Seasonal variations in vertical migration of glacier lanternfish, Benthosema glaciale
The seasonal variations in glacier lanternfish (Benthosema glaciale) vertical distribution and diel vertical migration (DVM) were studied by use of a bottom-mounted upward-facing 38 kHz echo sounder deployed at 392 m depth and cabled to shore in Masfjorden (~60°52′N, ~5°24′E), Norway. Acoustic data...
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ftpubmed:oai:pubmedcentral.nih.gov:3873041 2023-05-15T16:21:57+02:00 Seasonal variations in vertical migration of glacier lanternfish, Benthosema glaciale Dypvik, Eivind Røstad, Anders Kaartvedt, Stein 2012-06-05 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3873041 https://doi.org/10.1007/s00227-012-1953-2 en eng Springer-Verlag http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3873041 http://dx.doi.org/10.1007/s00227-012-1953-2 © The Author(s) 2012 Original Paper Text 2012 ftpubmed https://doi.org/10.1007/s00227-012-1953-2 2014-01-05T02:09:17Z The seasonal variations in glacier lanternfish (Benthosema glaciale) vertical distribution and diel vertical migration (DVM) were studied by use of a bottom-mounted upward-facing 38 kHz echo sounder deployed at 392 m depth and cabled to shore in Masfjorden (~60°52′N, ~5°24′E), Norway. Acoustic data from July 2007–October 2008 were analyzed, and scattering layers below ~220 m during daytime were attributed to glacier lanternfish based on net sampling in this, and previous studies, as well as from analysis of the acoustic data. At these depths, three different diel behavioral strategies were apparent: normal diel vertical migration (NDVM), inverse DVM (IDVM), and no DVM (NoDVM). NoDVM was present all year, while IDVM was present in autumn and winter, and NDVM was present during spring and summer. The seasonal differences in DVM behavior seem to correlate with previously established seasonal distribution of prey. We hypothesize that in regions with seasonally migrating zooplankton, such as where calanoid copepods overwinter at depth, similar plasticity in DVM behavior might occur in other populations of lanternfishes. Text glacier Copepods PubMed Central (PMC) Norway Marine Biology 159 8 1673 1683 |
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PubMed Central (PMC) |
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language |
English |
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Original Paper |
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Original Paper Dypvik, Eivind Røstad, Anders Kaartvedt, Stein Seasonal variations in vertical migration of glacier lanternfish, Benthosema glaciale |
topic_facet |
Original Paper |
description |
The seasonal variations in glacier lanternfish (Benthosema glaciale) vertical distribution and diel vertical migration (DVM) were studied by use of a bottom-mounted upward-facing 38 kHz echo sounder deployed at 392 m depth and cabled to shore in Masfjorden (~60°52′N, ~5°24′E), Norway. Acoustic data from July 2007–October 2008 were analyzed, and scattering layers below ~220 m during daytime were attributed to glacier lanternfish based on net sampling in this, and previous studies, as well as from analysis of the acoustic data. At these depths, three different diel behavioral strategies were apparent: normal diel vertical migration (NDVM), inverse DVM (IDVM), and no DVM (NoDVM). NoDVM was present all year, while IDVM was present in autumn and winter, and NDVM was present during spring and summer. The seasonal differences in DVM behavior seem to correlate with previously established seasonal distribution of prey. We hypothesize that in regions with seasonally migrating zooplankton, such as where calanoid copepods overwinter at depth, similar plasticity in DVM behavior might occur in other populations of lanternfishes. |
format |
Text |
author |
Dypvik, Eivind Røstad, Anders Kaartvedt, Stein |
author_facet |
Dypvik, Eivind Røstad, Anders Kaartvedt, Stein |
author_sort |
Dypvik, Eivind |
title |
Seasonal variations in vertical migration of glacier lanternfish, Benthosema glaciale |
title_short |
Seasonal variations in vertical migration of glacier lanternfish, Benthosema glaciale |
title_full |
Seasonal variations in vertical migration of glacier lanternfish, Benthosema glaciale |
title_fullStr |
Seasonal variations in vertical migration of glacier lanternfish, Benthosema glaciale |
title_full_unstemmed |
Seasonal variations in vertical migration of glacier lanternfish, Benthosema glaciale |
title_sort |
seasonal variations in vertical migration of glacier lanternfish, benthosema glaciale |
publisher |
Springer-Verlag |
publishDate |
2012 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3873041 https://doi.org/10.1007/s00227-012-1953-2 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
glacier Copepods |
genre_facet |
glacier Copepods |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3873041 http://dx.doi.org/10.1007/s00227-012-1953-2 |
op_rights |
© The Author(s) 2012 |
op_doi |
https://doi.org/10.1007/s00227-012-1953-2 |
container_title |
Marine Biology |
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159 |
container_issue |
8 |
container_start_page |
1673 |
op_container_end_page |
1683 |
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1766009914259406848 |