A nondestructive tool for the measurement of muscle strength in juvenile oysters Crassostrea gigas

A new tool, designed to measure the adductor muscle strength in juvenile oysters, is described. This instrument has been applied for the evaluation of muscle strength ( F) in relation to dry weight of shell-free oysters, longitudinal (d1) and transversal (d2) diameters, and to sizes of the opaque (...

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Bibliographic Details
Published in:Aquaculture 2003-03, Vol.217 (1), p.49-60
Main Authors: Poulet, Serge A, Lennon, Jean-François, Plouvenez, Frédéric, Jalabert, Fabienne, Correc, Gaelle, Cueff, Anne, Lacoste, Arnaud
Format: Article
Language:English
Subjects:
Animal aquaculture
Animal productions
Aquaculture
Biological and medical sciences
Crassostrea gigas
Fundamental and applied biological sciences. Psychology
Invertebrate aquaculture
Juvenile oyster
Marine
Mollusca
Muscle diagnostic
Oysters
Summer mortality
Weight
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Summary:A new tool, designed to measure the adductor muscle strength in juvenile oysters, is described. This instrument has been applied for the evaluation of muscle strength ( F) in relation to dry weight of shell-free oysters, longitudinal (d1) and transversal (d2) diameters, and to sizes of the opaque ( O) and translucent ( t) portions of the adductor. Our results have established a link between summer mortality and correlation coefficient computed between ( F) and dry weight values in juvenile oysters. The regression between ( F) and dry weight values was linear in healthy oyster samples. It was not linear, or correlation coefficient was less significant, in samples presenting high mortality. During a 3-year survey in the Bay of Morlaix, France, >40 different stocks of oysters were tested with this tool, used for the diagnosis of healthy, resistant juveniles and recognition of weak specimens.
ISSN:0044-8486
1873-5622
DOI:10.1016/S0044-8486(02)00495-7