmed by in situ hybridization using a M. refringens probe, specific at the genus level. DNA of these infected mussels originating from the same area will be used to clarify the taxonomic position of this species within the genus Marteilia using a molecular approach.
Tipo: Text
Palavras-chave: Taxonomy; Detection; Mytilus galloprovincialis; Parasite; Marteilia maurini.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/publication-817.pdf

Observations sur le cycle de Marteilia refringens
Provedor de dados: 5
Autores: Grizel, Henri; Tige, Gilbert.
Observations on the cycle of Marteilia refringens in light and electronic microscopy led us to realise in situ experiences of experimental infestation. According to the rivers the period of infestation varied between may and auguste. During the winter the parasite seems to be absent from the tissues of the oyster.
Tipo: Text
Palavras-chave: Ostrea edulis; Parasite; Infestation; Marteilia refringens.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/1979/publication-3225.pdf

Study of interactions between flat oyster, Ostrea edulis, and the parasite Bonamia ostreae using flow cytometry and suppression subtractrive hybridization (SSH)
Provedor de dados: 5
Autores: Morga, Benjamin; Arzul, Isabelle; Faury, Nicole; Gagnaire, Beatrice; Chollet, Bruno; Renault, Tristan.
Bonamiosis due to the intrahaemocytic protistan parasite Bonamia ostreae is a European endemic disease affecting flat oysters Ostrea edulis. Control of bonamiosis requires a good knowledge of the parasite life cycle including host-parasite interactions. In this study, we investigated interactions between parasites and haemocytes by flow cytometry and Suppression Subtractive Hybridization (SSH). In both approaches, analyses were performed after 2 hours of contact between haemocytes and parasites purified from highly infected flat oysters. Flow cytometry analyses consisted in testing haemocyte activities including esterase activities, reactive oxygen species (ROS) production and phagocytosis after contact with live parasites and parasites inactivated by...
Tipo: Text
Palavras-chave: SSH; Suppression subtractive hybridization; Cytometry; Bonamia ostreae; Parasite; Ostrea edulis; Oyster.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/acte-3367.pdf

Evolution de la situation épizootiologique en Bretagne en 1983 suite au développement de Bonamia ostreae
Provedor de dados: 5
Autores: Tige, Gilbert; Grizel, Henri; Cochennec, Nathalie; Rabouin, Marie-agnès.
Bonamia ostreae diseease is always present in Brittany in the different farming areaa except few free natural oysters beds. Yet Bonamiose disease have not increased in the Bay of Cancale on oysters initialy very few parasited. The technical modifications of rearing and the eradication on sick oysters could explain this situation.
Tipo: Text
Palavras-chave: France; Bretagne; Pathologie; Parasite; Bonamiose; Bonamia ostreae.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-4971.PDF

Etude des intéractions entre le parasite Bonamia ostreae et son hôte, huître plate Ostrea edulis in vitro
Provedor de dados: 5
Autores: Morga, Benjamin; Arzul, Isabelle; Chollet, Bruno; Gagnaire, Beatrice; Renault, Tristan.
Bonamiosis is a disease affecting the flat oyster Ostrea edulis and caused by the protozoa parasite Bonamia ostreae, which is affiliated to the haplosporidia order and the cercozoa phylum. This parasite is mainly intracellular, infecting haemocytes, circulating cells playing an important role in the oyster's defence mechanisms. Even though the parasite's cycle has not been completely understood yet, direct infection from infected oysters to healthy oysters is possible. This leads us to think that there is no intermediary host in the cycle. Very little data on the parasite's infection mechanisms or the host's defence mechanisms is available. In order to better comprehend the Bonamia ostreae / host interaction, some flat oyster's haemocytes have been put in...
Tipo: Text
Palavras-chave: Hémocytes; Ostrea edulis; Bonamia ostreae; Parasite; Huîtres.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/acte-3368.pdf

Molecular characterization of parasites of the genus Perkinsus present in clams from French producing areas
Provedor de dados: 5
Autores: Arzul, Isabelle; Michel, Justine; Chollet, Bruno; Robert, Maeva; Miossec, Laurence; Garcia, Celine; Francois, Cyrille.
Production of clams is the third most important bivalve production in France and was estimated at 3400 metric tons in 2001 among which 60% came from aquaculture and 40% from fisheries. Surveillance of clam diseases mainly relies on histology and thioglycolate culture, two techniques allowing detection of parasites of the genus Perkinsus but not specific enough to determine the parasite species. Based on a previous study aiming at estimating distribution and prevalence of perkinsosis in France, we selected 34 infected clams from 4 different producing areas in order to characterize the parasite species. Molecular characterization was done by PCR-RFLP targeting the ITS region as described by Abollo et al. (2006). 16 PCR products were cloned and 10 to 20...
Tipo: Text
Palavras-chave: French producing areas; Clams; Perkinsus olseni; Parasite.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/acte-6269.pdf

Sur un copépode parasite de l'huître portugaise (Crassostrea angulata Lmk) dans le bassin de Marennes- Oléron
Provedor de dados: 5
Autores: Comps, Michel.
Dans le bassin de Marennes-Oléron, à partir de l’hiver 1970, on a observé chez Crassostra angulata la présence d’un copépode fixé sur les branchies. Cet organisme a attiré l’attention de certains ostréiculteurs et ce, d’autant plus qu’il n’était rencontré que chez les huîtres immergées dans des claires. Ce copépode posséderait des caractéristiques morphologiques proches de celles des Pseudomyicolidae
Tipo: Text
Palavras-chave: Copépode; Parasite; Huîtres; Crassostrea angulata; Pseudomyicola; Marennes Oléron; Charente Maritime.
Ano: 1972
URL: http://archimer.ifremer.fr/doc/00009/12004/8696.pdf

A first linkage map for the European flat oyster, Ostrea edulis towards the identification of Bonamia resistance QTLs
Provedor de dados: 5
Autores: Lallias, Delphine; Beaumont, Andy; Haley, Chris; Heurtebise, Serge; Boudry, Pierre; Lapegue, Sylvie.
The flat oyster Ostrea edulis is an endemic European oyster species, found on both Atlantic and Mediterranean coasts. Its aquacultural production has dramatically decreased due to two successive diseases caused by the intracellular parasites Marteilia refringens and Bonamia ostreae. Since 1985, Ifremer has undertaken a breeding program to produce oyster families which are tolerant to Bonamia. In this context, a genetic map was therefore established as a basis for Quantitative Trait Loci (QTLs) analysis. The reference family was an F2 family coming from a first bi-parental cross between a wild oyster and an individual from the fifth generation inbred line of the Bonamia tolerance selection program. This inbred line had shown no mortality when reared in...
Tipo: Text
Palavras-chave: Parasite; Bonamia ostreae; Bonamiosis; QTL; Genetic; Ostrea edulis; Flat oyster.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/acte-3459.pdf

Diverse molecular signatures for ribosomally 'active' Perkinsea in marine sediments
Provedor de dados: 5
Autores: Chambouvet, Aurelie; Berney, Cedric; Romac, Sarah; Audic, Stephane; Maguire, Finlay; De Vargas, Colomban; Richards, Thomas A.
Background: Perkinsea are a parasitic lineage within the eukaryotic superphylum Alveolata. Recent studies making use of environmental small sub-unit ribosomal RNA gene (SSU rDNA) sequencing methodologies have detected a significant diversity and abundance of Perkinsea-like phylotypes in freshwater environments. In contrast only a few Perkinsea environmental sequences have been retrieved from marine samples and only two groups of Perkinsea have been cultured and morphologically described and these are parasites of marine molluscs or marine protists. These two marine groups form separate and distantly related phylogenetic clusters, composed of closely related lineages on SSU rDNA trees. Here, we test the hypothesis that Perkinsea are a hitherto under-sampled...
Tipo: Text
Palavras-chave: 454 pyrosequencing; Perkinsus; Parvilucifera; Food web; Protist; Parasite.
Ano: 2014
URL: https://archimer.ifremer.fr/doc/00374/48496/48830.pdf

Recherches sur un protiste, parasite nouveau de l'huître plate des côtes françaises
Provedor de dados: 5
Autores: Comps, Michel.
Following a number of mortalities reported on the flat oyster farms of the Ile Tudy in June 1979, a Protiste, a parasite then unknown in France, was found in the sick oysters. Located mainly in the connective tissue and the branchial epithelium, this parasite is associated with tissue damage. It can be either of a free type or of an intracellular type, both corresponding to small size cells (2 to 3 µm) and displaying, next to their core, one or two mitochondrion and some structured electron-dense particles. Moreover, different mitosis stages, with nuclear membrane persistence, have been observed. These ultrastructural characteristics show some similarities and differences with the Haplosporidies and Marteilia groups.
Tipo: Text
Palavras-chave: Mortalités; Parasite; Ostreae edulis; Huître plate.
Ano: 1982
URL: http://archimer.ifremer.fr/doc/1982/acte-6155.PDF

Rapport sur l'activité du Laboratoire de La Tremblade - Année 1956
Provedor de dados: 5
Autores: Trochon, Pierre.
Rapport sur l'activité du Laboratoire ISTPM de La Tremblade concernant l'année 1956
Tipo: Text
Palavras-chave: Conchyliculture; Rapport d'activité; Météorologie; Parasite; Mortalité; Reproduction; Claire ostréicole; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1956
URL: http://archimer.ifremer.fr/doc/00069/18068/15612.pdf

Essais d'infestations expérimentales entre Crassostrea rhizophorae et Carcinus maenas
Provedor de dados: 5
Autores: Grizel, Henri; Tige, Gilbert.
Following our aim of developing oyster culture in French Guyana and studying the different options available to increase a stock of new oyster species, we were lead to search for possible parasites in Crassostrea rhizophorae. These oysters from the French Guyanese coasts host some gregarine Nematopsis sp. spores, characterized by Comps, Grizel and Tige (1972). Through this work, we conducted some experimental infestation trials between Crassostrea rhizophorae spats parasited by these spores and the most common crab on metropolitan farms Carcinus maenas.
Tipo: Text
Palavras-chave: Naissain; Infestations expérimentales; Parasite; Carcinus maenas; Crassostrea rhizophorae; Pathologie.
Ano: 1975
URL: https://archimer.ifremer.fr/doc/1975/acte-6290.PDF

Effects of temperature and salinity on the survival of Bonamia ostreae parasite infecting falt oyster Ostrea edulis in sea water
Provedor de dados: 5
Autores: Arzul, Isabelle; Bond, Celine; Gagnaire, Beatrice; Chollet, Bruno; Morga, Benjamin; Ferrand, Sylvie; Robert, Maeva; Renault, Tristan.
Bonamiosis due to the intrahaemocytic protistan parasite Bonamia ostreae is a European endemic disease affecting flat oysters Ostrea edulis. The parasite has been described in different ecosystems from estuaries to open sea and no clear correlations could be demonstrated between the development of the disease and environmental parameters such as temperature or salinity. The parasite life cycle, including its survival outside the host is not completely known. Nevertheless, the infection can be directly transmitted by cohabitation between infected and non infected oysters suggesting that the parasite does not need intermediate host to complete its cycle. In the present study, the impact of temperature and salinity on the survival of purified parasites...
Tipo: Text
Palavras-chave: Effects; Temperarature; Salinity; Bonamia ostreae; Parasite; Pathology; Flat oyster; Ostrea edulis; Oyster.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/acte-3375.pdf

