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| Registros recuperados: 113 | |
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| 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 |
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| 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 |
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| 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 |
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| 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 < 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| Registros recuperados: 113 | |
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