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Etude des effets de polluants sur les paramètres hémocytaires de l'huître creuse, Crassostrea gigas - Interactions entre environnement, mécanismes de défense et maladies infectieuses ArchiMer
Gagnaire, Beatrice.
Shellfish industry is mostly realized in estuary zones, which are subjected to pollutions due to anthropic activities. The harmful effects of pollutants on animals inhabiting these estuarine zones are poorly known. Among these animals, Pacific oyster, Crassostrea gigas, may represent a model because they are sedentary and they filter water intensively. Among all physiological functions possibly disturbed by pollutants, defence mechanisms are poorly studied in bivalves. Moreover, animals presenting impaired defence mechanisms may be more sensitive to infectious diseases. In this context, effects of pollutants on hemocyte functions and on sensitiveness to diseases were tested in C. gigas. After adjusting the protocols for the monitoring of hemocyte...
Tipo: Text Palavras-chave: Real time PCR; Flow cytometry; Pesticides; Pollutants; Phagocytosis; Hemocytes; Crassostrea gigas; Pacific oyster; Pathology; Immunotoxicology; PCR en temps réel; Cytométrie de flux; Pesticides; Polluants; Phagocytose; Hémocytes; Crassostrea gigas; Huître creuse; Pathologie; Immunotoxicologie.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/these-730.pdf
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Interactions entre traits de personnalité des téléostéens, environnement et polluants ArchiMer
Alfonso, Sebastien.
In the frame of this thesis, we first studied the establishment of personality in teleost, the consistency across context and different life stages as well as the associated physiological mechanisms. Personality appeared consistent across contexts over a short time period but it was no longer the case over a long period of time, especially between different life stages. Physiological mechanisms of stress regulation, as well as activity and neural plasticity, differed according to individual boldness. Then, we studied the physiological and behavioural responses of teleost fish chronically exposed to an environmentally relevant mixture of POP (PCBs and PBDEs), as well as those of their unexposed offspring. Different behavioural alterations in larval...
Tipo: Text Palavras-chave: Polluants; Comportement; Environnement; Stress; Polluants; Stress; Teleost fish; Environment.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00499/61019/64421.pdf
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Surveillance du milieu marin et protection sanitaire des coquillages (Acte) ArchiMer
Renault, Tristan.
Les mollusques sont à la base d'une activité économique importante au sein de l'Union Européenne, la France étant un des premiers pays producteurs. La conchyliculture doit répondre aujourd'hui aux attentes de la société en termes de sécurité alimentaire. Des réglementations ont ainsi été établies, tao! au niveau des étapes primaires de pêche, d'élevage ou de récolte des mollusques, que lors de la transformation et de la commercialisation. Au cours des étapes de production et de récolte, une contamination des coquillages (toxines algales, agents infectieux ou polluants) peut survenir du fait, notamment, des conditions environnementales auxquelles sont confrontés les animaux. Des réseaux de surveillance ont ainsi été développés afin de détecter la présence...
Tipo: Text Palavras-chave: Polluants; Contamination microbiologique; Algues toxiques; Coquillages; Milieu marin; Réseaux; Surveillance.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/acte-6933.pdf
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Surveillance du milieu marin et protection santiaire des coquillages ArchiMer
Renault, Tristan.
Shellfish farming is a major economic activity in the European Union, France being one of the main producing countries. Regulations were introduced to meet society's current expectations in terms of food safety at the fishing, farming and harvesting stages, as weil as during processing and marketing. Toxic algae, pathogens or pollutants may contaminate shellfish products during production and harvesting, partly because of the particular environ mental conditions in which these animais are grown. Monitoring programmes were thus deve/oped to detect the presence of biological and chemical contaminants in coastal waters and in shellfish, and to monitor the food safety of the latter.
Tipo: Text Palavras-chave: Pollutants; Microbiological contamination; Toxic algae; Shellfish; Marine environment; Programmees; Monitoring; Polluants; Contamination microbiologique; Algues toxiques; Coquillages; Milieu marin; Réseaux; Surveillance.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6932.pdf
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