Data from: Mating success and body condition not related to foraging specializations in male fur seals
Individual specialization is widespread among wild populations. While its fitness consequences are central in predicting the ecological and evolutionary trajectories of populations, they remain poorly understood. Long-term individual foraging specializations occur in male Antarctic (Arctocephalus ga...
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ftdryad:oai:v1.datadryad.org:10255/dryad.117744 2023-05-15T13:40:12+02:00 Data from: Mating success and body condition not related to foraging specializations in male fur seals Kernaléguen, Laëtitia Cherel, Yves Guinet, Christophe Arnould, John Kerguelen Islands Kanowna Island 2016-06-07T22:02:00Z http://hdl.handle.net/10255/dryad.117744 https://doi.org/10.5061/dryad.792gj unknown doi:10.5061/dryad.792gj/1 doi:10.1098/rsos.160143 PMID:27493771 doi:10.5061/dryad.792gj Kernaléguen L, Cherel Y, Guinet C, Arnould J (2016) Mating success and body condition not related to foraging specialisations in male fur seals. Royal Society Open Science 3(7): 160143. 2054-5703 http://hdl.handle.net/10255/dryad.117744 Fitness Payoff Stable Isotopes Territorial Males Diet Reproductive Success Article 2016 ftdryad https://doi.org/10.5061/dryad.792gj https://doi.org/10.5061/dryad.792gj/1 https://doi.org/10.1098/rsos.160143 2020-01-01T15:35:51Z Individual specialization is widespread among wild populations. While its fitness consequences are central in predicting the ecological and evolutionary trajectories of populations, they remain poorly understood. Long-term individual foraging specializations occur in male Antarctic (Arctocephalus gazella) and Australian (A. pusillus doriferus) fur seals. Strong selective pressure is expected in these highly dimorphic and polygynous species, raising the question of the fitness payoffs associated with different foraging strategies. We investigated the relationship between individual isotopic niche (a proxy of foraging specialization), body size and condition, and an index of reproductive success (harem size) in territorial males. Individuals varied greatly in their skin and fur isotopic values reflecting a range of foraging strategies within the two populations. However, in both species, isotopic niche was not correlated to body size, condition or mating success (R2/ρ < 0.06). Furthermore, no foraging niche was predominant in either species, which would have indicated a substantial long-term fitness benefit of a particular strategy via a higher survival rate. These results suggest that the fitness consequences of a foraging strategy depend not only on the quality of prey and feeding habitat but also on an individual's hunting efficiency and skills. Article in Journal/Newspaper Antarc* Antarctic Arctocephalus gazella Kerguelen Islands Dryad Digital Repository (Duke University) Antarctic Kerguelen Kerguelen Islands |
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collection |
Dryad Digital Repository (Duke University) |
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ftdryad |
language |
unknown |
topic |
Fitness Payoff Stable Isotopes Territorial Males Diet Reproductive Success |
spellingShingle |
Fitness Payoff Stable Isotopes Territorial Males Diet Reproductive Success Kernaléguen, Laëtitia Cherel, Yves Guinet, Christophe Arnould, John Data from: Mating success and body condition not related to foraging specializations in male fur seals |
topic_facet |
Fitness Payoff Stable Isotopes Territorial Males Diet Reproductive Success |
description |
Individual specialization is widespread among wild populations. While its fitness consequences are central in predicting the ecological and evolutionary trajectories of populations, they remain poorly understood. Long-term individual foraging specializations occur in male Antarctic (Arctocephalus gazella) and Australian (A. pusillus doriferus) fur seals. Strong selective pressure is expected in these highly dimorphic and polygynous species, raising the question of the fitness payoffs associated with different foraging strategies. We investigated the relationship between individual isotopic niche (a proxy of foraging specialization), body size and condition, and an index of reproductive success (harem size) in territorial males. Individuals varied greatly in their skin and fur isotopic values reflecting a range of foraging strategies within the two populations. However, in both species, isotopic niche was not correlated to body size, condition or mating success (R2/ρ < 0.06). Furthermore, no foraging niche was predominant in either species, which would have indicated a substantial long-term fitness benefit of a particular strategy via a higher survival rate. These results suggest that the fitness consequences of a foraging strategy depend not only on the quality of prey and feeding habitat but also on an individual's hunting efficiency and skills. |
format |
Article in Journal/Newspaper |
author |
Kernaléguen, Laëtitia Cherel, Yves Guinet, Christophe Arnould, John |
author_facet |
Kernaléguen, Laëtitia Cherel, Yves Guinet, Christophe Arnould, John |
author_sort |
Kernaléguen, Laëtitia |
title |
Data from: Mating success and body condition not related to foraging specializations in male fur seals |
title_short |
Data from: Mating success and body condition not related to foraging specializations in male fur seals |
title_full |
Data from: Mating success and body condition not related to foraging specializations in male fur seals |
title_fullStr |
Data from: Mating success and body condition not related to foraging specializations in male fur seals |
title_full_unstemmed |
Data from: Mating success and body condition not related to foraging specializations in male fur seals |
title_sort |
data from: mating success and body condition not related to foraging specializations in male fur seals |
publishDate |
2016 |
url |
http://hdl.handle.net/10255/dryad.117744 https://doi.org/10.5061/dryad.792gj |
op_coverage |
Kerguelen Islands Kanowna Island |
geographic |
Antarctic Kerguelen Kerguelen Islands |
geographic_facet |
Antarctic Kerguelen Kerguelen Islands |
genre |
Antarc* Antarctic Arctocephalus gazella Kerguelen Islands |
genre_facet |
Antarc* Antarctic Arctocephalus gazella Kerguelen Islands |
op_relation |
doi:10.5061/dryad.792gj/1 doi:10.1098/rsos.160143 PMID:27493771 doi:10.5061/dryad.792gj Kernaléguen L, Cherel Y, Guinet C, Arnould J (2016) Mating success and body condition not related to foraging specialisations in male fur seals. Royal Society Open Science 3(7): 160143. 2054-5703 http://hdl.handle.net/10255/dryad.117744 |
op_doi |
https://doi.org/10.5061/dryad.792gj https://doi.org/10.5061/dryad.792gj/1 https://doi.org/10.1098/rsos.160143 |
_version_ |
1766130659716235264 |