Recherche documentaire
Trier par :
-
Comps, Michel - 1978Until recently, the study of the pathology of oysters concerned some bacterial and a large number of parsitic diseases. Among the latter, diseases caused by fungi such as Labyrinthomyxa marina or by sporozoa such as Minchinia nelsoni in the American oyster have had very important econimic...Contributeur (s):
-
Comps, Michel / Duthoit, Jean-louis - 1976Some particles and viral damages linked to a strong cellular hypertrophy have been observed in the branchial necrosis of some Portuguese oysters contaminated by the Gill disease. The structure and development of the virions, as well as the cellular alteration, are studied by electron microscopy.Contributeur (s):
-
Bodoy, Alain / Garnier, Jacqueline / Geairon, Philippe / Chagot, Dominique / Grizel, Henri / Comps, Michel / Razet, Daniel - 1988Depuis le mois de juin 1988, les ostréiculteurs ont fait part de la présence de mortalités importantes sur le banc de Ronce (bassin de Marennes-Oléron), d'abord auprès de l'Ifremer et des Affaires Maritimes, puis des pouvoirs publics. Ces problèmes ont été évoqués lors d'une réunion...Contributeur (s):
-
Comps, Michel / Duthoit, Jean-louis - 1979Two viral infections associated to some epizooties have been observed in Crassostrea angulata Lmk. The first one concerns the Gill disease in which the viral damages go hand in hand with a cellular hypertrophy, while, in the second one, the contaminated cells are associated with a deterioration of...Contributeur (s):
-
Heral, Maurice / Bacher, Cedric / Razet, Daniel / Prou, Jean / Galgani, Francois / Renault, Tristan / Bodoy, Alain / Garnier, Jacqueline / Geairon, Philippe / Chagot, Dominique / Grizel, Henri / Comps, Michel / Masson, Daniel / Noinin, Michel - 1992Dès le 4 JUIN 1992, un ostréiculteur digne de confiance avait signalé aux services d'IFREMER, une situation anormale sur le banc de Ronce les Bains. Un premier prélèvement a été effectué le jour même. En effet, ce secteur avait déjà été le lieu de mortalités d'huitres estimées à 7 000...Contributeur (s):
-
Comps, Michel - 1976A yellowish mark of around 4 mm in diameter has been observed on the gill of a flat oyster from a batch in finishing process in a fattening pond (La Tremblade). With a magnifying glass, it has been described as a superficial necrosis of the gill. On the histological sections, we noticed that the...Contributeur (s):
-
Comps, Michel / Grizel, Henri / Papayanni, Youla - 1982During 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...Contributeur (s):
-
Comps, Michel / Razet, Daniel / Cousserans, Francois - 1980Contributeur (s):
-
Comps, Michel - 1969In the autumn of 1966, visible lesions were reported on the gills of Portuguese oysters raised in the Marennes-Oléron basin. Subsequently, various observers noted the presence of identical lesions on the oysters of Arcachon and the coasts of Brittany. A new oyster disease then appeared and with...Contributeur (s):
-
Comps, Michel / Razet, Daniel / Quiroz-ramos, Hernando - 1973Following 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 (...Contributeur (s):
-
Comps, Michel / Bonami, Jean-robert / Vago, C. / Razet, Daniel - 1976Among the major epizootics known in marine Molluscs, the one that started on the coasts of Europe in 1970 in the Portuguese oyster, Crassostrea angulata, was certainly one of the largest due to its range and due to the economic loss sustained by the French oyster farming as a whole. It led to the...Contributeur (s):
-
Comps, Michel - 1982Intracytoplasmic microcolonies of a new rickettsia were observed in epithelial cells of the digestive gland of Ruditapes philippinarum. The intracellular development includes several stages with peculiar structure. The systematic position of this procaryote is discussed.Contributeur (s):
-
Maurer, Daniele / Comps, Michel - 1986Previous pathological studies have not permitted to implicate infectious disease in summer mortalities of oysters Crassostrea gigas, in the Arcachon bay. In 1983, these summer mortalities, occurring mostly among 1 year old oysters, have been the subject of new investigations. In order to establish...Contributeur (s):
-
Comps, Michel - 1970Il a été observé au cours de l'automne 1969 que des huîtres plates (Ostrea edulis L.) élevées et affinées dans des claires du bassin de Marennes périssaient d'une façon anormale. Il s'agissait d'huîtres importées de Bretagne en avril 1969 : âgées de 2 ans, elles avaient séjourné...Contributeur (s):
-
Comps, Michel / Quiros-ramos, Hernando / Razet, Daniel - 1973A tumor of the mantle has been found in Crassostrea gigas coming from oyster-bed of Marennes-Oleron basin. Near the tumor, the shells show a malformation. Microscopic examination shows the connective nature of this tumor, it was covered with an epithelium and consisted of several sinuses filled...Contributeur (s):