Investigations on diel vertical migration of 0-group fish in the Barents Sea
In August-September diel vertical migration of 0-group fish was studied in the Barents Sea. Redfish and capelin had different vertical migration patterns. 0-group redfish were found at the surface at dark and spread in the upper 50 m during the daylight period while the unpigmented 0-group capelin s...
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Havforskningsinstituttet
1975
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ftimr:oai:imr.brage.unit.no:11250/114636 2023-05-15T15:38:32+02:00 Investigations on diel vertical migration of 0-group fish in the Barents Sea Beltestad, Arvid K. Smedstad, Odd M. Nakken, Odd 1975 541586 bytes application/pdf http://hdl.handle.net/11250/114636 eng eng Havforskningsinstituttet Fiskeridirektoratets skrifter, Serie Havundersøkelser vol 16 no 7 urn:issn:0015-3117 http://hdl.handle.net/11250/114636 229-244 Research report 1975 ftimr 2021-09-23T20:15:59Z In August-September diel vertical migration of 0-group fish was studied in the Barents Sea. Redfish and capelin had different vertical migration patterns. 0-group redfish were found at the surface at dark and spread in the upper 50 m during the daylight period while the unpigmented 0-group capelin stayed in small schools close to the surface by daylight and dispersed into a weak scattering layer at the depth of the thermocline (20-30 m) at dark. This behaviour might introduce large errors to the abundance indices of 0-group capelin. Comparative fishing with a pelagic trawl and a purse seine were carried out. The samples showed no significant differences in the length distributions of each species of 0-group fish caught with the two gears. Report Barents Sea Institute for Marine Research: Brage IMR Barents Sea |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
description |
In August-September diel vertical migration of 0-group fish was studied in the Barents Sea. Redfish and capelin had different vertical migration patterns. 0-group redfish were found at the surface at dark and spread in the upper 50 m during the daylight period while the unpigmented 0-group capelin stayed in small schools close to the surface by daylight and dispersed into a weak scattering layer at the depth of the thermocline (20-30 m) at dark. This behaviour might introduce large errors to the abundance indices of 0-group capelin. Comparative fishing with a pelagic trawl and a purse seine were carried out. The samples showed no significant differences in the length distributions of each species of 0-group fish caught with the two gears. |
format |
Report |
author |
Beltestad, Arvid K. Smedstad, Odd M. Nakken, Odd |
spellingShingle |
Beltestad, Arvid K. Smedstad, Odd M. Nakken, Odd Investigations on diel vertical migration of 0-group fish in the Barents Sea |
author_facet |
Beltestad, Arvid K. Smedstad, Odd M. Nakken, Odd |
author_sort |
Beltestad, Arvid K. |
title |
Investigations on diel vertical migration of 0-group fish in the Barents Sea |
title_short |
Investigations on diel vertical migration of 0-group fish in the Barents Sea |
title_full |
Investigations on diel vertical migration of 0-group fish in the Barents Sea |
title_fullStr |
Investigations on diel vertical migration of 0-group fish in the Barents Sea |
title_full_unstemmed |
Investigations on diel vertical migration of 0-group fish in the Barents Sea |
title_sort |
investigations on diel vertical migration of 0-group fish in the barents sea |
publisher |
Havforskningsinstituttet |
publishDate |
1975 |
url |
http://hdl.handle.net/11250/114636 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_source |
229-244 |
op_relation |
Fiskeridirektoratets skrifter, Serie Havundersøkelser vol 16 no 7 urn:issn:0015-3117 http://hdl.handle.net/11250/114636 |
_version_ |
1766369539458596864 |