First record of the microsporidian parasite Steinhausia mytilovum in Mytilus sp (Bivalvia : Mytilidae) from France
Provedor de dados: 5
Autores: Comtet, Thierry; Garcia, Celine; Le Coguic, Yvette; Joly, Jean-pierre.
Steinhausia mytilovuln is a globally distributed microsporidian parasite which infects the oocytes of the blue mussels Mytilus edulis and M. galloprovincialis. Despite the intensive monitoring effort made on mussel populations, the parasite has not previously been reported in France. We report herein on the occurrence of S. mytilovum in Mytilus sp. from 1 cultured and 2 natural populations on the northern coast of France, thus extending the parasite's known distribution northwards. We also report on the observation in 1989 of S. mytilovum in M, galloprovincialis from the Golfe de Fos area in the Mediterranean Sea (South of France), S. mytilovum was observed in the European hybrid zone between M. edulis and M. galloprovincialis, which therefore renders the...
Tipo: Text
Palavras-chave: Aquaculture; Parasite; Microsporicha; Steinhausia mytilovum; Mytilus galloprovincialis; Mytilus edulis.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/publication-2862.pdf

Approche in vitro et in vivo des interactions hémocytes/parasite Bonamia ostreae, chez l'huître plate Ostrea edulis
Provedor de dados: 5
Autores: Denoix, Michael.
Depuis la fin des années soixante, la conchyliculture française doit faire face à des mortalités importantes d'huître plate, Ostrea edulis, causées entre autres, par le protozoaire, Bonamia ostreae, responsable de la bonamiose. Peu de moyens sont à l'heure actuelle à la disposition des professionnels pour lutter contre cette maladie. L'obtention d'animaux résistants à cette infection est une voie retenue et explorée par l'Ifremer pour combattre la bonamiose et tenter d'apporter des solutions aux conchyliculteurs. Dans cette optique, l'Ifremer, a entrepris un programme de sélection pour obtenir des animaux résistants en exerçant une pression de sélection par inoculation de parasites purifiés dans la cavité péricardique d'animaux anesthésiés. Les premières...
Tipo: Text
Palavras-chave: Huître plate; Ostrea edulis; Bonamia ostreae; Hemocyte; Parasite.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00033/14443/11742.pdf

Etude d'un lot de moules transférées dans un centre touché par l'épizootie affectant l'huître plate
Provedor de dados: 5
Autores: Tige, Gilbert; Rabouin, Marie-agnès.
L'examen de Mytilus edulis sur coupes histologiques révélant la présence de différents stade de Marteilia refringens, (Grizel et coll. 1974), nous avons essayé de vérifier si ce mollusque était un hôte accidentel ou non de Marteilia refringens. Pour cela, un lot de moules provenant d'une rivière non atteinte par l'épizootie, fut placé en élevage, de Novembre 1974 à Mars 1976, en rivière de Penzé, centre touché par la maladie. Au cours de l'essai, seul un faible pourcentage de moules se parasitait, le lot de moules restait de bonne qualité et les mortalités étaient minimes.
Tipo: Text
Palavras-chave: Mytilus edulis; Pathologie; Parasite; Marteilia refringens.
Ano: 1976
URL: http://archimer.ifremer.fr/doc/00015/12624/9509.pdf

Etude ultrastructurale d'une haplosporidie parasite de la palourde Tapes decussatus L.
Provedor de dados: 5
Autores: Joly, Jean-pierre; Comps, Michel.
The existence of a Haplosporidie parasite in the clam Tapes deucussatus has been demonstrated by Vilela (1950) with the description, based on classical histology observations, of a new species: Haplosporidium tapetis Vilela. Recently, the examination of the histological sections of the digestive glands of some clams from the Thau lagoon helped the scientists to find, in the stomachal epithelium, some forms comparable to the plasmodium of H. tapetis and to precise their ultrastructure.
Tipo: Text
Palavras-chave: Parasite; Haplosporidium; Pathologie; Tapes decussatus; Palourde.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/1979/acte-6080.PDF

Rapport sur l'activité de l'Institut Scientifique et Technique des Pêches Maritimes. Année 1967. (du 1er octobre 1966 au 31 décembre 1967)
Provedor de dados: 5
Autores: ISTPM.
Un bilan pour l'année 1967 montre que l'Institut poursuit à la fois sa croissance et sa mutation. Ce développement quantitatif et qualitatif apparaîtra dans chaque domaine (Océanographie et Pêches - Conchyliculture - Technologie et Contrôles)
Tipo: Text
Palavras-chave: Océanographie; Pêche; Conchyliculture; Parasite; Mortalité; Pollution eaux littorales; Rapport activité.
Ano: 1968
URL: http://archimer.ifremer.fr/doc/00134/24551/22584.pdf

Caractérisation moléculaire des parasites du genre Mycrocytos
Provedor de dados: 5
Autores: Moreau, Dimitri.
Les différentes productions ostréicoles mondiales sont à l'heure actuelle sérieusement mise à mal par différentes épizooties. Les responsables majeurs de ces maladies, sont des parasites protozoaires. Deux espèces sont responsables de la Bonamiose, une en Europe, Bonamia ostrea et une en Nouvelle Zélande et en Australie, Bonamia sp.. Deux autres parasites provoquent des maladies différentes : Mikrocytos roughleyi qui sévit en Australie et Micrkorcytos mackini au Canada. Ces quatre espèces infectant des zones différentes ne doivent en aucun cas venir coloniser des régions ou pays indemnes. C'est pourquoi il est important de pouvoir arriver à identifier leur présence chez un hôte le plus rapidement possible. Ces protozoaires étant assez proches...
Tipo: Text
Palavras-chave: Biologie moléculaire; Parasite; Mikrocytos roughleyi; Phylogénie.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/00032/14353/11637.pdf

Etude électrophorétique des protéines solubles du muscle et de l'hémolymphe de Crustacés Décapodes marins parasités par des Microsporidies (Protozoaires)
Provedor de dados: 5
Autores: Vivares, Christian P.; Ryckaert, Mireille; Ceccaldi, Hubert J.; Vago, Constantin.
La technique d'électrophorèse en gel de polyacrylamide a permis de noter de sensibles différences entre les électrophorégrammes des hémolymphes de Carcinus mediterraneus et de C. maenas, ainsi que des variations surtout au niveau des fractions de mobilité moyenne, et d'une fraction lente chez Processa edulis, entre les crustacés sains et ceux parasités par des Microsporidies
Tipo: Text
Palavras-chave: Technique électrophorèse; Hémolymphe; Carcinus mediterraneus; Carcinus maenas; Processa edulis; Crustacé; Parasite.
Ano: 1974
URL: http://archimer.ifremer.fr/doc/00141/25180/23286.pdf

Contribution à la biologie de la palourde Ruditapes decussatus L.
Provedor de dados: 5
Autores: Joly, Jean-pierre.
Cette étude traite de l'anatomie, la pathologie et la physiologie de la palourde Ruditapes decussatus L., mollusque bivalve fouisseur d'intérêt commercial.
Tipo: Text
Palavras-chave: Anatomie; Cytologie; Histologie; Bactérie; Parasite; Ruditapes decussatus.
Ano: 1982
URL: http://archimer.ifremer.fr/doc/00118/22937/20761.pdf

Bonamia ostreae (Pichot et Coll., 1979) parasite de l'huître plate : comparaison de deux méthodes de diagnostic
Provedor de dados: 5
Autores: Bachere, Evelyne; Durand, Jean-louis; Tige, Gilbert.
The parasite, Bonamia ostreae, was diagnosed in several South Brittany flat oyster's samples, from gills tissues's prints, stained in May-Grunwald-Giemsa and from corresponding digestive glands sections. The comparaison of results shows quantitative differences relating to the infested oyster's rate, and qualitative differences relating to the early stages of infestation. Gill's print technic seems more intersting for the only Bonamia ostreae diagnosis.
Tipo: Text
Palavras-chave: Pathologie; Parasite; Huître plate; Ostrea edulis; Bonamia ostreae.
Ano: 1982
URL: http://archimer.ifremer.fr/doc/1982/acte-5013.PDF

Culture in vitro de Bonamia ostreae parasite hémocytaire de l'huître plate Ostrea edulis L.
Provedor de dados: 5
Autores: Comps, Michel.
The development of Bonamia ostreae, a parasite responsible for an important disease in the flat oyster plate Ostrea edulis, has been achieved in vitro through the contamination of cultures of explanted oyster tissues. A description of the cultured parasite's cytological characteristics is provided.
Tipo: Text
Palavras-chave: Ostrea edulis; Huître plate; Parasite; Bonamia ostreae; Pathologie.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/publication-6156.PDF

Marqueurs microsatellites chez l'huître plate Ostrea edulis l. : caractérisation et applications à un programme de sélection pour une résistance au parasite Bonamia ostreae et à l'etude de populations naturelles
Provedor de dados: 5
Autores: Launey, Sophie.
The flat oyster Ostrea edulis L. is the indigenous oyster of the Atlantic as well as the Mediterranean coasts of Europe.  Its commercial exploitation dates back to Antiquity but its breeding is now threatened by two parasitic protozoa, among which Bonamia ostreae. Various aspects of the genetics of this species' natural and farmed populations have been studied with the aid of microsatellite markers.  At first, the implementation and the screening of two partial genomic libraries made it possible to identify 28 new microsatellite loci. Analysis of the segregation of 12 of these loci and of two enzymatic loci shows that most microsatellite loci are transmitted in a Mendelian way, but some loci have significant segregation distortions. Moreover, seven linkage...
Tipo: Text
Palavras-chave: Microsatellites markers; Parasite; Bonamia ostreae; Oyster; Ostrea edulis; Marqueurs microsatellites; Parasite; Bonamia ostreae; Huître; Ostrea edulis.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/1998/these-1919.pdf

Pipetman et bottes en caoutchouc à la recherche d'hôte(s) de Marteilia refringens
Provedor de dados: 5
Autores: Audemard, Corinne; Le Roux, Frédérique; Sauriau, Pierre-guy; Sautour, Benoît; Combes, C.; Coustau, C.; Blachier, Philippe; Berthe, Franck.
Over the last thirty years, the French production of flat oyster Ostrea edulis dropped from15,000 tons/year to 1,500 tons. Marteilia refringens, a parasite of the flat oyster's digestive gland, is partly responsible for this drop. The fight against this pathogen agent requires a better knowledge of its parasitic cycle. The main hypothesis is the existence of a heteroxenous cycle, that is to say a cycle involving more than one host. However, for thirty years this or these hosts have not been found, and the cycle of Marteilia refringens remains unknown.
Tipo: Text
Palavras-chave: Claires ostréicoles; Parasite; Détection; Biologie moléculaire; Marteilia refringens.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/acte-3272.pdf

Rapport sur l'activité du Laboratoire de La Tremblade - Année 1958
Provedor de dados: 5
Autores: Trochon, Pierre.
Rapport sur l'activité du Laboratoire ISTPM de La Tremblade concernant l'année 1958
Tipo: Text
Palavras-chave: Conchyliculture; Rapport d'activité; Météorologie; Parasite; Mortalité; Reproduction; Claire ostréicole; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1958
URL: http://archimer.ifremer.fr/doc/00069/18071/15615.pdf

