FN Archimer Export Format
PT J
TI Foraging ecology during nesting influences body size in a pursuit-diving seabird
BT 
AF PAREDES, Rosana
   ORBEN, Rachael A.
   ROBY, Daniel D.
   IRONS, David B.
   YOUNG, Rebecca
   RENNER, Heather
   TREMBLAY, Yann
   WILL, Alexis
   HARDING, Ann M. A.
   KITAYSKY, Alexander S.
AS 1:1;2:2;3:3;4:4;5:5;6:6;7:7;8:5;9:8;10:5;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;
C1 Oregon State Univ, Dept Fisheries & Wildlife, Corvallis, OR 97331 USA.
   Univ Calif Santa Cruz, Long Marine Lab, Ocean Sci Dept, Santa Cruz, CA 95060 USA.
   Oregon State Univ, US Geol Survey, Oregon Cooperat Fish & Wildlife Res Unit, Corvallis, OR 97331 USA.
   US Fish & Wildlife Serv, Anchorage, AK 99503 USA.
   Univ Alaska Fairbanks, Inst Arctic Biol, Fairbanks, AK 99775 USA.
   US Fish & Wildlife Serv, Alaska Maritime Natl Wildlife Refuge, Homer, AK 99603 USA.
   IRD, Marine Biodivers Exploitat & Conservat, MARBEC UMR248, F-34203 Sete, France.
   Alaska Pacific Univ, Environm Sci Dept, Anchorage, AK 99508 USA.
C2 UNIV OREGON STATE, USA
   UNIV CALIF SANTA CRUZ, USA
   UNIV OREGON STATE, USA
   US FISH & WILDLIFE SERV, USA
   UNIV ALASKA FAIRBANKS, USA
   US FISH & WILDLIFE SERV, USA
   IRD, FRANCE
   UNIV ALASKA, USA
UM MARBEC
IF 2.361
TC 13
UR https://archimer.ifremer.fr/doc/00626/73837/73678.pdf
   https://archimer.ifremer.fr/doc/00626/73837/73679.pdf
LA English
DT Article
DE ;Body size;Foraging;Diving;Marine habitats;Stress levels;Bering Sea;Murres;Seabirds
AB Causes and consequences of differences in seabird foraging strategies between breeding colonies are not well understood. We tested whether body size of a pursuit-diving seabird, the thick-billed murre Uria lomvia, differs between breeding colonies and, if so, how size differences can be understood in the context of differences in foraging behavior, habitat use, and breeding performance. We measured adult murres over 3 seasons (2008 to 2010) at 2 of the Pribilof Islands, St. Paul and St. George, located on the continental shelf of the Bering Sea at different distances from the shelf break. Body mass and size were positively associated with deep diving and negatively associated with long flights, suggesting morphology influences foraging and commuting efficiency. Murres from St. Paul (farther from the shelf break) were larger than those from St. George (nearer the shelf break), foraged exclusively in the middle shelf domain, made deep dives during daylight, and fed on larger benthic prey. In contrast, smaller murres from St. George commuted greater distances to beyond the shelf break, made shallow dives at night, and fed on smaller, high-energy, schooling, vertical-migrating prey. Both foraging strategies resulted in similar chick-feeding rates and fledging success. The largest and the smallest murres experienced less stress during breeding compared to intermediate-sized murres, suggesting divergent selection for body size between islands. Nesting murres, as central-place foragers, may experience strong selection pressure on body size and other adaptive traits that reflect differences between breeding colonies in foraging ecology and the acquisition of resources for reproduction. 
PY 2015
PD AUG
SO Marine Ecology Progress Series
SN 0171-8630
PU Inter-research
VL 533
UT 000359382300019
BP 261
EP 276
DI 10.3354/meps11388
ID 73837
ER

EF