FN Archimer Export Format
PT J
TI Effect of fasting on self-feeding activity in juvenile sea bass (Dicentrarchus labrax)
BT 
AF BENHAIM, David
   BEGOUT, Marie-Laure
   PEAN, Samuel
   BRISSET, Blandine
   LEGUAY, Didier
   CHATAIN, Beatrice
AS 1:1;2:2;3:2;4:2;5:2;6:3;
FF 1:;2:PDG-RBE-HGS-LRHLR;3:;4:PDG-RBE-HM-RHSETE;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
   SETE
   PALAVAS
SE PDG-RBE-HGS-LRHLR
   PDG-RBE-HM-RHSETE
   PDG-RBE-BOME-LALR
IN WOS Ifremer jusqu'en 2018
   copubli-france
IF 1.5
TC 14
UR https://archimer.ifremer.fr/doc/00069/18004/15672.pdf
LA English
DT Article
DE ;Personality;Plasticity;Feeding-behaviour;Self-feeder;Social structure
AB In various experiments under self-feeding conditions, sea bass groups could be divided into three categories regarding feeder actuation: high, low and zero-triggering fish. In all cases few high-triggering fish were responsible for a high percentage of the feed delivery. A question was raised about the role played by feeding motivation in such high-triggering status acquisition. It was approached by applying a 3-week fasting period in order to induce similar negative specific growth rate (SGR) in two groups of fish of similar mean weight but with either a low or a high coefficient of variation for weight (CVw)(T-low: CVw similar to 11%, 3 tanks of 60 fish each; T-high: CVw similar to 20%, 3 tanks of 60 fish each). These groups were created to test the consistency of behavioural responses in two different contexts (i.e. two population size-distributions). During the follow-up period of 40 days, the group level feed-demand behaviour was not strongly modified by the fasting period and there were no differences between T-low and T-high groups. Complete growth compensation was the same in all tanks as observed at the end of the experiment. At the individual level, high-triggering fish were exactly the same individuals before and after the fasting period. Up to four high-triggering fish could be observed according to the tank and when several fish were performing high-triggering activity, their rankings were sometimes reversed after the fasting period. High-triggering fish increased their activity levels after the fasting period showing behavioural plasticity. High-triggering status could neither be explained by an initial lower SGR nor a sex effect, nor by any of the measured physiological blood parameters. Thus, individual's triggering activity levels could be related to personality and/or metabolic traits but further research is required to confirm this assumption. (C) 2011 Elsevier B.V. All rights reserved.
PY 2012
PD JAN
SO Applied Animal Behaviour Science
SN 0168-1591
PU Elsevier Science Bv
VL 136
IS 1
UT 000300071600009
BP 63
EP 73
DI 10.1016/j.applanim.2011.11.010
ID 18004
ER

EF