Infection parasitaire causée par Marteilia maurini sp. n. chez la moule Mytilus galloprovincialis
Provedor de dados: 5
Autores: Comps, Michel; Grizel, Henri; Papayanni, Youla.
During the last year (1981), zoosanitaries control was practiced on the mussel Mytilus galloprovincialis from Venise lagoon. This species is infected by new parasite Marteilia maurini sp. n. His structurals characteristic and his development cycle are similar to those of Marteilia refringens in the fIat oyster.
Tipo: Text
Palavras-chave: Parasite; Pathologie; Marteilia maurini; Mytilus galloprovincialis.
Ano: 1982
URL: http://archimer.ifremer.fr/doc/1982/acte-3226.pdf

Sur un sporozoaire parasite de Crassotrea rhizophorae (Guilding)
Provedor de dados: 5
Autores: Comps, Michel; Grizel, Henri; Tige, Gilbert.
Along the French Guiana coast, mainly in the Monsinéry River, there are populations of natural oysters belonging to the species Crassostrea rhizophorae (Guilding). Within the scope of the growth of oyster farming in Guiana, we researched possible parasites of these oysters that are still little studied. This work, conducted based on living and set samples, allowed us to highlight the presence of nematops spores.
Tipo: Text
Palavras-chave: Guyane; Crassostrea rhizophorae; Parasite; Pathologie; Huîtres.
Ano: 1972
URL: http://archimer.ifremer.fr/doc/1972/publication-3008.pdf

Etude et optimisation des cultures cellulaires de Perkinsus olseni parasite de la palourde
Provedor de dados: 5
Autores: Guenn, Julien.
La conchyliculture connaît depuis une trentaine d'années une progression régulière de ses productions à travers le monde. Elle représente une activité économique importante avec plus de 240 000 tonnes de coquillage produit annuellement en France. Cependant le développement de cette activité peut être limité par des mortalités parfois massives dues à des maladies infectieuses. L'augmentation des productions peut être expliquée par l'amélioration des méthodes d'élevage grâce à une meilleure connaissance de la biologie des bivalves et des processus physiologiques liés à leur reproduction : l'apparition de l'élevage larvaire en écloserie a permis de pallier le caractère aléatoire et souvent insuffisant du captage naturel. Ces nouvelles techniques ont permis...
Tipo: Text
Palavras-chave: Biologie cellulaire; Parasite; Perkinsus olseni; Culture cellulaire; Palourde; Ruditapes decussatus; Ruditapes philippinarum.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/00033/14457/11759.pdf

Validation in commercial conditions of the response to selection of the European flat oyster Ostrea edulis for resistance to Bonamia ostreae
Provedor de dados: 5
Autores: Bedier, Edouard; Langlade, Aime; Angeri, Stéphane; Brizard, Raphael; Nerlovic, V.; Glize, Philippe; Haffray, Philippe.
Since the outbreaks of the parasitosis with Marteilia refringens and Bonamia ostreae in the last 60's, the French production of the European flat oyster dropped from 20000 mT to less than 1500 mT currently, leaving the French shellfish farming in situation of virtually monoculture of the Pacific cupped oyster Crassostrea gigas. To sustain this traditional culture, Ifremer has developed, at the experimental level, a genetic selection for a better tolerance to Bonamia ostreae which led to an improvement of survivals. The transfer of these results to the business scale requires the control of the reproduction in hatchery and the adaptation of the cycle of production to the constraints of seedlings in deep water as practised in Brittany (France). That's why a...
Tipo: Text
Palavras-chave: Selection; Genetic; Bonamia ostreae; Parasite; Ostrea edulis; Oyster.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/acte-3313.pdf

Que savons-nous des Marteillia?
Provedor de dados: 5
Autores: Berthe, Franck; Haffner, Philippe; Zerabib, Maamar; Rodriguez, David.
Marteilia refringens, a parasitic protist, is partially responsible for the drastic reduction in French production of the European flat oyster (Ostrea edulis) in the 1970s and still constitutes a major obstacle for revitalizing coastal farming of this species.
Tipo: Text
Palavras-chave: Bivalves; Ostrea edulis; Protiste; Parasite; Marteilia refringens; Pathologie.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/1997/acte-3247.pdf

Rapport sur l'activité du service du contrôle sanitaire des coquillages pendant l'année 1951 - La Tremblade
Provedor de dados: 5
Autores: Trochon, Pierre.
Rapport d'action du service du contrôle sanitaire des coquillages pendant l'année 1951 du Laboratoire ISTPM de La Tremblade
Tipo: Text
Palavras-chave: Contrôle sanitaire; Rapport d'activité; Ostréiculture; Reproduction; Parasite; Crassostrea angulata; Mytilus edulis; Ostrea edulis; Marennes Oléron.
Ano: 1951
URL: http://archimer.ifremer.fr/doc/00069/18062/15606.pdf

Modèle d'étude in vitro de Bonamia ostreae (Ascetospora), parasite intrahémocytaire d'Ostrea edulis. Etude d'intéractions cellulaires hôte-parasite
Provedor de dados: 5
Autores: Mourton, Chantal.
Oyster culture is, at a world scale, hit by variious epizooties, which are maintly caused by protozoans of the Phylum Ascetospora. Among them, Bonamia ostreae consitutes an appreciated model in order to study, at the cell scale, host-parasite relationships, as well as the immune role of hemocytes. Indeed, this parasite, which reproduces in hemocytes of Ostrea edulis, but cannot develop in Crassostea gigas. This development of an in vitro model for hemocyte-Bonamia relationships is presented. This includes the development and implementation of various techniques : making primocultures, protocol for infection with purified parasites, histological and immunoenzymatic analyses of infection. Such model allowed to study the interaction between host and...
Tipo: Text
Palavras-chave: Modèle; Histologie; Méthodologie; Primoculture; Ostrea edulis; Parasite; Hémocytes; Bonamia ostreae; Ascetospora; Protozoaire; Epizootie.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/1987/rapport-3234.pdf

Mise en évidence d'Haplosporidium sp. (Haplosporida - Haplosporidiidae) parasite de l'huître plate Ostrea edulis L.
Provedor de dados: 5
Autores: Bachere, Evelyne; Grizel, Henri.
A new Haplosporidie has been observed in the flat oyster Ostrea edulis from the Mediterranean Sea. Different development stages have been described in light and electron microscopy. The characteristics of the spores and especially the presence of at least four sporal filaments enable us to distinguish this Haplosporidie from those already described in the Atlantic flat oysters. Different haplosporidies have been described in the oyster. Some are known as being pathogenic, Minchinia costalis (Andrews et al., 1962 and 1978; Couch 1967) and Minchinia nelsoni (Haskin et al., 1966; Farley 1968 and 1975), others, identified only recently, are considered as occasional parasites (Van Banning, 1977). During the research conducted on Bonamia ostreae (Pichot et al.,...
Tipo: Text
Palavras-chave: Pathologie; Haplosporidium; Parasite; Ostrea edulis; Huître plate.
Ano: 1982
URL: http://archimer.ifremer.fr/doc/1982/publication-6576.PDF

Rapport sur l'activité du Laboratoire de La Tremblade - Biologie conchylicole - Année 1954
Provedor de dados: 5
Autores: Trochon, Pierre.
Rapport sur l'activité du Laboratoire ISTPM de La Tremblade, biologie conchylicole : année 1954
Tipo: Text
Palavras-chave: Conchyliculture; Rapport d'activité; Météorologie; Parasite; Mortalité; Reproduction; Claire ostréicole; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1954
URL: http://archimer.ifremer.fr/doc/00069/18066/15609.pdf

Rapport sur l'activité du Laboratoire de La Tremblade - Année 1957
Provedor de dados: 5
Autores: Trochon, Pierre.
Rapport sur l'activité du Laboratoire ISTPM de La Tremblade concernant l'année 1957
Tipo: Text
Palavras-chave: Conchyliculture; Rapport d'activité; Météorologie; Parasite; Mortalité; Reproduction; Claire ostréicole; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1957
URL: http://archimer.ifremer.fr/doc/00069/18069/15613.pdf

Mortalité du tourteau Cancer pagurus provoquée par le dinoflagelle parasite : Hematodinium sp.
Provedor de dados: 5
Autores: Latrouite, Daniel; Morizur, Yvon; Noel, Philippe; Chagot, Dominique; Wilhelm, G.
Unusural crab mortality in winter led us to identify a Hematodinium like parasitic dinoflagellate in the blood of edible crabs Cancer pagurus. Crabs from several fishing areas (the English Channel, the Iroise sea, the bay of Biscay, off Scotland) and from one area of the Channel shore were examined. The crab parasit was found everywhere we investigated and throughout the year. The prevalence which was found independant of the intermolt stage, sex and size of crabs was higher inshore than offshore. The pathogenicity is assumed to differ according to season.
Tipo: Text
Palavras-chave: Edible crab; Pathology; Bay of Biscay; Iroise sea; Channel; Parasite; Mortality; Hematodinium; Bitter crab desease; Dinoflagelle; Aquiculture; Cancer pagurus; Mortalité; Hematodinium; Cancer pagurus; Tourteau; Pathologie.
Ano: 1988
URL: http://archimer.ifremer.fr/doc/1988/acte-1418.pdf

Occurrence of Sporozoa-like microorganisms in the digestive gland of various species of Strombidae
Provedor de dados: 5
Autores: Volland, Jean-marie; Frenkiel, Liliane; Aldana Aranda, Dalila; Gros, Olivier.
The article discusses research on the presence of sporozoa-like microorganisms in the digestive gland of various species of Strombidae. One research by Gros, Frenkiel and Aldana Aranda described the digestive gland of Strombus gigas Linnaeus as having an assemblage of tubules and ducts. Another study found the occurrence of intracellular microorganisms believed to be the various life cycle stages of Apicomplexa.
Tipo: Text
Palavras-chave: Apicomplexa; Gastropoda; Parasite.
Ano: 2010
URL: https://archimer.ifremer.fr/doc/00207/31803/30218.pdf

Les maladies parasitaires et microbiennes des crustacés
Provedor de dados: 5
Autores: Leglise, Michel.
La présente conférence traite des maladies parasitaires et microbiennes des crustacés et essentiellement des crustacés commerciaux. Pour chacun des grands groupes de crustacés couramment commercialisés, nous passons en revue les maladies dues à des bactéries : bactéries chitinovores pour tous, Aeromonas pour le crabe Cancer pagurus, Gaffkya pour le homard ; à des protozoaires : ciliés (Ascophrys, Anophrys, par exemple), microsporidies et grégarines ; à des vers et enfin à d'autres crustacés. L'accent est mis sur la "Gaffkyose", maladie bactérienne du homard, qui a fait l'objet de nombreuses études tant sur le continent américain qu'en Europe.
Tipo: Text
Palavras-chave: Parasitologie; Parasite; Microbes; Microbiologie; Crutacés; Crustacea.
Ano: 1976
URL: http://archimer.ifremer.fr/doc/00013/12466/9302.pdf

Protiste parasite de l'huître du Pacifique Crassostrea gigas (Thumberg)
Provedor de dados: 5
Autores: Comps, Michel; Razet, Daniel; Quiroz-ramos, Hernando.
Following the "gill disease" of the Portuguese oyster (Crassostrea angulata LMK.) and the massive mortality rates that this species suffered in 1970 and 1971, the oyster farmers of the Marennes-Oléron basin, as those in other Portuguese oyster-producing areas, developed Pacific oyster (Crassostrea gigas) cultivation in France by directly importing spat from Japan's main supply centres.
Tipo: Text
Palavras-chave: Crassostrea gigas; Huîtres; Parasite; Protozoaire; Cytologie.
Ano: 1973
URL: http://archimer.ifremer.fr/doc/1973/publication-2984.pdf

