FN Archimer Export Format
PT J
TI Fish morphometric body condition indices reflect energy reserves but other physiological processes matter
BT 
AF Brosset, Pablo
   Averty, Alan
   MATHIEU-RESUGE, Margaux
   Schull, Quentin
   Soudant, Philippe
   Lebigre, Christophe
AS 1:4;2:4;3:1,2;4:3;5:5;6:1;
FF 1:;2:;3:;4:PDG-RBE-MARBEC-LHM;5:;6:PDG-RBE-HALGO-LBH;
C1 UMR DECOD (Ecosystem Dynamics and Sustainability), Ifremer, INRAE, L’Institut Agro, Brest, France
   Univ Brest, CNRS, IRD, Ifremer, UMR 6539, LEMAR, Plouzané, France
   MARBEC, Univ Montpellier, Ifremer, IRD, CNRS, Sète, France
   UMR DECOD (Ecosystem Dynamics and Sustainability), Ifremer, INRAE, L’Institut Agro, Brest, France
   Univ Brest, CNRS, IRD, Ifremer, UMR 6539, LEMAR, Plouzané, France
C2 IFREMER, FRANCE
   UBO, FRANCE
   IFREMER, FRANCE
   INST AGRO RENNES-ANGERS, FRANCE
   CNRS, FRANCE
SI BREST
   SETE
SE PDG-RBE-HALGO-LBH
   PDG-RBE-MARBEC-LHM
UM LEMAR
   MARBEC
   DECOD
IN WOS Ifremer UMR
   WOS Cotutelle UMR
   DOAJ
   copubli-france
   copubli-univ-france
IF 6.9
TC 1
UR https://archimer.ifremer.fr/doc/00851/96288/104539.pdf
   https://archimer.ifremer.fr/doc/00851/96288/104540.docx
LA English
DT Article
CR CGFS : CHANNEL GROUND FISH SURVEY
   EVHOE EVALUATION HALIEUTIQUE OUEST DE L'EUROPE
   PELMED - PELAGIQUES MEDITERRANÉE
DE ;Body condition;Ecophysiology;Cortisol;Fatty acids;Small pelagic;Sardine
AB Morphometric indices of body condition are assumed to reflect an animal’s health and ultimately its fitness, but their physiological significance remains a matter of debate. These indices are indeed usually considered as proxies of energy reserves, ignoring other physiological processes involved in animal health such as nutritional, immune and hormonal states. Given the wide variety of ecological processes investigated through morphometric body condition indices in marine sciences, there is a clear need to determine whether morphometric indices reflect primarily individuals’ energy reserves or their broader integrated physiological status. To address this issue, we used morphometric and physiological data (cortisol level, oxidative stress, digestive enzymes activity, and both fatty acids percentage and total amount) collected in three stocks of the European sardine (Sardina pilchardus) presenting contrasted patterns of growth and body condition. We found that morphometric body condition indices are indeed mainly and consistently linked to a proxy of the amount of lipid reserves (i.e., fatty acids amount), but also significantly to quality of lipid reserves (i.e., fatty acids percentage) and fish chronic stress (scale cortisol levels). We found no significant relationship between morphometric indices of body condition and both oxidative stress proxies and variables measuring digestive enzymes activity. Our study confirmed that morphometric body condition indices primarily reflect the variance in individuals’ lipid reserves and to a lesser extent the actual composition of these reserves (linked to differences in fish diet) and scale cortisol levels (indicating fish metabolism and/or their chronic stress levels). Therefore, some non-energetic aspects should be considered when studying individuals’ responses to environmental changes and other key physiological processes (oxidative stress proxies, activity of digestive enzymes) should be investigated directly to support scientific-based decision-making in the context of climate change. 
PY 2023
PD OCT
SO Ecological Indicators
SN 1470-160X
PU Elsevier BV
VL 154
UT 001079997400001
DI 10.1016/j.ecolind.2023.110860
ID 96288
ER

EF