Inverse vertical migration and feeding in glacier lanternfish (Benthosema glaciale)
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ArticleKAUST Department
Red Sea Research Center (RSRC)Date
2011-11-8Permanent link to this record
http://hdl.handle.net/10754/325441
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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 NatureJournal
Marine BiologyISSN
00253162PubMed ID
24391270PubMed Central ID
PMC3873071ae974a485f413a2113503eed53cd6c53
10.1007/s00227-011-1822-4
Scopus Count
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