La bonamiose un fléau de l'huître plate....
Provedor de dados: 5
Autores: Morga, Benjamin.
The history of French oyster culture shows very well how fragile this farming is to stock overexploitation and diseases. The production of flat oyster, Ostrea edulis, fell dramatically after the appearance of two parasitic diseases: arteiliosis and bonamiosis. The curative means against bonamiosis (Bonamia ostreae) are restricted and imply a good knowledge of the parasite's life cycle and of its interaction with its host. Studying the expression of the parasite's and the host's genes during the infection seems essential in providing new adapted measures in order to maintain, if not relaunch the flat oyster culture. In this context, this thesis aims to understand the flat oyster-parasite interactions, and especially, the molecular basis of the resistance to...
Tipo: Text
Palavras-chave: Biologie moléculaire; Gene; Parasite; Huîtres; Ostrea edulis.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/acte-3369.pdf

Flow cytometry to measure impact of temperature and salinity on the survival of Bonamia ostreae, parasite infecting flat oyster Ostrea edulis, in seawater
Provedor de dados: 5
Autores: Arzul, Isabelle; Bond, Celine; Gagnaire, Beatrice; Morga, Benjamin; Chollet, Bruno; Ferrand, Sylvie; Robert, Maeva; Renault, Tristan.
Bonamiosis due to the intrahaemocytic protistan parasite Bonamia ostreae is a European endemic disease affecting the flat oyster, Ostrea edulis. After its first description in June 1979&amp;#305; in Brittany, the parasite rapidly spread to all French oyster farming areas and in other European countries through transfers of live molluscs. The parasite has been described in different ecosystems from estuaries to open sea and no clear correlations could he demonstrated between the disease development and environmental parameters like temperature or salinity. The infection can he directly transmitted by cohabitation between infected and non infected oysters. Nevertheless, the parasite life cycle, including its survival outside the host, is not completely...
Tipo: Text
Palavras-chave: Impact; Salinity; Temperature; Flow cytometry; Bonamia ostreae; Parasite; Ostrea edulis; Oyster.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/acte-3372.pdf

Développement de protistes parasites en culture cellulaire de l'huître japonaise Crassostrea gigas
Provedor de dados: 5
Autores: Cousserans, François; Bonami, Jean-robert; Comps, Michel; Grizel, Henri.
Cell cultures, which are the basis of numerous recent studies in medical pathology, have been, for a few years, of great interest in the studies carried out on the diseases affecting invertebrates. However, such cultures, dealing with marine bivalve molluscs, obtained for the first time by Vago and Chastang (1) and progressively improved since then [(2) to (10)], have not been used in pathological studies yet. As the diseases affecting marine molluscs of economic importance such as oysters are both of great interest and facing specific study difficulties, we tried to adapt oyster cell cultures to the study of the presence, development and cycles of the pathogenic or possibly pathogenic microorganisms affecting Crassostrea, and especially the species gigas,...
Tipo: Text
Palavras-chave: Culture cellule; Parasite; Huîtres; Crassostrea gigas.
Ano: 1974
URL: http://archimer.ifremer.fr/doc/1974/publication-5907.PDF

Compléments d'observations sur le cycle du parasite, Marteilia refringens (Grizel et coll. 1974)
Provedor de dados: 5
Autores: Tige, Gilbert; Grizel, Henri; Langlade, Aime; Rabouin, Marie-agnès.
Les premiers stades connus du parasite ont été mis en évidence en Bretagne pendant les mois de juillet et d'août (GRIZEL et TIGE, 1977). Suite à ces observations, un essai a été réalisé en 1978 pour savoir si l'infestation avait bien lieu à ces dates ou si elle se faisait antérieurement sous une forme non décelée actuellement et subissant des transformations profondes dans les tissus de l'huître. Les résultats montrent que l'infestations se fait effectivement pendant l'été, à partir du mois de juillet jusqu'à la fin du mois d'août. Elle fut dans l'ensemble faible; les lots les plus infestés sont ceux qui ont séjourné le plus longtemps en zone contaminée.
Tipo: Text
Palavras-chave: Ostrea edulis; Marteilia refringens; Pathologie; Parasite.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/1979/acte-6098.PDF

The most vagile host as the main determinant of population connectivity in marine macroparasites
Provedor de dados: 5
Autores: Feis, Marieke E.; Thieltges, David W.; Olsen, Jeanine L.; De Montaudouin, Xavier; Jensen, K. Thomas; Bazairi, Hocein; Culloty, Sarah C.; Luttikhuizen, Pieternella C.
Although molecular ecology of macroparasites is still in its infancy, general patterns are beginning to emerge, e.g. that the most vagile host in a complex life cycle is the main determinant of the population genetic structure of their parasites. This insight stems from the observation that populations of parasites with only freshwater hosts are more structured than those with terrestrial or airborne hosts. Until now, the same has not been tested for marine systems, where, in theory, a fully marine life cycle might sustain high dispersal rates because of the absence of obvious physical barriers in the sea. Here, we tested whether a marine trematode parasite that utilises migratory birds exhibited weaker population genetic structure than those whose life...
Tipo: Text
Palavras-chave: Marine ecology; Population genetics; Parasite; Host parasite dynamics; Trematode; Invertebrates; Gymnophallus choledochus; Bucephalus minimus.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00375/48625/49417.pdf

Sur la présence d'Hexamita chez O. edulis et C. angulata des côtes françaises
Provedor de dados: 5
Autores: Marteil, Louis; Trochon, Pierre; Le Dantec, Jean; Moreau, Jean.
La présence d'Hexamita chez l'huître a été signalée par Certes dès 1892 mais son rôle dans l'étiologie de certaines maladies n'a été précisé qu'en 1952 par Mackin, Korringa et Hopkins. En Hollande, au Canada, aux U. S. A. ce protozoaire a été jugé responsable de mortalités importantes, survenant particulièrement dans les bassins de stockage, pendant l'hiver: une forte densité de peuplement, un renouvellement insuffisant de l'eau, une basse température étaient considérés comme des facteurs favorables au développement de ce flagellé.
Tipo: Text
Palavras-chave: Ostrea edulis; Crassostrea angulata; Hexamita; Parasite; Infestation.
Ano: 1962
URL: http://archimer.ifremer.fr/doc/00005/11583/8208.pdf

Parasitic infection of sole Solea solea by Prosorhynchus spp. metacercariae (Digenea, Bucephalidae) in Atlantic nurseries under mussel cultivation influence
Provedor de dados: 5
Autores: Laffargue, Pascal; Baudouin, G; Sasal, P; Arnaud, Christophe; Begout, Marie-laure; Lagardere, Francoise.
Cysts of metacercariae were obtained on 2 dates from juvenile sole Solea solea sea-sampled in an area of mussel cultivation (Pertuis Charentais, Bay of Biscay, France). An initial assessment of parasite genus and infestation level was based on 192 cysts extracted from 2 fish samples, taken in August (n = 20) and December 2000 (n = 14). Our results confirmed the sole as second intermediate host of bucephalid trematodes of the genus Prosorhynchus, which has not previously been noticed in Atlantic stocks. Prevalence, ca. 65% on both dates, indicated an substantial infestation of these small fish, with a mean abundance of parasites increasing from August (3.3 +/- 1.1) to December (8.1 +/- 3.4). Cysts were localised in all body parts of the host, and...
Tipo: Text
Palavras-chave: Flatfish; Soleidae; Parasite; Platyhelminthes; Bucephalidae; Nursery suitability.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/00000/10797/7576.pdf

Les Haplosporidies parasites de mollusques
Provedor de dados: 5
Autores: Ormieres, René; Grizel, Henri.
Haplosporidiae are of a great economic importance because of the diseases they sometimes determine in edible molluscs, especially in oysters. Haplosporidia diseases can lead to the death of the hosts.
Tipo: Text
Palavras-chave: Mollusques; Haplosporidia; Haplosporidies; Pathologie; Parasite; Parasitologie.
Ano: 1977
URL: http://archimer.ifremer.fr/doc/1977/acte-6174.PDF

The parasitic dinoflagellates Blastodinium spp. inhabiting the gut of marine, planktonic copepods: morphology, ecology, and unrecognized species diversity
Provedor de dados: 5
Autores: Skovgaard, Alf; Karpov, Sergey A.; Guillou, Laure.
Blastodinium is a genus of dinoflagellates that live as parasites in the gut of marine, planktonic copepods in theWorld’s oceans and coastal waters. The taxonomy, phylogeny, and physiology of the genus have only been explored to a limited degree and, based on recent investigations, we hypothesize that the morphological and genetic diversity within this genus may be considerably larger than presently recognized. To address these issues, we obtained 18S rDNA and ITS gene sequences for Blastodinium specimens of different geographical origins, including representatives of the type species. This genetic information was in some cases complemented with new morphological, ultrastructural, physiological, and ecological data. Because most current knowledge about...
Tipo: Text
Palavras-chave: Blastodinium; Copepod; Parasite; Symbiont; Plankton; Uttrastructure; Phylogeny.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00133/24407/22401.pdf

Essais de caractérisation moléculaire des parasites du genre Marteilia (Phylum Paramyxea) à l'aide de l'ADNr
Provedor de dados: 5
Autores: Rodriguez, David.
Les parasites du genre Marteilia sont responsables de graves épizooties et sont retrouvés dans une communauté très variable de mollusques bivalves marins. Toutefois ces protistes restent difficiles à classer à l'intérieur du genre du fait que les données morphologiques sont insuffisantes pour distinguer avec précision deux espèces données. Ceci est le cas pour Martilia refringens, affectant l'huître plate Ostrea edulis ou la moule (Mytilus edulis et Mytilus galloprovincialis), Marteilia sp. et Marteilia maurini affectant les deux espèces de moules. C'est pourquoi, nous avons tenté d'isoler, par PCR, le gène codant pour l'ARN 18S, les ITS1 et ITS2 ainsi que le gène codant pour l'ARN 5,8S des parasites présents chez l'huître plate et la moule (M. edulis),...
Tipo: Text
Palavras-chave: Parasite; Marteilia; PCR; Ostrea edulis; Mytilus edulis; Biologie moléculaire.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00032/14352/11636.pdf

Etudes sur la pathologie des huîtres
Provedor de dados: 5
Autores: Balouet, G.
French summary: In 1974, at the request of a group of oyster farmers in the Brittany region, the Pathology Laboratory of the U.E.R. Medicine of Brest undertook a series of theoretical and applied research projects concerning the problem of flat oyster digestive gland disease, due to Marteilia refringens, the primary economic problem of that time.  In 1978, in the research report of Contract C.N.E.X.O. 77/1690, the main results obtained since the beginning of the study of the parasitosis were made public. The present report has as its objective to show: - The results obtained in 1978-1979 while monitoring the parasitosis, and most especially the epidemiological evolution of the disease; - Information concerning the presence of other infectious diseases...
Tipo: Text
Palavras-chave: Parasite; Ostrea edulis; Oyster; Pathology.
Ano: 1978
URL: http://archimer.ifremer.fr/doc/1978/rapport-1927.pdf

Expériences de traitement des moules (M. edulis) de bouchots de la baie du mont saint-michel parasitées par mytilicola intestinalis - Septembre 1987 et 1988
Provedor de dados: 5
Autores: Blateau, Dominique.
Tipo: Text
Palavras-chave: Disease control; Parasite; Mussel rearing.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/rapport-1943.pdf

