Observations of vertical movements and depth distribution of migrating female lumpfish (Cyclopterus lumpus) in Iceland from data storage tags and trawl surveys
Abstract Lumpfish (Cyclopterus lumpus) is a high latitude species most abundant in Arctic and sub-Arctic waters of the North Atlantic. Vertical behaviour of this fish is unclear as it is often caught by both pelagic and demersal trawls. To gain greater insight into its behaviour, 41 female lumpfish...
Published in: | ICES Journal of Marine Science |
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Oxford University Press (OUP)
2015
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsv244 http://academic.oup.com/icesjms/article-pdf/73/4/1160/31230192/fsv244.pdf |
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croxfordunivpr:10.1093/icesjms/fsv244 2024-09-15T18:14:20+00:00 Observations of vertical movements and depth distribution of migrating female lumpfish (Cyclopterus lumpus) in Iceland from data storage tags and trawl surveys Kennedy, James Jónsson, Sigurður Þ. Ólafsson, Halldór G. Kasper, Jacob M. 2015 http://dx.doi.org/10.1093/icesjms/fsv244 http://academic.oup.com/icesjms/article-pdf/73/4/1160/31230192/fsv244.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 73, issue 4, page 1160-1169 ISSN 1095-9289 1054-3139 journal-article 2015 croxfordunivpr https://doi.org/10.1093/icesjms/fsv244 2024-08-19T04:22:46Z Abstract Lumpfish (Cyclopterus lumpus) is a high latitude species most abundant in Arctic and sub-Arctic waters of the North Atlantic. Vertical behaviour of this fish is unclear as it is often caught by both pelagic and demersal trawls. To gain greater insight into its behaviour, 41 female lumpfish caught during the Icelandic Groundfish Survey (IGFS) in March were tagged with data storage tags (DSTs); the IGFS finishes ∼1 week before the beginning of the lumpfish fishing season (20 March). Data retrieved from returned tags were compared with information on depth and distribution of catches of lumpfish from the IGFS. Thirteen tags were returned with days at liberty ranging from 20 to 61 d. Maximum depth recorded was 308 m (maximum depth of the tag) but based upon interpolation of temperature recordings, one fish may have descended to ∼418 m. Lumpfish displayed a range of vertical behaviours termed demersal, surface, and pelagic. During March, most exhibited either demersal or pelagic behaviour but the time spent in surface behaviour increased from March to April. During demersal behaviour, depth was rarely constant indicating the fish were not stationary. Both DST and catch data from the IGFS indicate that lumpfish exhibit diel patterns in vertical behaviour. As lumpfish frequently exhibit demersal behaviour, the use of the IGFS to monitor changes in abundance is justified. As lumpfish spend a significant amount of time in both the pelagic and demersal zone, they should be considered as a semi-pelagic (or semi-demersal) fish during this life stage/time of year. Article in Journal/Newspaper Iceland North Atlantic Oxford University Press ICES Journal of Marine Science 73 4 1160 1169 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract Lumpfish (Cyclopterus lumpus) is a high latitude species most abundant in Arctic and sub-Arctic waters of the North Atlantic. Vertical behaviour of this fish is unclear as it is often caught by both pelagic and demersal trawls. To gain greater insight into its behaviour, 41 female lumpfish caught during the Icelandic Groundfish Survey (IGFS) in March were tagged with data storage tags (DSTs); the IGFS finishes ∼1 week before the beginning of the lumpfish fishing season (20 March). Data retrieved from returned tags were compared with information on depth and distribution of catches of lumpfish from the IGFS. Thirteen tags were returned with days at liberty ranging from 20 to 61 d. Maximum depth recorded was 308 m (maximum depth of the tag) but based upon interpolation of temperature recordings, one fish may have descended to ∼418 m. Lumpfish displayed a range of vertical behaviours termed demersal, surface, and pelagic. During March, most exhibited either demersal or pelagic behaviour but the time spent in surface behaviour increased from March to April. During demersal behaviour, depth was rarely constant indicating the fish were not stationary. Both DST and catch data from the IGFS indicate that lumpfish exhibit diel patterns in vertical behaviour. As lumpfish frequently exhibit demersal behaviour, the use of the IGFS to monitor changes in abundance is justified. As lumpfish spend a significant amount of time in both the pelagic and demersal zone, they should be considered as a semi-pelagic (or semi-demersal) fish during this life stage/time of year. |
format |
Article in Journal/Newspaper |
author |
Kennedy, James Jónsson, Sigurður Þ. Ólafsson, Halldór G. Kasper, Jacob M. |
spellingShingle |
Kennedy, James Jónsson, Sigurður Þ. Ólafsson, Halldór G. Kasper, Jacob M. Observations of vertical movements and depth distribution of migrating female lumpfish (Cyclopterus lumpus) in Iceland from data storage tags and trawl surveys |
author_facet |
Kennedy, James Jónsson, Sigurður Þ. Ólafsson, Halldór G. Kasper, Jacob M. |
author_sort |
Kennedy, James |
title |
Observations of vertical movements and depth distribution of migrating female lumpfish (Cyclopterus lumpus) in Iceland from data storage tags and trawl surveys |
title_short |
Observations of vertical movements and depth distribution of migrating female lumpfish (Cyclopterus lumpus) in Iceland from data storage tags and trawl surveys |
title_full |
Observations of vertical movements and depth distribution of migrating female lumpfish (Cyclopterus lumpus) in Iceland from data storage tags and trawl surveys |
title_fullStr |
Observations of vertical movements and depth distribution of migrating female lumpfish (Cyclopterus lumpus) in Iceland from data storage tags and trawl surveys |
title_full_unstemmed |
Observations of vertical movements and depth distribution of migrating female lumpfish (Cyclopterus lumpus) in Iceland from data storage tags and trawl surveys |
title_sort |
observations of vertical movements and depth distribution of migrating female lumpfish (cyclopterus lumpus) in iceland from data storage tags and trawl surveys |
publisher |
Oxford University Press (OUP) |
publishDate |
2015 |
url |
http://dx.doi.org/10.1093/icesjms/fsv244 http://academic.oup.com/icesjms/article-pdf/73/4/1160/31230192/fsv244.pdf |
genre |
Iceland North Atlantic |
genre_facet |
Iceland North Atlantic |
op_source |
ICES Journal of Marine Science volume 73, issue 4, page 1160-1169 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsv244 |
container_title |
ICES Journal of Marine Science |
container_volume |
73 |
container_issue |
4 |
container_start_page |
1160 |
op_container_end_page |
1169 |
_version_ |
1810452100588503040 |