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Human shields mediate sexual conflict in a top predator

Steyaert S. M. J. G., Leclerc Martin, Pelletier F., Kindberg J., Brunberg S., Swenson Jon E. et Zedrosser A.. (2016). Human shields mediate sexual conflict in a top predator. Proceedings of the Royal Society B: Biological Sciences, 283, (1833), e20160906.

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URL officielle: http://dx.doi.org/doi:10.1098/rspb.2016.0906

Résumé

Selecting the right habitat in a risky landscape is crucial for an individual's survival and reproduction. In predator–prey systems, prey often can anticipate the habitat use of their main predator and may use protective associates (i.e. typically an apex predator) as shields against predation. Although never tested, such mechanisms should also evolve in systems in which sexual conflict affects offspring survival. Here, we assessed the relationship between offspring survival and habitat selection, as well as the use of protective associates, in a system in which sexually selected infanticide (SSI), rather than interspecific predation, affects offspring survival. We used the Scandinavian brown bear ( Ursus arctos ) population with SSI in a human-dominated landscape as our model system. Bears, especially adult males, generally avoid humans in our study system. We used resource selection functions to contrast habitat selection of GPS-collared mothers that were successful (i.e. surviving litters, n = 19) and unsuccessful (i.e. complete litter loss, n = 11) in keeping their young during the mating season (2005–2012). Habitat selection was indeed a predictor of litter survival. Successful mothers were more likely to use humans as protective associates, whereas unsuccessful mothers avoided humans. Our results suggest that principles of predator–prey and fear ecology theory (e.g. non-consumptive and cascading effects) can also be applied to the context of sexual conflict.

Type de document:Article publié dans une revue avec comité d'évaluation
ISSN:0962-8452
Volume:283
Numéro:1833
Pages:e20160906
Version évaluée par les pairs:Oui
Date:29 Juin 2016
Nombre de pages:1
Identifiant unique:10.1098/rspb.2016.0906
Sujets:Sciences naturelles et génie > Sciences naturelles > Biologie et autres sciences connexes
Département, module, service et unité de recherche:Départements et modules > Département des sciences fondamentales
Unités de recherche > Centre de recherche sur la Boréalie (CREB)
Mots-clés:human shield, fear ecology, resource selection, safety refuge, sexual conflict, sexually selected infanticide
Déposé le:27 oct. 2023 13:36
Dernière modification:05 juin 2024 13:32
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Creative Commons LicenseSauf indication contraire, les documents archivés dans Constellation sont rendus disponibles selon les termes de la licence Creative Commons "Paternité, pas d'utilisation commerciale, pas de modification" 2.5 Canada.

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