Foraging site fidelity of lactating New Zealand sea lions
Abstract Ecologists often describe the foraging ecology of a species as a whole, treating conspecific individuals as ecologically equal. However, individual specialization has potentially important ecological, evolutionary and conservation implications. Foraging studies are usually based on the fora...
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crwiley:10.1111/j.1469-7998.2008.00463.x 2024-06-02T08:03:45+00:00 Foraging site fidelity of lactating New Zealand sea lions Chilvers, B. L. 2008 http://dx.doi.org/10.1111/j.1469-7998.2008.00463.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-7998.2008.00463.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.2008.00463.x https://onlinelibrary.wiley.com/doi/full-xml/10.1111/j.1469-7998.2008.00463.x https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.2008.00463.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Zoology volume 276, issue 1, page 28-36 ISSN 0952-8369 1469-7998 journal-article 2008 crwiley https://doi.org/10.1111/j.1469-7998.2008.00463.x 2024-05-03T11:24:01Z Abstract Ecologists often describe the foraging ecology of a species as a whole, treating conspecific individuals as ecologically equal. However, individual specialization has potentially important ecological, evolutionary and conservation implications. Foraging studies are usually based on the foraging behaviours of individuals sampled in only 1 year. In this study, the site fidelity of foraging locations of nine female New Zealand sea lions (NZ sea lions Phocarctos hookeri ) from Enderby Island, Auckland Islands, were investigated by repeating their satellite tracking between 1 and 4 years after they were first tracked. Females were monitored during early lactation in the austral summers of 2001–2005. The kernel ranges of females' foraging satellite location concentrations overlapped consistently within and between years. As predicted for benthic foragers, NZ sea lions show low individual variability in foraging behaviour and greater specialization. It is important to understand the spatial and temporal limitations on an individual's foraging‐site fidelity, because they can affect a species' ability to cope with environmental changes and anthropogenic impacts. This has significant implications for NZ sea lions management and conservation. Article in Journal/Newspaper Auckland Islands Enderby Island Wiley Online Library Austral New Zealand Journal of Zoology 276 1 28 36 |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract Ecologists often describe the foraging ecology of a species as a whole, treating conspecific individuals as ecologically equal. However, individual specialization has potentially important ecological, evolutionary and conservation implications. Foraging studies are usually based on the foraging behaviours of individuals sampled in only 1 year. In this study, the site fidelity of foraging locations of nine female New Zealand sea lions (NZ sea lions Phocarctos hookeri ) from Enderby Island, Auckland Islands, were investigated by repeating their satellite tracking between 1 and 4 years after they were first tracked. Females were monitored during early lactation in the austral summers of 2001–2005. The kernel ranges of females' foraging satellite location concentrations overlapped consistently within and between years. As predicted for benthic foragers, NZ sea lions show low individual variability in foraging behaviour and greater specialization. It is important to understand the spatial and temporal limitations on an individual's foraging‐site fidelity, because they can affect a species' ability to cope with environmental changes and anthropogenic impacts. This has significant implications for NZ sea lions management and conservation. |
format |
Article in Journal/Newspaper |
author |
Chilvers, B. L. |
spellingShingle |
Chilvers, B. L. Foraging site fidelity of lactating New Zealand sea lions |
author_facet |
Chilvers, B. L. |
author_sort |
Chilvers, B. L. |
title |
Foraging site fidelity of lactating New Zealand sea lions |
title_short |
Foraging site fidelity of lactating New Zealand sea lions |
title_full |
Foraging site fidelity of lactating New Zealand sea lions |
title_fullStr |
Foraging site fidelity of lactating New Zealand sea lions |
title_full_unstemmed |
Foraging site fidelity of lactating New Zealand sea lions |
title_sort |
foraging site fidelity of lactating new zealand sea lions |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1111/j.1469-7998.2008.00463.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-7998.2008.00463.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.2008.00463.x https://onlinelibrary.wiley.com/doi/full-xml/10.1111/j.1469-7998.2008.00463.x https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.2008.00463.x |
geographic |
Austral New Zealand |
geographic_facet |
Austral New Zealand |
genre |
Auckland Islands Enderby Island |
genre_facet |
Auckland Islands Enderby Island |
op_source |
Journal of Zoology volume 276, issue 1, page 28-36 ISSN 0952-8369 1469-7998 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1469-7998.2008.00463.x |
container_title |
Journal of Zoology |
container_volume |
276 |
container_issue |
1 |
container_start_page |
28 |
op_container_end_page |
36 |
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1800748357865439232 |