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Impact of Winter Mortalities On Post-Larval And Juvenile Stages, In Ruditapes Philippinarum From Western Brittany

Published online by Cambridge University Press:  11 May 2009

I. Calvez
Affiliation:
UMR CNRS 6539 BIOFLUX, Institut Universitaire Européen de la Mer, Place Nicolas Copernic, Technopôle Brest-Iroise, 29280 Plouzané, France
J. Guillou
Affiliation:
UMR CNRS 6539 BIOFLUX, Institut Universitaire Européen de la Mer, Place Nicolas Copernic, Technopôle Brest-Iroise, 29280 Plouzané, France

Extract

Introduced for aquaculture purposes, Ruditapes philippinarum has naturally recruited in several areas along the French Atlantic coast, and is subject to recurrent mortalities in late winter. The possible impact of these mortalities on both newly settled spat and juvenile R. philippinarum, was examined in a population from the Bay of Brest (western Brittany), in parallel with a survey of the main environmental parameters. From February to March 1994, 84% of the juvenile clams, between 1 and 2-y old, disappeared. No direct link could be made between these mortalities and the environmental parameters. Such winter mortalities were not observed in the newly settled spat.

Type
Short Communications
Copyright
Copyright © Marine Biological Association of the United Kingdom 1998

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