Identification of Prey Captures in Australian Fur Seals (Arctocephalus pusillus doriferus) Using Head-Mounted Accelerometers: Field Validation with Animal-Borne Video Cameras
Identifieur interne : 000F33 ( Pmc/Checkpoint ); précédent : 000F32; suivant : 000F34Identification of Prey Captures in Australian Fur Seals (Arctocephalus pusillus doriferus) Using Head-Mounted Accelerometers: Field Validation with Animal-Borne Video Cameras
Auteurs : Beth L. Volpov [Australie] ; Andrew J. Hoskins [Australie] ; Brian C. Battaile [Canada] ; Morgane Viviant [France] ; Kathryn E. Wheatley [Australie] ; Greg Marshall [États-Unis] ; Kyler Abernathy [États-Unis] ; John P. Y. Arnould [Australie]Source :
- PLoS ONE [ 1932-6203 ] ; 2015.
Abstract
This study investigated prey captures in free-ranging adult female Australian fur seals (
Url:
DOI: 10.1371/journal.pone.0128789
PubMed: 26107647
PubMed Central: 4479472
Affiliations:
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PMC:4479472Le document en format XML
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Identification of Prey Captures in Australian Fur Seals (<italic>Arctocephalus pusillus doriferus</italic>
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<author><name sortKey="Viviant, Morgane" sort="Viviant, Morgane" uniqKey="Viviant M" first="Morgane" last="Viviant">Morgane Viviant</name>
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<author><name sortKey="Arnould, John P Y" sort="Arnould, John P Y" uniqKey="Arnould J" first="John P. Y." last="Arnould">John P. Y. Arnould</name>
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<front><div type="abstract" xml:lang="en"><p>This study investigated prey captures in free-ranging adult female Australian fur seals (<italic>Arctocephalus pusillus doriferus</italic>
) using head-mounted 3-axis accelerometers and animal-borne video cameras. Acceleration data was used to identify individual attempted prey captures (APC), and video data were used to independently verify APC and prey types. Results demonstrated that head-mounted accelerometers could detect individual APC but were unable to distinguish among prey types (fish, cephalopod, stingray) or between successful captures and unsuccessful capture attempts. Mean detection rate (true positive rate) on individual animals in the testing subset ranged from 67-100%, and mean detection on the testing subset averaged across 4 animals ranged from 82-97%. Mean False positive (FP) rate ranged from 15-67% individually in the testing subset, and 26-59% averaged across 4 animals. Surge and sway had significantly greater detection rates, but also conversely greater FP rates compared to heave. Video data also indicated that some head movements recorded by the accelerometers were unrelated to APC and that a peak in acceleration variance did not always equate to an individual prey item. The results of the present study indicate that head-mounted accelerometers provide a complementary tool for investigating foraging behaviour in pinnipeds, but that detection and FP correction factors need to be applied for reliable field application.</p>
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<pmc article-type="research-article"><pmc-dir>properties open_access</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-ta">PLoS One</journal-id>
<journal-id journal-id-type="iso-abbrev">PLoS ONE</journal-id>
<journal-id journal-id-type="publisher-id">plos</journal-id>
<journal-id journal-id-type="pmc">plosone</journal-id>
<journal-title-group><journal-title>PLoS ONE</journal-title>
</journal-title-group>
<issn pub-type="epub">1932-6203</issn>
<publisher><publisher-name>Public Library of Science</publisher-name>
<publisher-loc>San Francisco, CA USA</publisher-loc>
</publisher>
</journal-meta>
<article-meta><article-id pub-id-type="pmid">26107647</article-id>
<article-id pub-id-type="pmc">4479472</article-id>
<article-id pub-id-type="doi">10.1371/journal.pone.0128789</article-id>
<article-id pub-id-type="publisher-id">PONE-D-15-06125</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject>
</subj-group>
</article-categories>
<title-group><article-title>Identification of Prey Captures in Australian Fur Seals (<italic>Arctocephalus pusillus doriferus</italic>
