FN Archimer Export Format
PT J
TI Decadal changes in blood delta C-13 values, at-sea distribution, and weaning mass of southern elephant seals from Kerguelen Islands
BT 
AF MESTRE, Julie
   AUTHIER, Matthieu
   CHEREL, Yves
   HARCOURT, Rob
   MCMAHON, Clive R.
   HINDELL, Mark A.
   CHARRASSIN, Jean-Benoit
   GUINET, Christophe
AS 1:1,2;2:3,4,5;3:1;4:6;5:6,7,8;6:8;7:9;8:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:;
C1 La Rochelle Univ, Ctr Etud Biol Chize CEBC, UMR 7372, CNRS, F-79360 Villiers En Bois, France.
   Sorbonne Univ, Coll Doctoral, F-75005 Paris, France.
   La Rochelle Univ, UMS 3462, Observ PELAGIS, La Rochelle, France.
   CNRS, La Rochelle, France.
   ADERA, Pessac, France.
   Macquarie Univ, Dept Biol Sci, N Ryde, NSW, Australia.
   Sydney Inst Marine Sci, IMOS Anim Tagging, Sydney, NSW, Australia.
   Univ Tasmania, Inst Marine & Antarctic Studies, Hobart, Tas, Australia.
   Sorbonne Univ, LOCEAN IPSL, UMR 7159 Paris, CNRS,IRD,MNHN, Paris, France.
C2 UNIV LA ROCHELLE, FRANCE
   UNIV PARIS 06, FRANCE
   UNIV LA ROCHELLE, FRANCE
   CNRS, FRANCE
   ADERA, FRANCE
   UNIV MACQUARIE, AUSTRALIA
   SIMS, AUSTRALIA
   UNIV TASMANIA, AUSTRALIA
   UNIV PARIS 06, FRANCE
IF 5.349
TC 6
UR https://archimer.ifremer.fr/doc/00659/77078/78422.pdf
   https://archimer.ifremer.fr/doc/00659/77078/78423.pdf
   https://archimer.ifremer.fr/doc/00659/77078/78424.pdf
   https://archimer.ifremer.fr/doc/00659/77078/78425.pdf
   https://archimer.ifremer.fr/doc/00659/77078/78426.pdf
LA English
DT Article
CR OISO - OCÉAN INDIEN SERVICE D'OBSERVATION
DE ;foraging habitat;stable isotopes;bio-logging;population strategies;decadal change;Indian sector of the Southern Ocean
AB Changes in the foraging environment and at-sea distribution of southern elephant seals from Kerguelen Islands were investigated over a decade (2004-2018) using tracking, weaning mass, and blood delta C-13 values. Females showed either a sub-Antarctic or an Antarctic foraging strategy, and no significant shift in their at-sea distribution was detected between 2004 and 2017. The proportion of females foraging in sub-Antarctic versus Antarctic habitats did not change over the 2006-2018 period. Pup weaning mass varied according to the foraging habitat of their mothers. The weaning mass of sub-Antarctic foraging mothers' pups decreased by 11.7 kg over the study period, but they were on average 5.8 kg heavier than pups from Antarctic foraging mothers. Pup blood delta C-13 values decreased by 1.1 parts per thousand over the study period regardless of their sex and the presumed foraging habitat of their mothers. Together, these results suggest an ecological change is occurring within the Indian sector of the Southern Ocean with possible consequences on the foraging performance of southern elephant seals. We hypothesize that this shift in delta C-13 is related to a change in primary production and/or in the composition of phytoplankton communities, but this requires further multidisciplinary investigations. 
PY 2020
PD AUG
SO Proceedings Of The Royal Society B-biological Sciences
SN 0962-8452
PU Royal Soc
VL 287
IS 1933
UT 000563925900003
DI 10.1098/rspb.2020.1544
ID 77078
ER

EF