Publication

2003-12

English

http://archimer.ifremer.fr/doc/2003/publication-386.pdf (0.12 Mo)

2003 International Council for the Exploration of the Sea. Published by Elsevier Science Ltd

Begout Marie-Laure, Coves Denis, Dutto Gilbert, Laffargue Pascal, Lagardere Francoise

IFREMER, CNRS, Ctr Rech Ecosyst Marins & Aquacoles, F-17137 Lhoumeau, France.
IFREMER, F-34250 Palavas Les Flots, France.

ICES Journal of Marine Science (1054-3139) (Elsevier), 2003-12 , Vol. 60 , N. 6 , P. 1328-1334

11

Aquaculture

Aquaculture, Telemetry, Marking techniques, Juvenile fish, Adaptation

The effects of tagging with acoustic transmitters on the growth of juvenile seabass, Dicentrarchus labrax (L.) (initial mean mass +/- SD, 173 g +/- 23.4) in a 47 d tank experiment, and sole. Solea solea (L.) ( 103.2 g +/- 14.8) in a 72 d tank experiment and (104.0 g +/- 18.4) in a 58 d salt marsh mesocosm experiment were examined. Twenty externally tagged seabass grew more slowly than the 20 with surgically implanted tags, which reached the same mass as nine control fish. Movements of the external transmitter's harness caused abrasions of the skin and loss of the tag in 60% of the cases. We thus recommend implanting transmitters for telemetry studies of juvenile seabass weighing between 120 and 214 g and carrying a tag that represents 2.2-2.5% of body mass. Both tank and mesocosm experiments conducted on juvenile sole concluded that the externally attached tag retention rate was good, but at the expense of the fish growth rate.