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    Elemental signatures in otoliths of larval walleye pollock (Theragra chalcogramma) from the northeast Pacific Ocean

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    FitzGerald Thorrold et al.pdf (362.9Kb)
    Date
    2004
    Author
    FitzGerald, Jennifer L.  Concept link
    Thorrold, Simon R.  Concept link
    Bailey, Kevin M.  Concept link
    Brown, Annette L.  Concept link
    Severin, Kenneth P.  Concept link
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    Citable URI
    https://hdl.handle.net/1912/131
    Keyword
     Stock identification; Theragra chalcogramma; Otolith geochemistry 
    Abstract
    The objectives of this study are to determine if larval walleye pollock from different geographic localities can be distinguished based on elemental signatures in their otoliths. By analyzing sagittal otoliths with both EPMA and laser ablation ICP-MS, we hoped to identify greater differences among locations than would have been possible by using either technique in isolation. If successful, the study may provide a powerful tool for determining stock structure and tracing migration pathways of walleye pollock in the north Pacific. These data could then be used by managers of one of the world's largest single species fisheries to direct the sustainable harvest of this considerable natural resource.
    Description
    The contents of the Fishery Bulletin are not been copyrighted. The definitive version was published in Fishery Bulletin 102 (2004): 604-616.
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    • Biology
    Suggested Citation
    Fishery Bulletin 102 (2004): 604-616
     

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