FN Archimer Export Format
PT J
TI Global assessment of the response to chronic stress in European sea bass
BT 
AF Sadoul, Bastien
   Alfonso, Sebastien
   Cousin, Xavier
   Prunet, P.
   Bégout, Marie-Laure
   Leguen, I.
AS 1:1,2;2:1,3;3:1,4,6;4:5;5:1;6:1,6;
FF 1:PDG-RBE-MARBEC-LAAAS;2:PDG-RBE-MARBEC-LAAAS;3:;4:;5:PDG-RBE-MARBEC-LAAAS;6:;
C1 MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Palavas, France
   ESE, Ecology and Ecosystem Health, Institut Agro, INRAE, Rennes Cedex, France
   COISPA Tecnologia & Ricerca, Stazione Sperimentale per lo Studio delle Risorse del Mare, Bari, Italy
   AgroParisTech, INRAE, Université Paris-Saclay, GABI, 78350, Jouy-en-Josas, France
   INRAE, UR1037 LPGP, Fish Physiology and Genomics, Campus de Beaulieu, 35000 Rennes, France
   MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Palavas, France
C2 IFREMER, FRANCE
   INRAE, FRANCE
   COISPA TECNOL & RIC, ITALY
   INRAE, FRANCE
   INRAE, FRANCE
   INRAE, FRANCE
SI PALAVAS
SE PDG-RBE-MARBEC-LAAAS
UM MARBEC
IN WOS Ifremer UMR
   WOS Cotutelle UMR
   copubli-france
   copubli-p187
   copubli-europe
IF 5.135
TC 15
UR https://archimer.ifremer.fr/doc/00701/81328/85696.pdf
LA English
DT Article
DE ;Welfare;Plasticity;Fish;Osmoregulation;Robustness;Resilience
AB Stress modifies energy allocation in fishes by redirecting energy from growth and reproduction to coping mechanisms. However, these adjustments become inappropriate when the challenge consists of sustained or repeated stressors, with the animal entering a maladaptive state. Capacities to cope with additional threats are then altered and compromise survival. The characterization of the responses to chronic stress in fishes helps better understanding the physiological limits in an aquaculture or ecological context. Here, we investigate the coping capacities of European sea bass to multiple and diverse stressors applied over a 3-weeks period. Multiple behavioural (group dispersion and swimming activity) and physiological responses (blood cortisol, osmoregulatory mechanisms, stress-related gene expression, etc.) were evaluated in resting fish or in fish exposed to additional challenges. Resilience to the chronic stress protocol was evaluated 4 months after the end of the chronic stress. Chronically stressed individuals showed reduced growth, lower cortisol response, increased chloride and sodium concentration in the plasma and modified gill gene expression translating osmoregulatory dysfunctions. Chronic stress had no significant effect on plasmatic calcium, lysozyme concentration and osmotic pressure. Increased thigmotaxic behaviour was observed in a new environment behavioural test. Four months after the chronic stress, no significant difference was observed in growth performances and in plasma parameters. Altogether, gills and more generally osmoregulatory functions were found to be the most sensitive to the chronic stress, while only limited changes in growth, activity of the HPI axis, immunity and swimming behaviour were observed when assessed individually. This work demonstrates the necessity of using multiple and diverse endpoints related to different functions to properly assess health and welfare in fishes. 
PY 2021
PD NOV
SO Aquaculture
SN 0044-8486
PU Elsevier BV
VL 544
UT 000685115800006
DI 10.1016/j.aquaculture.2021.737072
ID 81328
ER

EF