Annual variation in predation risk is related to the direction of selection for brain size in the wild
International audience the direction of predator-mediated selection on brain size is debated. However, the speed and the accuracy of performing a task cannot be simultaneously maximized. Large-brained individuals may be predisposed to accurate but slow decision-making, beneficial under high predatio...
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Online Access: | https://hal.science/hal-02390281 https://hal.science/hal-02390281/document https://hal.science/hal-02390281/file/s41598-019-48153-w.pdf https://doi.org/10.1038/s41598-019-48153-w |
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ftagroparistech:oai:HAL:hal-02390281v1 2024-02-11T10:08:36+01:00 Annual variation in predation risk is related to the direction of selection for brain size in the wild Jaatinen, Kim Møller, Anders, Pape Öst, Markus Ecologie Systématique et Evolution (ESE) Université Paris-Sud - Paris 11 (UP11)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS) 2019-12 https://hal.science/hal-02390281 https://hal.science/hal-02390281/document https://hal.science/hal-02390281/file/s41598-019-48153-w.pdf https://doi.org/10.1038/s41598-019-48153-w en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-019-48153-w hal-02390281 https://hal.science/hal-02390281 https://hal.science/hal-02390281/document https://hal.science/hal-02390281/file/s41598-019-48153-w.pdf doi:10.1038/s41598-019-48153-w info:eu-repo/semantics/OpenAccess ISSN: 2045-2322 EISSN: 2045-2322 Scientific Reports https://hal.science/hal-02390281 Scientific Reports, 2019, 9 (1), ⟨10.1038/s41598-019-48153-w⟩ [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] info:eu-repo/semantics/article Journal articles 2019 ftagroparistech https://doi.org/10.1038/s41598-019-48153-w 2024-01-23T23:51:26Z International audience the direction of predator-mediated selection on brain size is debated. However, the speed and the accuracy of performing a task cannot be simultaneously maximized. Large-brained individuals may be predisposed to accurate but slow decision-making, beneficial under high predation risk, but costly under low risk. This creates the possibility of temporally fluctuating selection on brain size depending on overall predation risk. We test this idea in nesting wild eider females (Somateria mollissima), in which head volume is tightly linked to brain mass (r 2 = 0.73). We determined how female relative head volume relates to survival, and characterized the seasonal timing of predation. previous work suggests that relatively large-brained and small-brained females make slow versus fast nest-site decisions, respectively, and that predation events occur seasonally earlier when predation is severe. Large-brained, late-breeding females may therefore have higher survival during high-predation years, but lower survival during safe years, assuming that predation disproportionately affects late breeders in such years. Relatively large-headed females outsurvived smaller-headed females during dangerous years, whereas the opposite was true in safer years. predation events occurred relatively later during safe years. fluctuations in the direction of survival selection on relative brain size may therefore arise due to brain-size dependent breeding phenology. Article in Journal/Newspaper Somateria mollissima AgroParisTech: HAL (Institut des sciences et industries du vivant et de l'environnement) Scientific Reports 9 1 |
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Open Polar |
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AgroParisTech: HAL (Institut des sciences et industries du vivant et de l'environnement) |
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ftagroparistech |
language |
English |
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[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] |
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[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] Jaatinen, Kim Møller, Anders, Pape Öst, Markus Annual variation in predation risk is related to the direction of selection for brain size in the wild |
topic_facet |
[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] |
description |
International audience the direction of predator-mediated selection on brain size is debated. However, the speed and the accuracy of performing a task cannot be simultaneously maximized. Large-brained individuals may be predisposed to accurate but slow decision-making, beneficial under high predation risk, but costly under low risk. This creates the possibility of temporally fluctuating selection on brain size depending on overall predation risk. We test this idea in nesting wild eider females (Somateria mollissima), in which head volume is tightly linked to brain mass (r 2 = 0.73). We determined how female relative head volume relates to survival, and characterized the seasonal timing of predation. previous work suggests that relatively large-brained and small-brained females make slow versus fast nest-site decisions, respectively, and that predation events occur seasonally earlier when predation is severe. Large-brained, late-breeding females may therefore have higher survival during high-predation years, but lower survival during safe years, assuming that predation disproportionately affects late breeders in such years. Relatively large-headed females outsurvived smaller-headed females during dangerous years, whereas the opposite was true in safer years. predation events occurred relatively later during safe years. fluctuations in the direction of survival selection on relative brain size may therefore arise due to brain-size dependent breeding phenology. |
author2 |
Ecologie Systématique et Evolution (ESE) Université Paris-Sud - Paris 11 (UP11)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Jaatinen, Kim Møller, Anders, Pape Öst, Markus |
author_facet |
Jaatinen, Kim Møller, Anders, Pape Öst, Markus |
author_sort |
Jaatinen, Kim |
title |
Annual variation in predation risk is related to the direction of selection for brain size in the wild |
title_short |
Annual variation in predation risk is related to the direction of selection for brain size in the wild |
title_full |
Annual variation in predation risk is related to the direction of selection for brain size in the wild |
title_fullStr |
Annual variation in predation risk is related to the direction of selection for brain size in the wild |
title_full_unstemmed |
Annual variation in predation risk is related to the direction of selection for brain size in the wild |
title_sort |
annual variation in predation risk is related to the direction of selection for brain size in the wild |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02390281 https://hal.science/hal-02390281/document https://hal.science/hal-02390281/file/s41598-019-48153-w.pdf https://doi.org/10.1038/s41598-019-48153-w |
genre |
Somateria mollissima |
genre_facet |
Somateria mollissima |
op_source |
ISSN: 2045-2322 EISSN: 2045-2322 Scientific Reports https://hal.science/hal-02390281 Scientific Reports, 2019, 9 (1), ⟨10.1038/s41598-019-48153-w⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-019-48153-w hal-02390281 https://hal.science/hal-02390281 https://hal.science/hal-02390281/document https://hal.science/hal-02390281/file/s41598-019-48153-w.pdf doi:10.1038/s41598-019-48153-w |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1038/s41598-019-48153-w |
container_title |
Scientific Reports |
container_volume |
9 |
container_issue |
1 |
_version_ |
1790608014318764032 |