Bilan des connaissance et des enjeux relatifs aux ressources marines de l'estuaire de l'Odet
Provedor de dados: 5
Autores: Billy, Stéphany; Peronnet, Isabelle.
The estuary of the Odet, which can be defined as a ria, is an integral part of SAGE, taken on by SIVALODET. This space was hardly studied and it seemed important to perform a full assessment of knowledge and issues relating to this ria's fragile and unstable ecosystem. This assessment must be performed according to several points of focus; it must first of all strive to retrace the history of the fisheries in the Odet, then make it possible to identify as clearly as possible the marine habitats that make up this site. With that, it must then bring to light the potential resources of the estuary and finally resituate the Odet in relation to the other Breton estuaries.
Tipo: Text
Palavras-chave: Water quality; Shellfish farming; Parasite; Oysters; Bonamia ostrea; Marteilia refringens; Odet estuary; Brittany; Parasite; Huître; Qualité de l'eau; Habitats de l'Odet; Nourriceries de l'Odet; Marteilia refringens; Bonamia ostrea; Réglementation de la pêche; Estuaire de l'Odet; Bretagne.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/rapport-2334.pdf

Rapport sur l'activité du Laboratoire de La Tremblade - Année 1959
Provedor de dados: 5
Autores: Trochon, Pierre.
Rapport sur l'activité du Laboratoire ISTPM de La Tremblade concernant l'année 1959
Tipo: Text
Palavras-chave: Conchyliculture; Rapport d'activité; Météorologie; Parasite; Mortalité; Reproduction; Claire ostréicole; Crassostrea angulata; Ostrea edulis; Mytilus edulis; Marennes Oléron.
Ano: 1959
URL: http://archimer.ifremer.fr/doc/00069/18072/15616.pdf

Etude du cycle de Marteilia refringens dans l'Etang de Thau
Provedor de dados: 5
Autores: Comps, Michel.
Since the beginning of the epizooty of the flat oyster Ostrea edulis on the Atlantic coast (Comps, 1970), it has been observed that the parasitosis did not develop in the Mediterranean Sea in oysters from the Thau lagoon even though a large part of the culture is made up of young oysters from Brittany. However, some episodic studies only rarely found the presence of Marteilia refringens in the oysters from the lagoon.
Tipo: Text
Palavras-chave: Marteilia refringens; Ostrea edulis; Pathologie; Parasite.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/1979/acte-6078.PDF

Observations relatives à l'infestation de Crassostrea gigas Thunberg par le copépode parasite Mytilicola orientalis Mori dans le Bassin d'Arcachon
Provedor de dados: 5
Autores: His, Edouard.
Le copépode parasite Mytilicola orientalis Mori (1935) a été rencontré pour la première fois dans le tractus digestif des C. gigas du Bassin d'Arcachon en mars1977. Au printemps, les taux d'infestation variaient de 10 à 40% sur l'ensemble de la baie. Tous les individus de tous âges (y compris le naissain capté en 1976) sont infestés. Dans un cas particulier, l'infestation s'accompagne d'une diminution de l'index de condition. Les mortalités qui se manifestent actuellement sont-elles imputables à l'action du parasite? Certains sujets infestés abritent plus de 20 copépodes.
Tipo: Text
Palavras-chave: Crassostrea gigas; Copepode; Parasite; Mytilicola orientalis; Bassin Arcachon; Gironde.
Ano: 1977
URL: http://archimer.ifremer.fr/doc/00038/14949/12274.pdf

Etude d'un parasite de la glande digestive observé au cours de l'épizootie actuelle de l'huître plate
Provedor de dados: 5
Autores: Grizel, Henri; Comps, Michel; Cousserans, François; Bonami, Jean-robert; Vago, Constantin.
Description, in electron microscopy, of the stages of a parasite observed in the digestive gland of the oyster Ostrea edulis during the epizooties which are currently spreading throughout flat oyster farms.
Tipo: Text
Palavras-chave: Pathologie; Ostrea edulis; Huitre; Epizootie; Parasite.
Ano: 1974
URL: http://archimer.ifremer.fr/doc/1974/publication-5921.PDF

Situation zoosanitaire des coquillages en Méditerranée (1985-1987)
Provedor de dados: 5
Autores: Comps, Michel; Pichot, Yves.
A zoosanitary survey of the mussels and of the oysters from the mediterranean coast (Languedoc-Roussillon and Corse) has been carried out from 1985 unti11987. This period has been characterized by the stabilization of the enzootie infection caused by Marteilia maurini in the mussel Mytilus galloprovincialis and by the introduction of Bonamia ostreae in the laguna of Thau. New infections (with Rickettsia and Haplosporida) have been observed in the mus sels.
Tipo: Text
Palavras-chave: Zoosanitaire; Parasite; Lésion; Zoosanitary; Parasite; Lesion.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/00408/51928/52553.pdf

A comparative study of Ligophorus uruguayense and L. saladensis (Monogenea: Ancyrocephalidae) from Mugil liza (Teleostei: Mugilidae) in southern Brazil
Provedor de dados: 5
Autores: Marchiori, Natalia C.; Pariselle, Antoine; Pereira, Joaber, Jr.; Agnese, Jean-francois; Durand, Jean-dominique; Vanhove, Maarten P. M.
Representatives of Ligophorus Euzet et Suriano, 1977 were found on the gills of Mugil liza Valenciennes caught in southern Brazil. They were identified as Ligophorus uruguayense Failla Siquier et Ostrowski de Nufiez, 2009 and Ligophorus saladensis Marcotegui et Martorelli, 2009, even though specific identification proved to be difficult due to inconsistencies in some diagnostic features reported for these two species. Therefore, a combined morphological and molecular approach was used to critically review the validity of these species, by means of phase contrast and confocal fluorescence microscopical examination of sclerotised hard parts, and assessing the genetic divergence between L. saladensis, L. uruguayense and their congeners using rDNA sequences....
Tipo: Text
Palavras-chave: Morphology; Molecular systematics; Mullet; Parasite; Taxonomy.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00626/73847/73656.pdf

Parasitologie des mollusques
Provedor de dados: 5
Autores: Grizel, Henri.
Afin de mieux comprendre les problèmes de parasitologie des mollusques, il est nécessaire de donner un aperçu rapide sur : les principales espèces de mollusques réellement cultivées dans le monde, la naissance de la conchyliculture, le contexte de développement des recherches de parasitologie.
Tipo: Text
Palavras-chave: Parasitologie; Mollusques; Parasite; Marteilia refringens; Minchinia nelsoni.
Ano: 1976
URL: http://archimer.ifremer.fr/doc/00013/12465/9301.pdf

Flat oyster follows the apoptosis pathway to defend against the protozoan parasite Bonamia ostreae
Provedor de dados: 5
Autores: Gervais, Ophelie; Chollet, Bruno; Renault, Tristan; Arzul, Isabelle.
The in vitro model Ostrea edulis hemocyte - Bonamia ostreae is interesting to investigate host-parasite interactions at the cellular level. Indeed, this unicellular parasite infects the flat oyster Ostrea edulis and multiplies within hemocytes, the central effectors of oyster defenses. Apoptosis is a mechanism used by many organisms to eliminate infected cells. In order to study the potential involvement of this mechanism in the oyster response to B. ostreae, in vitro experiments were carried out by exposing hemocytes from the naturally susceptible oyster O. edulis and a resistant oyster species Crassostrea gigas to live and heat-inactivated parasites. Hemocyte apoptotic response was measured using a combination of flow cytometry and microscopy analyses....
Tipo: Text
Palavras-chave: Apoptosis; Host-parasite interactions; Parasite; Oyster; Bonamia ostreae; Ostrea edulis.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00346/45692/45312.pdf

Mytilicola orientalis Mori, Crassostrea gigas Thunberg's parasite, in the basin of Marennes Oleron : impact on the condition and the biochemical composition of oysters during rearing
Provedor de dados: 5
Autores: Deslous-paoli, Jean-marc.
Crassostrea gigas Thunberg's infestation by Mytilicola orientalis. Mori in 1979 in the basin of" Marennes-Oléron presents two maxima,  one during spring, the other during autumn. The parasites have infested until 64 %of bred oysters.. The intensity of infestation la weak (93.5 %of oysters are infested by lass than six females) and depend on the hosts'size. By this fact, slgnificant impact appears only in spring and in winter. A middle infestation of more than three M. orientalis females seems to induce a significant decrease of rates of carbohydrates and of glycogen
Tipo: Text
Palavras-chave: Infestation; Biochimical composition; Parasite; Crassostrea gigas; Mytilicola orientalis; Infestation; Biochimie; Parasite; Crassostrea gigas; Mytilicola orIentalis.
Ano: 1981
URL: http://archimer.ifremer.fr/doc/1981/acte-2938.pdf

Ultrastructure of the cuticle of the chalimus larva of the salmon louse Lepeophtheirus salmonis (Krøyer, 1837) (Copepoda: Caligidae)
Provedor de dados: 16
Autores: Bron, J.E.; Shinn, A.P.; Sommerville, C.
The cuticle of the chalimus II stage of Lepeophtheirus salmonis (Copepoda: Caligidae) comprised a four-layered epicuticle with a pronounced fuzzy coat which was separated from the outer and inner procuticles by a layer of transitional procuticle. The cuticle is underlain by a single-layered epidermis which overlies integumental glands and chromatophores. The structure of this cuticle is very similar to that described for free-living copepods and does not display the modifications associated with more highly transformed parasitic species.
Tipo: Article / Letter to the editor
Palavras-chave: Chalimus; Copepoda; Cuticle; Ultrastructure; Parasite.
Ano: 2000
URL: http://www.repository.naturalis.nl/record/534341

Moulting in the chalimus larva of the salmon louse Lepeophtheirus salmonis (Copepoda, Caligidae)
Provedor de dados: 16
Autores: Bron, J.E.; Shinn, A.P.; Sommerville, C.
The ultrastructure of moulting in the chalimus phase of the parasitic caligid copepod Lepeophtheirus salmonis is described for the first time. The major features of the moult sequence correspond to those of other Crustacea, save for the absence of a distinguishable intermoult as defined by reduced epidermal activity and a cessation of cuticle production. This latter may be explained cither in terms of a continuous moulting process related to the constant food supply available to a parasite or in terms of a highly abbreviated intermoult period. The findings are discussed with respect to studies of other Crustacean species.
Tipo: Article / Letter to the editor
Palavras-chave: Chalimus; Copepoda; Moult; Cuticle; Ultrastructure; Parasite.
Ano: 2000
URL: http://www.repository.naturalis.nl/record/534408

Amorphacarus Yezoensis spec. nov. (Acarina: Prostigmata: Myobiidae) from Sorex Unguiculatus (Mammalia: Insectivora: Soricidae)
Provedor de dados: 16
Autores: Lukoschus, F.S.; Ono, Z.-E.; Uchikawa, K.
Amorphacarus yezoensis spec. nov. parasitic on Sorex unguiculatus is described with developmental stages, and is compared to the related species A. elongatus, A. alpinus and A. soricis.
Tipo: Article / Letter to the editor
Palavras-chave: Amorphacarus yezoensis spec. nov.; Acarina; Sorex unguiculatus; Host; Parasite; 42.74; 42.84.
Ano: 1985
URL: http://www.repository.naturalis.nl/record/319064

