Sex‐specific effects of fisheries and climate on the demography of sexually dimorphic seabirds
International audience 1. Many animal taxa exhibit sex-specific variation in ecological traits, such as foraging and distribution. These differences could result in sex-specific responses to change, but such demographic effects are poorly understood. 2. Here, we test for sex-specific differences in...
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Online Access: | https://hal.science/hal-02161559 https://doi.org/10.1111/1365-2656.13009 |
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ftinstagro:oai:HAL:hal-02161559v1 2024-05-19T07:40:38+00:00 Sex‐specific effects of fisheries and climate on the demography of sexually dimorphic seabirds Gianuca, Dimas Votier, Stephen, C Pardo, Deborah Wood, Andrew, G Sherley, Richard, B Ireland, Louise Choquet, Rémi Pradel, Roger Townley, Stuart Forcada, Jaume Tuck, Geoffrey, N Phillips, Richard, A University of Exeter Environment and Sustainability Institute Penryn, UK British Antarctic Survey (BAS) Natural Environment Research Council (NERC) University of Nottingham, UK (UON) University of Cape Town Centre d’Ecologie Fonctionnelle et Evolutive (CEFE) Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud )-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro) 2019 https://hal.science/hal-02161559 https://doi.org/10.1111/1365-2656.13009 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/1365-2656.13009 hal-02161559 https://hal.science/hal-02161559 doi:10.1111/1365-2656.13009 ISSN: 0021-8790 EISSN: 1365-2656 Journal of Animal Ecology https://hal.science/hal-02161559 Journal of Animal Ecology, 2019, 88 (9), pp.1366-1378. ⟨10.1111/1365-2656.13009⟩ [SDV.EE]Life Sciences [q-bio]/Ecology environment info:eu-repo/semantics/article Journal articles 2019 ftinstagro https://doi.org/10.1111/1365-2656.13009 2024-04-25T17:20:23Z International audience 1. Many animal taxa exhibit sex-specific variation in ecological traits, such as foraging and distribution. These differences could result in sex-specific responses to change, but such demographic effects are poorly understood. 2. Here, we test for sex-specific differences in the demography of northern (NGP, Macronectes halli) and southern (SGP, M. giganteus) giant petrels-strongly sexually size-dimorphic birds that breed sympatrically at South Georgia, South Atlantic Ocean. Both species feed at sea or on carrion on land, but larger males (30% heavier) are more reliant on terrestrial foraging than the more pelagic females. Using multi-event mark-recapture models, we examine the impacts of long-term changes in environmental conditions and commercial fishing on annual adult survival and use two-sex matrix population models to forecast future trends. 3. As expected, survival of male NGP was positively affected by carrion availability, but negatively affected by zonal winds. Female survival was positively affected by meridional winds and El Niño-Southern Oscillation (ENSO), and negatively affected by sea ice concentration and pelagic longline effort. Survival of SGPs did not differ between sexes; however, survival of males only was positively correlated with the Southern Annular Mode (SAM). 4. Two-sex population projections indicate that future environmental conditions are likely to benefit giant petrels. However, any potential increase in pelagic longline fisheries could reduce female survival and population growth. 5. Our study reveals that sex-specific ecological differences can lead to divergent responses to environmental drivers (i.e. climate and fisheries). Moreover, because such effects may not be apparent when all individuals are considered together, ignoring sex differences could underestimate the relative influence of a changing environment on demography. K E Y W O R D S giant petrels, Macronectes giganteus, Macronectes halli, sex-specific effects, sexual size dimorphism, South ... Article in Journal/Newspaper Giant Petrels Macronectes giganteus Sea ice South Atlantic Ocean Portail HAL Institut Agro Journal of Animal Ecology 88 9 1366 1378 |
institution |
Open Polar |
collection |
Portail HAL Institut Agro |
op_collection_id |
ftinstagro |
language |
English |
topic |
[SDV.EE]Life Sciences [q-bio]/Ecology environment |
spellingShingle |
[SDV.EE]Life Sciences [q-bio]/Ecology environment Gianuca, Dimas Votier, Stephen, C Pardo, Deborah Wood, Andrew, G Sherley, Richard, B Ireland, Louise Choquet, Rémi Pradel, Roger Townley, Stuart Forcada, Jaume Tuck, Geoffrey, N Phillips, Richard, A Sex‐specific effects of fisheries and climate on the demography of sexually dimorphic seabirds |
