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Analysis Of Condition and Swimming Performance in Juveniles of White Sea Bream, Diplodus Vulgaris

Published online by Cambridge University Press:  11 May 2009

S. Planes ,
O. Hertel  and
J.-Y. Jouvenel
S. Planes
Affiliation:
Ecole Pratique des Hautes Etudes - URA CNRS 1453, Laboratoire d'Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 66860 Perpignan Cedex, France
O. Hertel
Affiliation:
Ecole Pratique des Hautes Etudes - URA CNRS 1453, Laboratoire d'Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 66860 Perpignan Cedex, France
J.-Y. Jouvenel
Affiliation:
Ecole Pratique des Hautes Etudes - URA CNRS 1453, Laboratoire d'Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 66860 Perpignan Cedex, France
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Extract

A pilot study was conducted to follow condition and swimming performances over two months using three samples of 50 juveniles of white sea bream, Diplodus vulgaris. The initial result indicated that the weight-length relationship followed the model; W=5.2xl0-3L349. According to this relationship, condition indices were estimated for each individual as the observed weight related to the computed weight. Measures of swimming velocities realized in an artificial flume show variations through time with an increase and decrease directly correlated to condition indices. Maximum speed of an individual was measured at 12.3 cm s1. Analysis of environmental conditions indicated that the decrease of condition index and swimming performances was related to bad weather which induced turbid water in juvenile habitats.

Type
Short Communications
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 77 , Issue 3 , August 1997 , pp. 913 - 916
Copyright
Copyright © Marine Biological Association of the United Kingdom 1997

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