Genetics and morphology of the genus Tritetrabdella (Hirudinea, Haemadipsidae) from the mountainous rain forests of Sabah, Borneo, reveal a new species with two new subspecies
Provedor de dados: 16
Autores: Kappes, H.
Blood-feeding terrestrial leeches of the family Haemadipsidae are a notorious part of the invertebrate diversity in Asian and Australian rain forests. All hitherto published records of terrestrial leeches of Borneo belong to the genus Haemadipsa. Here, a second, poorly known haemadipsid genus is reported from Mount Kinabalu and Crocker Range National Park. The individuals were barcoded and compared to sequences available in GenBank. The results show that the genus Tritetrabdella has representatives in the Indochinese and the Sundaic bioregions. All six specimens from Borneo are from a single new Tritetrabdella lineage, T. kinabaluensis spec. nov. Within the Bornean lineage, two groups differing 4-5% in the COI barcoding sequence were identified. Because 1)...
Tipo: Article / Letter to the editor
Palavras-chave: Annelida; Clitellata; Ecological specialization; Genetic distance; Parasite; Phylogeny; Speciation; Tropical mountains; 42.76; 42.64.
Ano: 2013
URL: http://www.repository.naturalis.nl/record/462900

Natural enemies of the chinch bug, Blissus antillus Leonard (Hemiptera: Lygaeidae: Blissinae), pasture pest in Rio de Janeiro state, Brazil
Provedor de dados: 82
Autores: CORACINI,DÉBORAH L.A.; SAMUELS,RICHARD I.
This study aimed to identify natural enemies of the chinch bug, Blissus antillus Leonard, which attacks Tanner grass (Brachiaria arrecta) and Tangola (hybrid of B. arrecta and B. angola), in poorly drained pastureland in the northern region of Rio de Janeiro State. Immature stages of a parasitic mite, identified as Leptus sp. (Parasitengona: Erythraeidae), were commonly found attacking nymphs and adult chinch bugs in all sampled areas of Rio de Janeiro State. An egg parasitoid, Eumicrosoma sp. (Hymenoptera: Scelionidae), was observed on only two occasions attacking eggs which had been collected on plant stems in the field. These natural enemies are possible candidates for biological control programs. Despite extensive sampling, B. antillus was not observed...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Insecta; Biological control; Brachiaria; Parasite; Parasitoid.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2002000100024

Ectoparasite occurrence associated with males and females of wild rodents Oligoryzomys flavescens (Waterhouse) and Akodon azarae (Fischer) (Rodentia: Cricetidae: Sigmodontinae) in the Punta Lara wetlands, Argentina
Provedor de dados: 82
Autores: Lareschi,Marcela.
The objective of this research was to study infestation parameters and indexes of ectoparasites associated with each sex of the wild rodents Oligoryzomys flavescens (Waterhouse) andAkodon azarae (Fischer) in the Punta Lara wetlands, Argentina. A trend towards higher mean abundance (MA) and ectoparasite specific richness was observed in males of O. flavescens whereas those values were similar for both A. azarae sexes. The prevalence of the following ectoparasites was significantly higher on males (P &lt; 0.05): Mysolaelaps microspinosus Fonseca (65.2%) and Hoplopleura travassosi Werneck (73.9%) on O. flavescens, and Ixodes loricatus Neumann (71.4%) on A. azarae. Only H. travassosi mean abundance was significantly higher on males (MA = 44.1). Since I....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chigger; Flea; Mite; Parasite; Sucking-lice; Tick.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000500022

Ecology and life history of an Amazon floodplain cichlid: the discus fish Symphysodon (Perciformes: Cichlidae)
Provedor de dados: 83
Autores: Crampton,William G. R.
The discus fishes of the genus Symphysodon are popular ornamental cichlids that occur in floodplain lakes and flooded forests of the lowland Amazon Basin. These habitats are characterized by extreme seasonal fluctuations in the availability of food, shelter and dissolved oxygen, and also the densities of predators and parasites. Most aspects of discus biology are influenced by these fluctuating conditions. This paper reports an autoecological study of the western Amazonian discus S. haraldi (until recently classified as S. aequifasciatus). This species feeds predominantly on algal periphyton, fine organic detritus, plant matter, and small aquatic invertebrates. At high water it forages alone or in small groups in flooded forests. At low water it forms...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flooded forest; Ornamental fishes; Parasite; Reproduction.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000400008

Reproduction of Pratylenchus zeae on Weeds
Provedor de dados: 87
Autores: BELLÉ,C.; KASPARY,T.E.; KUHN,P.R.; SCHMITT,J.; LIMA-MEDINA,I.
ABSTRACT Weeds can be hosts of root-lesion nematode (Pratylenchus spp.), maintaining or increasing their population in the soil. The objective of this study was to evaluate the reaction of 25 weeds species to the nematode Pratylenchus zeae. The weed plants were individually inoculated with 1,000 individuals of P. zeae and maintained in a greenhouse for 90 days. After this period, eggs and nematodes were extracted, quantified, and the reproduction factor (RF = final population/initial population) was calculated. All tested weeds were susceptible (RF&gt;1) to P. zeae, and the species Brachiaria decumbens, Rhynchelytrum repens, Digitaria insularis, D. horizontalis, B. brizantha were the most susceptible to this parasite.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Invasive plants; Susceptibility; Lesion nematode; Parasite.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100203

Host-parasite interaction and impact of mite infection on mosquito population
Provedor de dados: 92
Autores: Atwa,Atwa A.; Bilgrami,Anwar L.; Al-Saggaf,Ahmad I.M.
ABSTRACT During the present study, the host-parasite relationship between mosquitoes and parasitic mites was investigated. The 8954 individuals of male and female mosquitoes belonging to 26 genera: seven each of Aedes and Culex, six of Anopheles and one each of Toxorhynchites, Coquillettidia and Uranotaenia were collected from 200 sites. The male and female mosquitoes were collected from the State of Uttar Pradesh, located at 26.8500° N, 80.9100° E in North India by deploying Carbon dioxide-baited and gravid traps. The intensity of mite's infection, type and number of mites attached to mosquitoes, mite's preference for body parts and host sexes were the parameters used to determine host-parasite relationship. Eight species of mites: Arrenurus acuminatus,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mosquito; Mites; Host; Parasite; Infection; Biocontrol.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262017000200101

Myospila bekilyana (Séguy) (Diptera, Muscidae, Mydaeinae): redescription of male and female and description of terminalia
Provedor de dados: 92
Autores: Couri,Márcia S.
Myospila bekilyana Séguy (Diptera, Muscidae, Mydaeainae) is an endemic species from Madagascar. Since the original description, the species has been referred in literature only in catalogues. A material recently collected by the Madagascar Arthropod Biodiversity project, mostly deposited at the California Academy of Sciences collection enabled the exam of a large series of this species. Male and female are herein redescribed and the terminalia of both sexes are described and illustrated for the first time. The paper also records Myospila as a new host for Stylogaster Macquart (Diptera, Conopidae).
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Madagascar; Morphology; Parasite; Taxonomy.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262008000300003

Epithelial sentinels or protozoan parasites?: Studies on isolated rodlet cells on the 100th anniversary of an enigma
Provedor de dados: 97
Autores: SCHMACHTENBERG,OLIVER.
Rodlet cells are an unusual cell type found exclusively in teleost fishes. Their principal characteristics are a fibrous capsule and arrow or club-like structures pointing towards the apex of the cell, which are called rodlets. Rodlet cells were first described by Thelohan (1892) as undetermined sporozoan fish parasites, and soon after named Rhabdospora thelohani by Laguesse (1895). In 1906, a presently ongoing controversy started, with Plehn's independent characterization of rodlet cells as endogenous glandular cells, and a prompt refutation by Laguesse (1906). Both maintained their position, and during the following century both views continued to coexist with varying popularity, while additional interpretations of rodlet cell function were proposed....
Tipo: Journal article
Palavras-chave: Fish; Immune cell; Parasite; Rodlet cell; Teleosts.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2007000100005

แมลงศัตูธรรมชาติที่ใช้ประโยชน์บนดอยอ่างขาง
Provedor de dados: 106
Autores: Cherd Chooyoung.
Tipo: Collection
Palavras-chave: Predators; Parasite; Pathogens; Eocanthecona robusta; Coccinella septempunctata; Mallada basalis; Coenosia exigua; Diadegma semiclausum; Cotesia sp.; Aphidius sp.; แมลงตัวห้ำ; แมลงตัวเบียน; จุลินทรีย์; มวนพิฆาต; ด้วงเต่าเจ็ดจุด; แมลงช้างปีกใส; แมลงวันเสือ; แตนเบียนหนอนใยผัก; แตนเบียนหนอนกะหล่ำ; แตนเบียนเพลี้ยอ่อน; สถานีเกษตรหลวงอ่างขาง.
Ano: 2009
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5063

First natural infection by Ascocotyle (Phagicola) longa Ransom (Digenea, Heterophyidae) in an avian host, Ardea cocoi Linnaeus (Aves, Ciconiiformes, Ardeidae) in Brazil
Provedor de dados: 104
Autores: Barros,Luciano Antunes; Arruda,Vanessa Santos de; Gomes,Delir Corrêa; Pinto,Roberto Magalhães.
The first case of a natural avian infection caused by the digenetic trematode Ascocotyle (Phagicola) longa Ransom, 1920 in Brazil, is reported from the ardeid bird Ardea cocoi Linnaeus, 1766. This represents a new host record and data on clinical and pathological findings are also reported.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digenea; Ascocotyle (Phagicola) longa; Parasitic infection; Ardea cocoi; Birds; Pathology; Trematode; Parasite; Brazil.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000100013

Vanamea GEN. NOV. FOR Livoneca symmetricaVAN NAME,1925, (CRUSTACEA, ISOPODA, CYMOTHOIDAE) AND A REDESCRIPTION OF THE SPECIES BASED ON SPECIMENS FROM BRAZILIAN PIRANHAS
Provedor de dados: 36
Autores: THATCHER,Vernon E.
Studies of the cymothoid isopod Livoneca symmetricaVan Name, 1925, showed that this species has characters that preclude its inclusion in LivonecaLeach, 1818, or in any other known genus. The species is redescribed on the basis of male and female specimens from the mouth cavities of Amazonian piranhas (Serrasalmus spilopleura(Kner) and S. elongatusKner) and Vanameagen. nov. is proposed for it. The new genus is defined as having: a cephalon that is not immersed in pereonite 1; mandibles that are "foot-shaped" and without incisors, pereopods that are long and unequal in size and shape; a pleon that is not immersed in the pereon; and a pleotelson that is inflated anteriorly and medially.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Isopod; Cymothoid; Parasite; Piranha; Amazon.
Ano: 1993
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671993000300287

Anphira branchialis GEN. ET SP. NOV. (CRUSTACEA, ISOPODA, CYMOTHOIDAE) A GILL CAVITY PARASITE OF PIRANHAS (Serrasalmus SPP.) IN THE BRAZILIAN AMAZON
Provedor de dados: 36
Autores: THATCHER,Vernon E.
Anphira branchialisgen. et sp. nov. (Crustacea, Isopoda, Cymothoidae) is described from the dorsal areas of the gill chambers of three species of piranhas (Serrasalmusspp.). The fishes were caught in rivers near Manaus, Amazonas State and on Maracá island, Federal Territory of Roraima, Brasil. The new genus and species is characterized by having large, flat coxal plates on ail 7 pereonites. These plates usually extend beyond the margins of the following segments and the 7th ones extend nearly to the pleotelson and cover the lateral margins of the pleonites. The mandible of this species is rounded, "foot shaped" and without incisor. The mandibular palp is short and stout. The maxillules have 3 terminal and 2 subterminal spines. The pleopods are simple...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Isopod; Cymothoid; Parasite; Piranha; Amazon.
Ano: 1993
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671993000300297

