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| Registros recuperados: 113 | |
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| 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 |
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| 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 |
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| 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 |
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| 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 & 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| Registros recuperados: 113 | |
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