FN Archimer Export Format
PT J
TI Is starvation a cause of overmortality of the Mediterranean sardine?
BT 
AF Queiros, Quentin
   Saraux, Claire
   Dutto, Gilbert
   Gasset, Eric
   Marguerite, Amandine
   Brosset, Pablo
   Fromentin, Jean-Marc
   McKenzie, David
AS 1:1;2:1,2;3:3;4:3;5:1,3;6:4,5;7:1;8:6;
FF 1:;2:PDG-RBE-MARBEC-LHM;3:PDG-RBE-MARBEC-LSEA;4:PDG-RBE-MARBEC-LAAAS;5:;6:;7:PDG-RBE-MARBEC;8:;
C1 MARBEC, Univ Montpellier, CNRS, IFREMER, IRD, Sète, France
   IPHC UMR 7178, University of Strasbourg, CNRS, DEPE, 67000 Strasbourg, France
   MARBEC, Univ Montpellier, CNRS, IFREMER, IRD, Palavas-Les-Flots, France
   Ifremer, Laboratoire de Biologie Halieutique, ZI Pointe du Diable, CS 10070, 29 280 Plouzané, France
   Université de Brest - UMR 6539 CNRS/UBO/IRD/Ifremer, Laboratoire des sciences de l'environnement marin – IUEM, Rue Dumont D'Urville, 29280 Plouzané, France
   MARBEC, Univ Montpellier, CNRS, IFREMER, IRD, Montpellier, France
C2 IFREMER, FRANCE
   UNIV STRASBOURG, FRANCE
   IFREMER, FRANCE
   IFREMER, FRANCE
   UBO, FRANCE
   UNIV MONTPELLIER, FRANCE
SI SETE
   PALAVAS
   BREST
SE PDG-RBE-MARBEC-LHM
   PDG-RBE-MARBEC-LSEA
   PDG-RBE-MARBEC-LAAAS
   PDG-RBE-STH-LBH
   PDG-RBE-MARBEC
UM LEMAR
   MARBEC
IN WOS Ifremer UPR
   WOS Ifremer UMR
   WOS Cotutelle UMR
   copubli-france
   copubli-univ-france
IF 3.737
TC 3
UR https://archimer.ifremer.fr/doc/00711/82271/87061.pdf
LA English
DT Article
CR PELMED - PELAGIQUES MEDITERRANÉE
DE ;Fasting;Phenotypic plasticity;Experiments;Natural mortality;Body condition;Small pelagic fish;Sardine;Mediterranean Sea
AB Animal mortality is difficult to observe in marine systems, preventing a mechanistic understanding of major drivers of fish population dynamics. In particular, starvation is known to be a major cause of mortality at larval stages, but adult mortality is often unknown. In this study, we used a laboratory food-deprivation experiment, on wild caught sardine Sardina pilchardus from the Gulf of Lions. This population is interesting because mean individual phenotype shifted around 2008, becoming dominated by small, young individuals in poor body condition, a phenomenon that may result from declines in energy availability. Continuous monitoring of body mass loss and metabolic rate in 78 captive food-deprived individuals revealed that sardines could survive for up to 57 days on body reserves. Sardines submitted to long-term caloric restriction prior to food-deprivation displayed adaptive phenotypic plasticity, reducing metabolic energy expenditure and enduring starvation for longer than sardines that had not been calorie-restricted. Overall, entry into critical fasting phase 3 occurred at a body condition of 0.72. Such a degree of leanness has rarely been observed over 34 years of wild population monitoring. Still, the proportion of sardines below this threshold has doubled since 2008 and is maximal in January and February (the peak of the reproductive season), now reaching almost 10% of the population at that time. These results indicate that the demographic changes observed in the wild may result in part from starvation-related adult mortality at the end of the winter reproductive period, despite adaptive plastic responses. 
PY 2021
PD AUG
SO Marine Environmental Research
SN 0141-1136
PU Elsevier BV
VL 170
UT 000691600900002
DI 10.1016/j.marenvres.2021.105441
ID 82271
ER

EF