Supplementary taxonomic description of Demidospermus pinirampi (Monogenoidea, Dactylogyridae), with a new host record and an expansion of its distribution range
Provedor de dados: 36
Autores: AGUIAR,Julio Cesar Cenci de; BUENO,Glauco Baptista Franco; SANTOS,Sonia Maria Cursino dos; ADRIANO,Edson Aparecido.
ABSTRACT During a survey conducted in the Lajeado Reservoir of the Tocantins River, in the state of Tocantins, Brazil, dactylogyrids were recovered from the gills of Pimelodina flavipinnis. Initial morphological analysis showed these dactylogyrids shared aspects of character with species of Demidospermus, with affinity to Demidospermus pinirampi, despite exhibiting differences with the original description by Kritsky et al. (1987) regarding the vagina, the base of the male copulatory organ and the shape and length of the bars. The analysis of the holotypes of D. pinirampi and its most morphologically close species, Demidospermus luckyi, revealed that these dactylogyrids were indeed D. pinirampi. This study therefore reports a new host and locality of...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: South America; Tocantins; Morphology; Parasite; Pimelodidae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000400355

FIRST RECORD OF Brachymeria podagrica (HYMENOPTERA: CHALCIDIDAE) AS PARASITOID OF Peckia collusor (DIPTERA: SARCOPHAGIDAE)
Provedor de dados: 37
Autores: RAMÍREZ-MORA,Manuel Alejandro; DURANGO-MANRIQUE,Yesica.
ABSTRACT In this work, the wasp Brachymeria podagrica is recorded for the first time for Colombia, a solitary parasitoid of larvae of the Peckia collusor fly. Third instar larvae of P. collusor were exposed to outdoor ambient conditions for 6 hours in the garden of the Tecnológico de Antioquia (Medellín, Colombia). 29 B. podagrica adults were obtained from the host pupae. Prevalence of parasitism was 14.5 %.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flesh flies; Natural enemy; Parasite.
Ano: 2021
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2021000300466

Ecological aspects of Langsdorffia hypogaea (Balanophoraceae) parasitism in the Pantanal wetlands
Provedor de dados: 39
Autores: Lehn,Carlos Rodrigo; Salis,Suzana Maria; Mattos,Patrícia Póvoa.
Most studies on holoparasitic plants have focused on taxonomic or systematic issues. The objective of this study was to examine the ecological aspects of parasitism of Langsdorffia hypogaea (Balanophoraceae) in the Pantanal wetlands. Individuals of L. hypogaea were dug out by hand and the host trees were identified. Eighty-eight percent of host trees exhibited zoochory dispersal syndrome. Protium heptaphyllum and Cordiera sessilis represented 50% of the sampled trees. Both species are evergreen and are preferentially shade-tolerant species growing under the canopy of other trees. Fecal sample of collared peccaries (Pecari tajacu) had seeds from both the host tree (Protium sp.) and the parasite L. hypogaea. We therefore propose the hypothesis that P. tajacu...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Host specificity; Pantanal; Parasite; Root; Savanna.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000400608

Infection by Austrodiplostomum compactum metacercariae in fish from the Nova Avanhandava reservoir, Tietê river, São Paulo State, Brazil - doi: 10.4025/actascibiolsci.v32i3.5675
Provedor de dados: 3
Autores: Paes, Jaciara Vanessa Krüger; Unesp - Campus de Botucatu; Carvalho, Edmir Daniel; Unesp - Campus de Botucatu; Silva, Reinaldo José; Unesp - Campus de Botucatu.
This study aimed to evaluate the infection by the Austrodiplostomum compactum metacercariae in fishes from the Nova Avanhandava Reservoir, low Tietê river, São Paulo State, Brazil. The parasites were collected from eye (aqueous and vitreous humor), fixed in AFA solution and stained with carmine. The morphometric analysis was performed using a computerized system for analysis of images QWin Lite 2.5 (Leica). Prevalence, mean intensity of infection and abundance of infected fish were calculated. Of the 22 species of fish registered, five were infected by metacercariae: Hoplias malabaricus, Metynnis maculatus, Plagioscion squamosissimus, Satanoperca pappaterra and Schizodon nasutus. Of the 627 fish evaluated, 34% were infected. A higher prevalence was...
Tipo: Níveis parasitários (abundância e intensidade média de infecção)
Palavras-chave: 2.13.00.00-3; 2.13.02.02-2 Diplostomidae; Trematode; New host; Eye; Parasite Parasitologia Diplostomidae; Trematode; New host; Eye; Parasite.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5675

Braga nasuta (Cymothoidae): an ectoparasite of the Giant Amazonian fish Arapaima gigas (Osteoglossidae) fingerlings cultured in the Amazon region in Northern Brazil
Provedor de dados: 3
Autores: Jesus, Elson Cardoso de; Cardoso, Lucas; Ferreira, Tamiris Henrique; Martins, Mauricio Laterça; Rodrigues, Marília Danyelle Nunes.
 Isopods Cymothoidae are organisms that parasitize several fish species, both marine and freshwater, provoking important physiological alterations and secondary infections. The genus Braga was proposed to harbor three species of parasitic isopods in freshwater fish from South America: B. brasiliensis, B. cichlae and B. nasuta. Posteriorly, other four species were included: B. patagonica, B. amapaensis, B. fluviatilis and B. bachmanni. Regarding the geographical distribution of the genus, there are registers in Brazil, Argentina, Suriname and Paraguay. In this study, 3,625 fingerlings of pirarucu Arapaima gigas were examined from a commercial fish farm in the Amazon region, Pará State, to observe and identify possible parasites. A total of eleven...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.13.00.00-3 Amazon; Pirarucu; Farming; Parasite; Isopoda. Parasita em peixes.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/35080

Metacercariae of Tylodelphys sp. (Trematoda: Diplostomidae) parasite of Brochis multiradiatus and Corydoras splendens (Siluriformes: Callichthyidae) from the Peruvian Amazon
Provedor de dados: 3
Autores: Morey, Germán Augusto Murrieta.
Corydoras splendens (Castelnau, 1855) and Brochis multiradiatus (Orcés V., 1960) are highly demanded for exporters in the Peruvian Amazon and importers all over the world.  The exportation of this fish species may represent a gateway for endoparasites to enter in a new environment with serious effects, so, the present study reports the presence of Tylodelphys sp. infecting C. splendens and B. multiradiatus. Fish were acquired from fishermen of the city of Iquitos, Peru. After the necropsy and analyses of the fish, metacercariae of Tylodelphys sp. were found in the liver and intestine. This finding represents the first report of Tylodelphys Diesing, 1850 infecting a fish in the Peruvian Amazon. Considering the possible damages caused by species of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Callichthyids; Digenean; Ornamental fish; Parasite.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/41280

A new species of Demidospermus Suriano, 1983 (Monogenea) parasite of gills of Auchenipterus osteomystax (Auchenipteridae), from the upper Paraná river floodplain, Brazil - DOI: 10.4025/actascibiolsci.v32i1.3368
Provedor de dados: 3
Autores: Tavernari, Fernando de Castro; UFRPE; Takemoto, Ricardo Massato; UEM; Lacerda, Ana Carolina Figueredo; UEM; Pavanelli, Gilberto Cézar; UEM.
A new species of Demidospermus Suriano, 1983 is described from the gills of Auchenipterus osteomystax Miranda-Ribeiro, 1918 (Auchenipteridae), collected in the upper Paraná river floodplain, Brazil. The gills were removed and preserved in 5% formalin. Later the parasites were removed from the gills with the aid of a stereomicroscope and conserved in 70% alcohol. Some specimens were stained with Gomori’s trichrome, dehydrated in absolute alcohol and cleared with faia creosote to observe the internal organs. Other specimens were mounted in Hoyer’s medium for the study of the sclerotized structures. The present study describes a new monogenetic species, Demidospermus osteomystax n. sp., characterized by: tandem gonads; V-shaped haptoral bars with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Auchenipterus osteomystax; Demidospermus; Parasite; Monogenea; Paraná river 2.13.00.00-3 Auchenipterus osteomystax; Demidospermus; Parasite; Monogenea; Paraná river Parasitologia.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/3368

Myenteric neuronal plasticity induced by Toxoplasma gondii (genotype III) on the duodenum of rats
Provedor de dados: 42
Autores: Papazian-Cabanas,Rodrigo M.; Araújo,Eduardo J.A.; Silva,Aristeu V. da; Sant'Ana,Débora M.G.
The effects of acute and chronic infection caused by Toxoplasma gondii on duodenal myenteric neurons were analyzed. Eighteen rats were assigned into four groups: Acute Control Group (ACG, n=4); Acute Experimental Group (AEG, n=4); Chronic Control Group (CCG, n=5); and Chronic Experimental Group (CEG, n=5). Rats from the AEG and CEG were inoculated orally with 105 genotype III (BTU-II strain) tachyzoites of T. gondii isolated from a dog with neurological signs. Acute groups were killed after 24 hours after the inoculation and the chronic groups after 30 days. Whole-mount from the duodenum were stained with Giemsa. The population density of myenteric neurons, as well the body cell, nuclear and cytoplasmic area were analyzed. Both acute and chronic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enteric nervous system; Infection; Parasite; Toxoplasmosis.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000300016

Feline heartworm (Dirofilaria immitis) infection: first case report of serological diagnosis in Brazil, confirmed by molecular assay
Provedor de dados: 42
Autores: PEREIRA,BARBARA B.; BASTOS,BETHÂNIA F.; KEIDEL,LUCAS; LELES,DANIELA; BRENER,BEATRIZ.
Abstract The clinical importance of heartworm infection in cats has indeed increased in recent years. Dirofilaria immitis infection has been reported worldwide in cats and continues to be regularly diagnosed in endemic areas. The diagnosis can be overlooked easily, especially in Brazil, where there is not a specific feline immunodiagnostic test, forcing the veterinarians to use a test made for the canine host. In 2015, a 10-year-old female neutered cat was diagnosed with D. immitis using an antigen serological test, based on imunocromatography and designed for dogs. The modified Knott test was negative. As the disease progressed, the cat showed clinical signals of respiratory distress, such as dyspnoea and polypnea in addition to prostration and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cat; Parasite; Dirofilariasis; Immunodiagnosis.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000502293

Protozoan parasites of Xiphophorus spp. (Poeciliidae) and their relation with water characteristics
Provedor de dados: 45
Autores: Garcia,F.; Fujimoto,R.Y.; Martins,M.L.; Moraes,F.R.
This work investigated the relationship between water characteristics and infestation of protozoan parasites, Icthyophthirius multifiliis and Trichodina sp., in swordtails (Xiphophorus helleri) and platy (Xiphophorus maculates) collected in an ornamental fish farm in São Paulo, Brazil. Fish were monthly collected from ponds and tanks for one year. The prevalence rates in fish from tanks and ponds were, respectively, 34.2% and 22.5% for I. multifiliis, and 13% and 54.2% for Trichodina sp. Increased electric conductivity and pH provoked reduction of I. multifiliis infestation. Low oxygen concentration increased Trichodina sp. infestation. The use of salt to increase the electric conductivity of water was a method to control I. multifiliis. Low dissolved...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Swordtails; Platy; Parasite; Protozoan; Trichodina sp.; Icthyophthirius multifiliis.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352009000100022

