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    Inverse vertical migration and feeding in glacier lanternfish (Benthosema glaciale)

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    Type
    Article
    Authors
    Dypvik, Eivind
    Klevjer, Thor A.
    Kaartvedt, Stein cc
    KAUST Department
    Red Sea Research Center (RSRC)
    Date
    2011-11-8
    Permanent link to this record
    http://hdl.handle.net/10754/325441
    
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    Abstract
    A bottom-mounted upward-facing 38-kHz echo sounder was deployed at ~400 m and cabled to shore in Masfjorden (~60 52?N, ~5 24?E), Norway. The scattering layers seen during autumn (September-October) 2008 were identified by trawling. Glacier lanternfish (Benthosema glaciale) were mainly distributed below ~200 m and displayed three different diel behavioral strategies: normal diel vertical migration (NDVM), inverse DVM (IDVM) and no DVM (NoDVM). The IDVM group was the focus of this study. It consisted of 2-year and older individuals migrating to ~200-270 m during the daytime, while descending back to deeper than ~270 m during the night. Stomach content analysis revealed increased feeding during the daytime on overwintering Calanus sp. We conclude that visually searching glacier lanternfish performing IDVM benefit from the faint daytime light in mid-waters when preying on overwintering Calanus sp. 2011 The Author(s).
    Citation
    Dypvik E, Klevjer TA, Kaartvedt S (2011) Inverse vertical migration and feeding in glacier lanternfish (Benthosema glaciale). Marine Biology 159: 443-453. doi:10.1007/s00227-011-1822-4.
    Publisher
    Springer Nature
    Journal
    Marine Biology
    ISSN
    00253162
    DOI
    10.1007/s00227-011-1822-4
    PubMed ID
    24391270
    PubMed Central ID
    PMC3873071
    ae974a485f413a2113503eed53cd6c53
    10.1007/s00227-011-1822-4
    Scopus Count
    Collections
    Articles; Red Sea Research Center (RSRC)

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