FN Archimer Export Format
PT J
TI Effect of size grading on sea bass (Dicentrarchus labrax) juvenile self- feeding behaviour, social structure and culture performance
BT 
AF BENHAIM, David
   PEAN, Samuel
   BRISSET, Blandine
   LEGUAY, Didier
   BEGOUT, Marie-Laure
   CHATAIN, Beatrice
AS 1:1;2:2;3:2;4:2;5:2;6:3;
FF 1:PDG-RBE-HGS-LRHLR;2:;3:PDG-RBE-HGS-LRHLR;4:PDG-RBE-HGS-LRHLR;5:PDG-RBE-HGS-LRHLR;6:PDG-RBE-BOME-LALR;
C1 INTECHMER CNAM, LERMA, F-50103 Cherbourg, France.
   IFREMER, F-17137 Lhoumeau, France.
   IFREMER, Lab Rech Piscicole Mediterranee, Stn Expt Aquaculture, F-34250 Palavas Les Flots, France.
C2 INTECHMER CNAM, FRANCE
   IFREMER, FRANCE
   IFREMER, FRANCE
SI LA ROCHELLE
   PALAVAS
SE PDG-RBE-HGS-LRHLR
   PDG-RBE-BOME-LALR
IN WOS Ifremer jusqu'en 2018
   copubli-france
IF 1.152
TC 15
UR https://archimer.ifremer.fr/doc/00057/16858/14340.pdf
LA English
DT Article
DE ;Feeding behaviour;Self feeder;Triggering activity;Heterogeneity;Growth;Grading
AB This study aims to test the influence of size grading on self-feeding behaviour, social structure (measured by the percentage of triggering acts per individual), growth performances, and blood physiological variables of individually passive integrated transponder (PIT)-tagged sea bass juveniles, using a computerized on-demand feeding system coupled with a PIT tag monitoring device. Three consecutive periods of 27 days each were compared: a first period (P1) before grading (6 tanks of 100 fish; 40.2 +/- 8.9 g) followed by a second period (P2) after grading. The protocol applied aimed to create two groups of fish of similar mean weight but with either a low or a high coefficient of variation of weight (CV(w)) corresponding to an imposed difference in social disruption (T(low): CV(w) similar to 10%, 3 tanks of 60 fish each with social disruption; T(high): CV(w) similar to 20%, 3 tanks of 60 fish each, without social disruption). T(low) and T(high) groups were studied over P2, and an additional 27-day period under identical conditions (P3). The grading protocol used and/or time modified the social structure when comparing P1 and P2. Thereafter, during P2 and P3, no difference could be observed in growth performances, feed demand, or physiological variables between T(low) and T(high) groups. Feeding rhythms and social structures were similar in both groups. In conclusion, such grading practice only transiently modifies feed demand behaviour and social structure built around the self-feeder, without further improvement in individual growth performances in sea bass.
PY 2011
PD OCT
SO Aquatic Living Resources
SN 0990-7440
PU Edp Sciences S A
VL 24
IS 4
UT 000298634700006
BP 391
EP 402
DI 10.1051/alr/2011140
ID 16858
ER

EF