topic_facet |
[SDV.EE]Life Sciences [q-bio]/Ecology environment |
description |
International audience 1. Many animal taxa exhibit sex-specific variation in ecological traits, such as foraging and distribution. These differences could result in sex-specific responses to change, but such demographic effects are poorly understood. 2. Here, we test for sex-specific differences in the demography of northern (NGP, Macronectes halli) and southern (SGP, M. giganteus) giant petrels-strongly sexually size-dimorphic birds that breed sympatrically at South Georgia, South Atlantic Ocean. Both species feed at sea or on carrion on land, but larger males (30% heavier) are more reliant on terrestrial foraging than the more pelagic females. Using multi-event mark-recapture models, we examine the impacts of long-term changes in environmental conditions and commercial fishing on annual adult survival and use two-sex matrix population models to forecast future trends. 3. As expected, survival of male NGP was positively affected by carrion availability, but negatively affected by zonal winds. Female survival was positively affected by meridional winds and El Niño-Southern Oscillation (ENSO), and negatively affected by sea ice concentration and pelagic longline effort. Survival of SGPs did not differ between sexes; however, survival of males only was positively correlated with the Southern Annular Mode (SAM). 4. Two-sex population projections indicate that future environmental conditions are likely to benefit giant petrels. However, any potential increase in pelagic longline fisheries could reduce female survival and population growth. 5. Our study reveals that sex-specific ecological differences can lead to divergent responses to environmental drivers (i.e. climate and fisheries). Moreover, because such effects may not be apparent when all individuals are considered together, ignoring sex differences could underestimate the relative influence of a changing environment on demography. K E Y W O R D S giant petrels, Macronectes giganteus, Macronectes halli, sex-specific effects, sexual size dimorphism, South ... |
author2 |
University of Exeter Environment and Sustainability Institute Penryn, UK British Antarctic Survey (BAS) Natural Environment Research Council (NERC) University of Nottingham, UK (UON) University of Cape Town Centre d’Ecologie Fonctionnelle et Evolutive (CEFE) Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud )-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro) |
format |
Article in Journal/Newspaper |
author |
Gianuca, Dimas Votier, Stephen, C Pardo, Deborah Wood, Andrew, G Sherley, Richard, B Ireland, Louise Choquet, Rémi Pradel, Roger Townley, Stuart Forcada, Jaume Tuck, Geoffrey, N Phillips, Richard, A |
author_facet |
Gianuca, Dimas Votier, Stephen, C Pardo, Deborah Wood, Andrew, G Sherley, Richard, B Ireland, Louise Choquet, Rémi Pradel, Roger Townley, Stuart Forcada, Jaume Tuck, Geoffrey, N Phillips, Richard, A |
author_sort |
Gianuca, Dimas |
title |
Sex‐specific effects of fisheries and climate on the demography of sexually dimorphic seabirds |
title_short |
Sex‐specific effects of fisheries and climate on the demography of sexually dimorphic seabirds |
title_full |
Sex‐specific effects of fisheries and climate on the demography of sexually dimorphic seabirds |
title_fullStr |
Sex‐specific effects of fisheries and climate on the demography of sexually dimorphic seabirds |
title_full_unstemmed |
Sex‐specific effects of fisheries and climate on the demography of sexually dimorphic seabirds |
title_sort |
sex‐specific effects of fisheries and climate on the demography of sexually dimorphic seabirds |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02161559 https://doi.org/10.1111/1365-2656.13009 |
genre |
Giant Petrels Macronectes giganteus Sea ice South Atlantic Ocean |
genre_facet |
Giant Petrels Macronectes giganteus Sea ice South Atlantic Ocean |
op_source |
ISSN: 0021-8790 EISSN: 1365-2656 Journal of Animal Ecology https://hal.science/hal-02161559 Journal of Animal Ecology, 2019, 88 (9), pp.1366-1378. ⟨10.1111/1365-2656.13009⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/1365-2656.13009 hal-02161559 https://hal.science/hal-02161559 doi:10.1111/1365-2656.13009 |
op_doi |
https://doi.org/10.1111/1365-2656.13009 |
container_title |
Journal of Animal Ecology |
container_volume |
88 |
container_issue |
9 |
container_start_page |
1366 |
op_container_end_page |
1378 |
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1799480221494149120 |