Breeding success of a marine central place forager in the context of climate change: A modeling approach

International audience In response to climate warming, a southward shift in productive frontal systems serving as themain foraging sites for many top predator species is likely to occur in Subantarctic areas. Centralplace foragers, such as seabirds and pinnipeds, are thus likely to cope with an incr...

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Bibliographic Details
Published in:PLOS ONE
Main Authors: Massardier-Galatà, Lauriane, Morinay, Jennifer, Bailleul, Frédéric, Wajnberg, Eric, Guinet, Christophe, Coquillard, Patrick
Other Authors: Laboratoire de physique de la matière condensée (LPMC), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS), Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC), La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institut Sophia Agrobiotech (ISA), Institut National de la Recherche Agronomique (INRA)-Université Nice Sophia Antipolis (1965 - 2019) (UNS), ANR (Agence Nationale de la Recherche) MyctO-3D-MAP, SVSE 7 2011, Y. Cherel
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2017
Subjects:
Bioenergetics
Predation
Death rates
Seals
Fishes
Animal sexual behavior
Climate change
[SDE]Environmental Sciences
Antarctic
The Antarctic
Antarc*
Antarctic Fur Seal
Arctocephalus gazella
Online Access:https://hal.archives-ouvertes.fr/hal-01502770
https://hal.archives-ouvertes.fr/hal-01502770/document
https://hal.archives-ouvertes.fr/hal-01502770/file/breeding_1.pdf
https://doi.org/10.1371/journal.pone.0173797
Description
Summary:International audience In response to climate warming, a southward shift in productive frontal systems serving as themain foraging sites for many top predator species is likely to occur in Subantarctic areas. Centralplace foragers, such as seabirds and pinnipeds, are thus likely to cope with an increase inthe distance between foraging locations and their land-based breeding colonies. Understandinghow central place foragers should modify their foraging behavior in response to changes inprey accessibility appears crucial. A spatially explicit individual-based simulation model (MarineCentral Place Forager Simulator (MarCPFS)), including bio-energetic components, was built toevaluate effects of possible changes in prey resources accessibility on individual performancesand breeding success. The study was calibrated on a particular example: the Antarctic fur seal(Arctocephalus gazella), which alternates between oceanic areas in which females feed andthe land-based colony in which they suckle their young over a 120 days rearing period. Ourmodel shows the importance of the distance covered to feed and prey aggregation whichappeared to be key factors to which animals are highly sensitive. Memorization and learningabilities also appear to be essential breeding success traits. Females were found to be mostsuccessful for intermediate levels of prey aggregation and short distance to the resource,resulting in optimal female body length. Increased distance to resources due to climate warmingshould hinder pups' growth and survival while female body length should increase.

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