FN Archimer Export Format
PT J
TI Dolphin predation pressure on pelagic and demersal fish in the northwestern Mediterranean Sea
BT 
AF QUEIROS, Quentin
   FROMENTIN, Jean-Marc
   ASTRUC, Guillelme
   BAUER, Robert Klaus
   SARAUX, Claire
AS 1:1;2:1;3:2;4:1;5:1;
FF 1:;2:PDG-RBE-MARBEC;3:;4:;5:PDG-RBE-MARBEC-LHM;
C1 Univ Montpellier, CNRS, Ifremer, MARBEC,IRD, F-34200 Sete, France.
   Univ Paul Valery Montpellier 3, Univ Montpellier, CNRS, EPHE,IRD,CEFE, F-34293 Montpellier, France.
C2 IFREMER, FRANCE
   EPHE, FRANCE
   IRD, FRANCE
SI PALAVAS
   SETE
SE PDG-RBE-MARBEC-LHM
   PDG-RBE-MARBEC
UM MARBEC
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-p187
IF 2.359
TC 13
UR https://archimer.ifremer.fr/doc/00462/57360/59442.pdf
   https://archimer.ifremer.fr/doc/00462/57360/59443.pdf
LA English
DT Article
CR PELMED - PELAGIQUES MEDITERRANÉE
DE ;Predation pressure;Top-down effect;Bottlenose dolphin;Striped dolphin;European hake;Sardine;Anchovy;Gulf of Lions
AB Sardine Sardina pilchardus, anchovy Engraulis encrasicolus and European hake Merluccius merluccius represent a significant part of the commercial landings in the Gulf of Lions (northwestern Mediterranean Sea). However, their stocks have shown severe declines during the last decades due to fishing pressure and/or environmental changes. The aim of this study was to estimate the current predation pressure of bottlenose dolphins Tursiops truncatus and striped dolphins Stenella coeruleoalba - which are abundant in the area-on sardine, anchovy and hake. To do so, we developed an original approach based on several data sets and models (aerial surveys, stomach contents, allometric and stock assessment models) and Monte Carlo simulations to incorporate various sources of uncertainty due to data limitations. Despite the uncertainties, the results showed that dolphin predation pressure on sardine and anchovy was extremely low in the Gulf of Lions (all simulations <0.5 % of the available stock), indicating little impact of dolphins on those populations. However, significant predation pressure on hake (median value: 23 %) was detected, a value which might have doubled in the last 30 yr because of hake overfishing. Overexploitation has thus reinforced the natural mortality of hake due to dolphin predation, but this predation pressure remains 2 to 3 times lower than that exerted by fisheries. 
PY 2018
PD SEP
SO Marine Ecology Progress Series
SN 0171-8630
PU Inter-research
VL 603
UT 000446469100002
BP 13
EP 27
DI 10.3354/meps12672
ID 57360
ER

EF