Data/hora: 16/05/2024 11:24:02

Provedor de dados: | 5
País: | France
Título: | Contribution a l'étude de l'étrille Necora puber dans le Mor-Braz : données halieutiques, biologiques et pathologiques
Autores: | Wilhelm, Gwenaëlle.
Data: | 1995
Ano: | 1995
Palavras-chave: | Parasitic dinoflagellate; Hematodinium; Northern Biscay; South Brittany; Pathology; Reproduction; Growth; Fishing; Necora puber; Velvet swimming crab; Dinoflagellé parasite; Hematodinium; Nord Gascogne; Bretagne sud; Pathologie; Reproduction; Croissance; Pêche; Necora puber; Etrille.
Resumo: | The velvet swimming crab Necora puber, commonly found on the French coast was an important resource for inshore fishermen of the Mor-Braz sea in Southern Brittany before the production collapsed in 1985. Although there are still many uncertainties as to the reasons for this, we note that the collapse took place after a significant ecological imbalance which locally caused massive mortality of many marine organisms in 1982.  Without being obviously linked to the former point, mortality due to pathological causes was observed in velvet swimming crabs. Seeing the lack of general knowledge about these crabs, this study was designed to acquire data about its fishery and its biology. The first part focused on fleet, fishing effort and yield trends in the maritime districts of Vannes and Auray. The second part dealt with the species' life cycle, particularly its growth and reproduction. These elements were not sufficient to explain the collapse of the stock, so investigations turned towards seeking the pathogenic agent behind the mortalities: the third part focuses on a description of histology and ultrastructures and a biochemical and antigenic characterisation of the agent in question, the dinoflagellate Hematodinium sp.
Tipo: | Text
Idioma: | Francês
Identificador: | http://archimer.ifremer.fr/doc/1995/these-1197.pdf
Editor: | Université de Rennes 1
Relação: | http://archimer.ifremer.fr/doc/00000/1197/
Formato: | application/pdf