An anatomopathological study of hepatic coccidiosis (Calyptospora sp.) in the Acará-pixuna, Aequidens plagiozonatus Kullander, 1984 from the Brazilian state of Pará
Provedor de dados: 45
Autores: Videira,M.; Velasco,M.; Tortelly,R.; Menezes,R.C.; São Clemente,S.C.; Matos,E.
The present study focuses on the anatomopathological alterations provoked by parasitism by Calyptospora sp. in 40 specimens of Aequidens plagiozonatus collected in Pará, Brazil. Examinations of the fresh material by compression of the hepatopancreas and histological sections showed immature forms and oocysts characteristic of the genus Calyptospora, in addition to a large quantity of melanomacrophagic centers spread throughout the organ. No significant inflammation of the hepatic tissue was observed. The melanomacrophagic centers and the compression of the hepatocytes are part of the response of the host to the parasite. This study represents the first record of parasitism by Calyptospora in A. plagiozonatus.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish; Acará-pixuna; Parasite; Coccidio; Calyptospora; Pathology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100014

Parasite survey in mouse and rat colonies of Brazilian laboratory animal houses kept under differents sanitary barrier conditions
Provedor de dados: 45
Autores: Gilioli,R.; Andrade,L.A.G.; Passos,L.A.C.; Silva,F.A.; Rodrigues,D.M.; Guaraldo,A.M.A.
A parasitological study was undertaken to determine the health status of 15 mouse and 10 rat colonies bred in 18 Brazilian laboratory animal houses maintained under different sanitary barrier conditions which supply animals for teaching, research purposes and manufacture of biological products for medical or veterinary use. Parasitological methods were used for diagnosis of mites, lices, helminthes and protozoan parasites. A questionnaire was answered by institutions with the intention to obtain information about the existence of barriers against infections and of regular sanitary monitoring program of their colonies. The questionnaire data show that the majority of the animal houses investigated do not possess an efficient sanitary barrier system able to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rat; Mouse; Brazilian laboratory animal houses; Parasite; Sanitary barrier.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352000000100009

Perulernaea gamitanae (Copepoda: Lernaeidae) parasitizing tambaqui (Colossoma macropomum) (Characidae) and the hybrids tambacu and tambatinga, cultured in northern Brazil
Provedor de dados: 45
Autores: Tavares-Dias,M.; Neves,L.R.; Santos,E.F.; Dias,M.K.R.; Marinho,R.G. B.; Ono,E.A.
The infestation rate in Colossoma macropomum, hybrid tambacu (C. macropomum x Piaractus mesopotamicus) and hybrid tambatinga (C. macropomum x Piaractus brachypomum) with Perulernaea gamitanae Thatcher and Paredes, 1985 from two fish farms in Amapá State, Brazil was studied. Lernaeid parasites (n=2887) were collected mainly on the tongue and the mouth cavity and also on cartilage of gill arches and filaments. Inflammation and fibrous nodules were observed on the attachment sites of the parasites. The infestation rate varied according to the fish farm and host. The prevalence of P. gamitanae was of 100% in hosts from one fish farm and was lower in the other fish farm. Higher intensity of P. gamitanae occurred in hybrids tambacu and tambatinga, but despite...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Freshwater fish; Amazonia; Crustacean; Infestation; Parasite.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352011000400026

Sanitary profile in mice and rat colonies in laboratory animal houses in Minas Gerais: I - Endo and ectoparasites
Provedor de dados: 45
Autores: Bicalho,K.A.; Araújo,F.T.M.; Rocha,R.S.; Carvalho,O.S.
The sanitary conditions of 13 animal houses in nine public institutions in Minas Gerais, and the presence of endo and ectoparasites of mice and rats colonies kept in these facilities were evaluated. Data about barriers to prevent the transmission of diseases and a program of sanitary monitoring were obtained through a questionnaire and local visit. Parasitological methods were performed for diagnosing mite, lice, helminthes, and protozoa parasites in 344 mice and 111 rats. Data have shown that the majority of the animal houses had neither proper physical environment nor protection barriers to prevent the transmission of infections. Parasitological results have shown that only one animal house (7.7%) had parasite free animals, whereas the others have...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mice; Rat; Animal house; Parasite; Sanitary barrier.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000600020

Frequency of parasites and Salmonella infection in captive maned-wolf, Chrysocyon brachyurus, kept in Zoos at the State of São Paulo, Brazil
Provedor de dados: 45
Autores: Gilioli,R.; Silva,F.A.
Thirty-one captive maned wolves (Chrysocyon brachyurus, Illiger 1815) from 11 Zoos at the State of São Paulo, Brazil, were screened to investigate the presence of parasites and Salmonella infection by parasitological diagnostic methods and fecal selective culture. The most frequent ecto and endoparasites found were Ctenocephalides felis (56.2%), Rhipicephalus sanguineus (12.5%), Ancylostoma caninum (45.1%), Strongyloides sp. (29.0%), Uncinaria stenocephala (3.2%), Capillaria sp. (3.2%), Entamoeba sp. (22.9%), Sarcocystis sp. (29.0%), Cryptosporidium sp. (19.3%), Eimeria sp. (19.3%), Giardia sp. (9.6%) and Isospora sp. (3.2%). Four different serotypes of Salmonella were identified in six animals (25%). Only one infected animal showed clinical signs of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Maned-wolf; Chrysocyon brachyurus; Parasite; Salmonella spp.; Zoo.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352000000400008

New records of Forcipomyia (Pterobosca) incubans (Diptera: Ceratopogonidae) parasitizing wings of Odonata in Brazil
Provedor de dados: 49
Autores: Guillermo-Ferreira,Rhainer; Vilela,Diogo Silva.
Forcipomyia (Pterobosca) incubans Macfie (1937) (Diptera: Ceratopogonidae) is recorded here for the first time for Brazil. Females were collected in the Brazilian Neotropical Savanna parasitizing the wings of Erythrodiplax juliana Ris (1911), Erythrodiplax aff. anomala Brauer (1865) and Erythemis credula Hagen (1861), all Libellulidae dragonflies. A map of potential distribution of this species in the New World is also provided. The results suggest that its distribution may range from southern South America to Mexico, with higher densities in the Brazilian and Colombian Tropical Rain Forests.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biting midge; Flies; Parasite; New record; Neotropical.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100037

Olpidium gregarium, a chytrid fungus affecting rotifers populations in Rio Grande Reservoir, São Paulo State, Brazil
Provedor de dados: 49
Autores: Meirinho,Patrícia do Amaral; Nishimura,Paula Yuri; Pires-Zottarelli,Carmen Lidia Amorim; Mochini-Carlos,Viviane; Pompêo,Marcelo Luiz Martins.
A chytrid fungus Olpidium gregarium was found in Rio Grande Reservoir as rotifers populations' parasite. Along the reservoir central axis, the rotifers density decreased in the dam direction, while the density of affected rotifers by the chytrid fungus increased in the same direction. Moreover, some rotifers species were more affected than others, thus showing certain preference for some rotifers species. Thereby, this parasite may be interfering in the distribution of rotifers population in Rio Grande Reservoir. This is the first report of this species for Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Parasite; Chytridiomycota; Rotifera; Zones.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100036

Influence of the seasonal and environmental patterns and host reproduction on the metazoan parasites of Prochilodus lineatus
Provedor de dados: 52
Autores: Lizama,Maria de los Angeles Perez; Takemoto,Ricardo Massato; Pavanelli,Gilberto Cezar.
One hundred and forty-eight specimens of Prochilodus lineatus (Valenciennes, 1836) were collected on the Upper Paraná River floodplain, Brazil. Kritskyia boegeri presented significant differences in the abundance according to the host stage of gonadal maturity. Ergasilus sp. presented negative correlation between the GSR of the females and parasite abundance. K. boegeri presented negative correlation between the GSR of the males and abundance. Tereancistrum curimba and Saccocoelioides magnorchis occurred in higher abundance in the open lagoons. Rhinonastes pseudocapsaloideum and S. nanii presented higher abundance in the channels and Tylodelphis sp. presented higher abundance in the closed lagoons and in the rivers. K. boegeri and Amplexibranchius sp....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prochilodus lineatus; Parasite; Upper Paraná River floodplain; Brazil.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000500011

Involvement of nitric oxide and its up/down stream molecules in the immunity against parasitic infections
Provedor de dados: 55
Autores: Nahrevanian,Hossein.
Nitric oxide (NO) is a potent mediator with diverse roles in regulating cellular functions and signaling pathways. The NO synthase (NOS) enzyme family consists of three major isoforms, which convey variety of messages between cells, including signals for vasorelaxation, neurotransmission and cytotoxicity. This family of enzymes are generally classified as neuronal NOS (nNOS), endothelial NOS (eNOS) and inducible NOS (iNOS). Increased levels of NO are induced from iNOS during infection; while eNOS and nNOS may be produced at the baseline in normal conditions. An association of some key cytokines appears to be essential for NOS gene regulation in the immunity of infections. Accumulating evidence indicates that parasitic diseases are commonly associated with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: INOS; Nitric oxide; NO; Immunity; Helminth; Parasite; Protozoa.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702009000600010

Metazoan parasite of lambari  Astyanax altiparanae, collected from the Peixe river, São Paulo, southeast of Brazil
Provedor de dados: 65
Autores: Camargo,Aline de Almeida; Negrelli,Débora Caroline; Pedro,Natacha Heloísa Olavo; Azevedo,Rodney Kozlowiski de; Silva,Reinaldo José da; Abdallah,Vanessa Doro.
ABSTRACT: In March 2010, 44 specimens of Astyanax altiparanae Garutti &amp; Britski, 2000, commonly known as "lambari do rabo amarelo", collected from the Peixe river in the state of São Paulo, Brazil were analyzed. Out of these 44 fishes, 38 had at least one species of metazoan parasite. Fifteen metazoan parasites species were collected and identified: Urocleidoides trinidadensis , Diaphorocleidus kabatai ,  Diaphorocleidus orthodusus, Diaphorocleidus sp., Urocleidoides sp., Trinibaculum altiparanae , Gyrodactylus sp., Jainus hexops, Contracaecum sp., Procamallanus (Spirocamallanus) inopinatus, Vaigamus sp.,  Amplexibranchius bryconis, Ergasilus sp., Zonocotyloides haroltravassossi and Henneguya sp. Six species of parasites presented a prevalence of over...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Astyanax altiparanae; Lambari; Peixe river; Parasite; Brazil.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000500876

Hydrogen peroxide and chlorine dioxide against parasite Ichthyophthirius multifiliis (Protozoa, Ciliophora) in jundiá fingerlings
Provedor de dados: 65
Autores: Marchiori,Natalia da Costa; Silva,Fabiano Muller; Martins,Maurício Laterça; Amaral Junior,Hilton; Silva,Bruno Corrêa da.
ABSTRACT: Ichthyophthiriasis is a worldwide fish disease with great financial impact on freshwater fish farming due to its associated high mortality rates. Current study assesses the parasiticidal capacity of hydrogen peroxide (H2O2) and chlorine dioxide (ClO2) against the causative agent, Ichthyophthirius multifiliis, in jundiá. Median lethal concentration (LC50, 96h) of each chemical agent was established, as well as the minimum inhibitory concentration of hydrogen peroxide for the parasite´s infectious larval phase (theront). Products were tested asynchronously in parasitized fingerlings for short and long baths at the following concentrations and exposure times: 1. Hydrogen peroxide: (T1) continuous bath - 30ppm and (T2) 50ppm; (T3) short bath -...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: “ich”; Parasite; Rhamdia quelen drug; Treatment.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200501