FN Archimer Export Format
PT J
TI Spatial distribution and activity patterns as welfare indicators in response to water quality changes in European sea bass, Dicentrarchus labrax
BT 
AF Alfonso, Sebastien
   Sadoul, Bastien
   Cousin, Xavier
   Bégout, Marie-Laure
AS 1:1,2;2:2,3;3:2,4;4:1,2;
FF 1:PDG-RBE-MARBEC-LAAAS;2:PDG-RBE-MARBEC-LAAAS;3:;4:PDG-RBE-MARBEC-LAAAS;
C1 Ifremer, Laboratoire Ressources Halieutiques, Station de La Rochelle, Place Gaby Coll, 17137 L'Houmeau, France
   MARBEC, Univ. Montpellier, CNRS, IRD, Ifremer, 34250 Palavas-les-flots, France
   INRAE, UR1037 Fish physiology and Genomics, 35000 Rennes, France
   Université Paris-Saclay, AgroParisTech, INRAE, GABI, 78350 Jouy-en-Josas, France
C2 IFREMER, FRANCE
   IFREMER, FRANCE
   INRAE, FRANCE
   UNIV PARIS SACLAY, FRANCE
SI PALAVAS
SE PDG-RBE-MARBEC-LAAAS
UM MARBEC
IN WOS Ifremer UMR
   copubli-france
   copubli-p187
   copubli-univ-france
IF 2.448
TC 27
UR https://archimer.ifremer.fr/doc/00612/72399/71344.pdf
LA English
DT Article
DE ;Fish;Welfare;Water quality;Behaviour;Stress
AB In aquaculture, fish are exposed to unavoidable stressors that can be detrimental for their health and welfare. However, welfare in farmed fish can be difficult to assess, and, so far, no standardized test has been universally accepted as a welfare indicator. This work contributes to the establishment of behavioural welfare indicators in a marine teleost in response to different water quality acute stressors. Groups of ten fish were exposed to high Total Ammonia Nitrogen concentration (High TAN, 18 mg.L-1), Hyperoxia (200 % O2 saturation), Hypoxia (20 % O2 saturation), or control water quality (100% O2 saturation and TAN < 2.5 mg.L-1) over 1 hour. Fish were then transferred in a novel environment for a group behaviour test under the same water quality conditions over 2 hours. Videos were recorded to assess thigmotaxis, activity and group cohesion. After this challenge, plasma cortisol concentration was measured in a subsample, while individual behavioural response was measured in the other fish using novel tank diving test. Prior to this study, the novel tank diving test was validated as a behavioural challenge indicative of anxiety state, by using nicotine as anxiolytic drug. Overall, all stress conditions induced a decrease in activity, thigmotaxis and group cohesion while only fish exposed to Hypoxia and High TAN conditions displayed elevated plasma cortisol concentrations. In post-stress condition, activity was still affected but normal behaviour was recovered within the 25 minutes of the test duration. Our work suggests that the activity, thigmotaxis and group cohesion are good behavioural indicators of exposure to degraded water quality, and could be used as standardized measures to assess fish welfare. 
PY 2020
PD MAY
SO Applied Animal Behaviour Science
SN 0168-1591
PU Elsevier BV
VL 226
UT 000531095400002
DI 10.1016/j.applanim.2020.104974
ID 72399
ER

EF