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Biologie et exploitation de l'araignée de mer Maja squinado Herbst en Manche Ouest ArchiMer
Le Foll, Didier.
The aim of this work, which was done as a Doctorate of Philosophy (Phd), was to collect the information necessary to help improve the management of the western Channel spider crab stock. The fîrst section présents the main aspects of spider crab population biology. As well as contributing our own results on spider crab habitat, stock density, démographie structure, growth and mortality estimâtes, migrations, reproduction and recruitment, a synthesis is included of the existing scientific literature. The second section on exploitation covers various features of the fishery : its history, fishing methods, fleet structure, spatial and seasonal distribution of fishing efforts in 1986, trends in the landings, fishing effort and catch per unit effort,...
Tipo: Text Palavras-chave: Exploitation; Biologie; Manche; Maja squinado; Araignée; Exploitation; Biology; English Channel; Maja squinado; Spider crab.
Ano: 1993 URL: https://archimer.ifremer.fr/doc/1993/rapport-638.pdf
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Relations biométriques chez l'araignée de mer Maja squinado : longueur de référence, distinction juvénile-adulte, taille-poids. ArchiMer
Le Foll, Didier; Latrouite, Daniel; Noel, Philippe.
For the analysis of spider crab populations it is necessary to split the size composition by sex and between age groups, and to convert length to weight. In some cases different length measurements need to be correlated in order to compare the results from different authors. Morphometricaly it is easy to use the abdominal flap to distinguish between male and female, and between immature and adult females, but for immature and adult males it is necessary to use Somertons method to analyse the relation between carapace length and claw width. The relation between carapace length and weight is normally established at moult stage 4, and it obtained separately for males, females, immature and adults spider crabs. When measuring carapace length the present length...
Tipo: Text Palavras-chave: Adult; Biometry; Western Channel; Juvenile; Biology; Maja brachydactyla; Spider crab; Adulte; Juvénile; Manche; Maja brachydactyla; Biométrie; Araignée.
Ano: 1993 URL: http://archimer.ifremer.fr/doc/1993/acte-1410.pdf
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