) Using Head-Mounted Accelerometers: Field Validation with Animal-Borne Video Cameras</article-title>
<alt-title alt-title-type="running-head">Identification of Prey Captures in Australian Fur Seals</alt-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Volpov</surname>
<given-names>Beth L.</given-names>
</name>
<xref ref-type="aff" rid="aff001"><sup>1</sup>
</xref>
<xref rid="cor001" ref-type="corresp">*</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Hoskins</surname>
<given-names>Andrew J.</given-names>
</name>
<xref ref-type="aff" rid="aff001"><sup>1</sup>
</xref>
<xref ref-type="author-notes" rid="currentaff001"><sup>¤a</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Battaile</surname>
<given-names>Brian C.</given-names>
</name>
<xref ref-type="aff" rid="aff002"><sup>2</sup>
</xref>
<xref ref-type="author-notes" rid="currentaff002"><sup>¤b</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Viviant</surname>
<given-names>Morgane</given-names>
</name>
<xref ref-type="aff" rid="aff003"><sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Wheatley</surname>
<given-names>Kathryn E.</given-names>
</name>
<xref ref-type="aff" rid="aff001"><sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Marshall</surname>
<given-names>Greg</given-names>
</name>
<xref ref-type="aff" rid="aff004"><sup>4</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Abernathy</surname>
<given-names>Kyler</given-names>
</name>
<xref ref-type="aff" rid="aff004"><sup>4</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Arnould</surname>
<given-names>John P. Y.</given-names>
</name>
<xref ref-type="aff" rid="aff001"><sup>1</sup>
</xref>
</contrib>
</contrib-group>
<aff id="aff001"><label>1</label>
<addr-line>Deakin University, School of Life and Environmental Sciences, Burwood, Victoria, Australia</addr-line>
</aff>
<aff id="aff002"><label>2</label>
<addr-line>University of British Columbia, Marine Mammal Research Unit, Fisheries Centre, Vancouver, BC, Canada</addr-line>
</aff>
<aff id="aff003"><label>3</label>
<addr-line>Centre d’Etudes Biologiques de Chize', Centre National de la Recherche Scientifique, Villiers en Bois, France</addr-line>
</aff>
<aff id="aff004"><label>4</label>
<addr-line>National Geographic, Remote Imaging Department, Washington, DC, United States of America</addr-line>
</aff>
<contrib-group><contrib contrib-type="editor"><name><surname>Miller</surname>
<given-names>Patrick J. O.</given-names>
</name>
<role>Academic Editor</role>
<xref ref-type="aff" rid="edit1"></xref>
</contrib>
</contrib-group>
<aff id="edit1"><addr-line>University of St Andrews, UNITED KINGDOM</addr-line>
</aff>
<author-notes><fn fn-type="conflict" id="coi001"><p><bold>Competing Interests: </bold>
The authors have declared that no competing interests exist.</p>
</fn>
<fn fn-type="con" id="contrib001"><p>Conceived and designed the experiments: JPYA BLV. Performed the experiments: BLV AJH KEW JPYA. Analyzed the data: BLV BCB AJH. Contributed reagents/materials/analysis tools: MV GM KA JPYA. Wrote the paper: BLV AJH BCB MV KEW GM KA JPYA.</p>
</fn>
<fn fn-type="current-aff" id="currentaff001"><label>¤a</label>
<p>Current address: Commonwealth Scientific and Industrial Research Organisation, Land and Water Flagship, Canberra, Australian Capital Territory, Australia</p>
</fn>
<fn fn-type="current-aff" id="currentaff002"><label>¤b</label>
<p>Current address: Alaska Science Center, United States Geological Survey, Anchorage, Alaska, United States of America</p>
</fn>
<corresp id="cor001">* E-mail: <email>byou@deakin.edu.au</email>
</corresp>
</author-notes>
<pub-date pub-type="epub"><day>24</day>
<month>6</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="collection"><year>2015</year>
</pub-date>
<volume>10</volume>
<issue>6</issue>
<elocation-id>e0128789</elocation-id>
<history><date date-type="received"><day>9</day>
<month>2</month>
<year>2015</year>
</date>
<date date-type="accepted"><day>30</day>
<month>4</month>
<year>2015</year>
</date>
</history>
<permissions><copyright-year>2015</copyright-year>
<copyright-holder>Volpov et al</copyright-holder>
<license xlink:href="http://creativecommons.org/licenses/by/4.0/"><license-p>This is an open access article distributed under the terms of the <ext-link ext-link-type="uri" xlink:href="http://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution License</ext-link>
, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited</license-p>
</license>
</permissions>
<self-uri content-type="pdf" xlink:type="simple" xlink:href="pone.0128789.pdf"></self-uri>
<abstract><p>This study investigated prey captures in free-ranging adult female Australian fur seals (<italic>Arctocephalus pusillus doriferus</italic>
) using head-mounted 3-axis accelerometers and animal-borne video cameras. Acceleration data was used to identify individual attempted prey captures (APC), and video data were used to independently verify APC and prey types. Results demonstrated that head-mounted accelerometers could detect individual APC but were unable to distinguish among prey types (fish, cephalopod, stingray) or between successful captures and unsuccessful capture attempts. Mean detection rate (true positive rate) on individual animals in the testing subset ranged from 67-100%, and mean detection on the testing subset averaged across 4 animals ranged from 82-97%. Mean False positive (FP) rate ranged from 15-67% individually in the testing subset, and 26-59% averaged across 4 animals. Surge and sway had significantly greater detection rates, but also conversely greater FP rates compared to heave. Video data also indicated that some head movements recorded by the accelerometers were unrelated to APC and that a peak in acceleration variance did not always equate to an individual prey item. The results of the present study indicate that head-mounted accelerometers provide a complementary tool for investigating foraging behaviour in pinnipeds, but that detection and FP correction factors need to be applied for reliable field application.</p>
</abstract>
<funding-group><funding-statement>Financial support for this project was provided by the Office of Naval Research (USA), the Australian Research Council, M.A. the Ingram Trust and the Holsworth Wildlife Research Endowment. Graduate support to B. Volpov was provided by Deakin University Postgraduate Research Scholarship.</funding-statement>
</funding-group>
<counts><fig-count count="6"></fig-count>
<table-count count="3"></table-count>
<page-count count="19"></page-count>
</counts>
<custom-meta-group><custom-meta id="data-availability"><meta-name>Data Availability</meta-name>
<meta-value>Data are provided as Supporting Information file "S3 Table".</meta-value>
</custom-meta>
</custom-meta-group>
</article-meta>
<notes><title>Data Availability</title>
<p>Data are provided as Supporting Information file "S3 Table".</p>
</notes>
</front>
</pmc>
<affiliations><list><country><li>Australie</li>
<li>Canada</li>
<li>France</li>
<li>États-Unis</li>
</country>
<region><li>District de Columbia</li>
</region>
</list>
<tree><country name="Australie"><noRegion><name sortKey="Volpov, Beth L" sort="Volpov, Beth L" uniqKey="Volpov B" first="Beth L." last="Volpov">Beth L. Volpov</name>
</noRegion>
<name sortKey="Arnould, John P Y" sort="Arnould, John P Y" uniqKey="Arnould J" first="John P. Y." last="Arnould">John P. Y. Arnould</name>
<name sortKey="Hoskins, Andrew J" sort="Hoskins, Andrew J" uniqKey="Hoskins A" first="Andrew J." last="Hoskins">Andrew J. Hoskins</name>
<name sortKey="Wheatley, Kathryn E" sort="Wheatley, Kathryn E" uniqKey="Wheatley K" first="Kathryn E." last="Wheatley">Kathryn E. Wheatley</name>
</country>
<country name="Canada"><noRegion><name sortKey="Battaile, Brian C" sort="Battaile, Brian C" uniqKey="Battaile B" first="Brian C." last="Battaile">Brian C. Battaile</name>
</noRegion>
</country>
<country name="France"><noRegion><name sortKey="Viviant, Morgane" sort="Viviant, Morgane" uniqKey="Viviant M" first="Morgane" last="Viviant">Morgane Viviant</name>
</noRegion>
</country>
<country name="États-Unis"><region name="District de Columbia"><name sortKey="Marshall, Greg" sort="Marshall, Greg" uniqKey="Marshall G" first="Greg" last="Marshall">Greg Marshall</name>
</region>
<name sortKey="Abernathy, Kyler" sort="Abernathy, Kyler" uniqKey="Abernathy K" first="Kyler" last="Abernathy">Kyler Abernathy</name>
</country>
</tree>
</affiliations>
</record>
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