ESTIMATING STRUCK AND LOSS RATES FOR HARP SEALS (PAGOPHILUS GROENLANDICUS) IN THE NORTHWEST ATLANTIC
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Abstract
One of the major sources of unreported mortality during the commercial harp seal (Pagophilus groenlandicus) hunt in the Northwest Atlantic is the number of animals that are killed but not recovered or reported, commonly referred to as struck and lost. With the significant expansion of the hunt in Canada and in Greenland during the mid‐1990s, there is a concern that the number of seals lost may have reached a level that is not sustainable relative to current harvest levels. To address this problem a study examining struck and loss rates was initiated in 1998 and 1999. Loss rates for young seals taken on the ice varied from 0% to 1.9% and from 0% to 10.0% when taken in the water. Seals greater than one year of age had loss rates of 0%–4.9% when taken on the ice and 13.8%‐50.0% when taken in the water. These estimates are lower than those recently reported for Northwest Atlantic harp seals.
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DOI: 10.1111/j.1748-7692.2002.tb01068.x
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With the significant expansion of the hunt in Canada and in Greenland during the mid‐1990s, there is a concern that the number of seals lost may have reached a level that is not sustainable relative to current harvest levels. To address this problem a study examining struck and loss rates was initiated in 1998 and 1999. Loss rates for young seals taken on the ice varied from 0% to 1.9% and from 0% to 10.0% when taken in the water. Seals greater than one year of age had loss rates of 0%–4.9% when taken on the ice and 13.8%‐50.0% when taken in the water. These estimates are lower than those recently reported for Northwest Atlantic harp seals.</div></front></TEI><istex><corpusName>wiley</corpusName><copyrightdate>2002</copyrightdate><author><json:item><name>B. Sjare</name><affiliations><json:string>Science, Oceans and Environment Branch, Department of Fisheries and Oceans, Northwest Atlantic Fisheries Centre, P. O. 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With the significant expansion of the hunt in Canada and in Greenland during the mid‐1990s, there is a concern that the number of seals lost may have reached a level that is not sustainable relative to current harvest levels. To address this problem a study examining struck and loss rates was initiated in 1998 and 1999. Loss rates for young seals taken on the ice varied from 0% to 1.9% and from 0% to 10.0% when taken in the water. Seals greater than one year of age had loss rates of 0%–4.9% when taken on the ice and 13.8%‐50.0% when taken in the water. 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With the significant expansion of the hunt in Canada and in Greenland during the mid‐1990s, there is a concern that the number of seals lost may have reached a level that is not sustainable relative to current harvest levels. To address this problem a study examining struck and loss rates was initiated in 1998 and 1999. Loss rates for young seals taken on the ice varied from 0% to 1.9% and from 0% to 10.0% when taken in the water. Seals greater than one year of age had loss rates of 0%–4.9% when taken on the ice and 13.8%‐50.0% when taken in the water. 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B.</givenNames><familyName>Stenson</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1" countryCode="CA"><unparsedAffiliation> Science, Oceans and Environment Branch, Department of Fisheries and Oceans, Northwest Atlantic Fisheries Centre, P. O. Box 5667 St. John's, Newfoundland A1C 5X1, Canada E‐mail: <email normalForm="sjareb@dfo-mpo.gc.ca">sjareb@dfo‐mpo.gc.ca</email></unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en"><keyword xml:id="k1"><i>Pagophilus groenlandicus</i></keyword><keyword xml:id="k2">harp seal population assessment</keyword><keyword xml:id="k3">unreported mortalities</keyword><keyword xml:id="k4">struck and loss estimates</keyword><keyword xml:id="k5">commercial seal hunt</keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><title type="main">A<sc>bstract</sc></title><p>One of the major sources of unreported mortality during the commercial harp seal (<i>Pagophilus groenlandicus</i>) hunt in the Northwest Atlantic is the number of animals that are killed but not recovered or reported, commonly referred to as struck and lost. With the significant expansion of the hunt in Canada and in Greenland during the mid‐1990s, there is a concern that the number of seals lost may have reached a level that is not sustainable relative to current harvest levels. To address this problem a study examining struck and loss rates was initiated in 1998 and 1999. Loss rates for young seals taken on the ice varied from 0% to 1.9% and from 0% to 10.0% when taken in the water. Seals greater than one year of age had loss rates of 0%–4.9% when taken on the ice and 13.8%‐50.0% when taken in the water. 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B.</namePart><namePart type="family">Stenson</namePart><affiliation>Science, Oceans and Environment Branch, Department of Fisheries and Oceans, Northwest Atlantic Fisheries Centre, P. O. Box 5667 St. John's, Newfoundland A1C 5X1, Canada E‐mail: sjareb@dfo‐mpo.gc.ca</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre>Serial article</genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><place><placeTerm type="text">Oxford, UK</placeTerm></place><dateCreated encoding="w3cdtf">2006-08-26</dateCreated><dateIssued encoding="w3cdtf">2002-07</dateIssued><copyrightDate encoding="w3cdtf">2002</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="eng">One of the major sources of unreported mortality during the commercial harp seal (Pagophilus groenlandicus) hunt in the Northwest Atlantic is the number of animals that are killed but not recovered or reported, commonly referred to as struck and lost. With the significant expansion of the hunt in Canada and in Greenland during the mid‐1990s, there is a concern that the number of seals lost may have reached a level that is not sustainable relative to current harvest levels. To address this problem a study examining struck and loss rates was initiated in 1998 and 1999. Loss rates for young seals taken on the ice varied from 0% to 1.9% and from 0% to 10.0% when taken in the water. Seals greater than one year of age had loss rates of 0%–4.9% when taken on the ice and 13.8%‐50.0% when taken in the water. These estimates are lower than those recently reported for Northwest Atlantic harp seals.</abstract><subject lang="eng"><genre>Keywords</genre><topic>Pagophilus groenlandicus</topic><topic>harp seal population assessment</topic><topic>unreported mortalities</topic><topic>struck and loss estimates</topic><topic>commercial seal hunt</topic></subject><relatedItem type="host"><titleInfo><title>Marine Mammal Science</title></titleInfo><identifier type="ISSN">0824-0469</identifier><identifier type="eISSN">1748-7692</identifier><identifier type="DOI">10.1111/(ISSN)1748-7692</identifier><identifier type="PublisherID">MMS</identifier><part><date>2002</date><detail type="volume"><caption>vol.</caption><number>18</number></detail><detail type="issue"><caption>no.</caption><number>3</number></detail></part></relatedItem><identifier type="istex">9B8C5105041FB943A49BCF85E06A50F7EA553598</identifier><identifier type="DOI">10.1111/j.1748-7692.2002.tb01068.x</identifier><identifier type="ArticleID">MMS710</identifier><part><extent unit="pages"><start>710</start><end>720</end><total>11</total></extent><extent unit="references"><total>11</total></extent></part><recordInfo><recordOrigin>WILEY</recordOrigin><recordContentSource>Blackwell Publishing Ltd</recordContentSource></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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