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