Studies of minke whale (Balaenoptera acutorostrata) ecology in the northeast Atlantic: Description of the 1993 scientific catch operations and preliminary results from stomach analyses and resource surveys
Ecological studies of the Northeast Atlantic minke whale (Balaenoptera acutorostrata), initiated in 1992, were continued in 1993. The field work was carried out in spring (15 April-15 May), summer (15 June-12 July) and autumn (25 August-20 September) using four chartered small-type whaling vessels w...
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ftimr:oai:imr.brage.unit.no:11250/105348 2024-09-15T17:57:13+00:00 Studies of minke whale (Balaenoptera acutorostrata) ecology in the northeast Atlantic: Description of the 1993 scientific catch operations and preliminary results from stomach analyses and resource surveys Haug, Tore Lindstrøm, Ulf Nilssen, Kjell Tormod Røttingen, Ingolf 1994 application/pdf http://hdl.handle.net/11250/105348 eng eng ICES ICES CM Documents;1994/N:14 This report is not to be cited without prior reference to the authors http://hdl.handle.net/11250/105348 53 s. minke whale vågehval landing landet fangst stomach data magedata food supply mattilgang stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 Working paper 1994 ftimr 2024-07-31T03:37:25Z Ecological studies of the Northeast Atlantic minke whale (Balaenoptera acutorostrata), initiated in 1992, were continued in 1993. The field work was carried out in spring (15 April-15 May), summer (15 June-12 July) and autumn (25 August-20 September) using four chartered small-type whaling vessels which operated in four selected subareas. To ensure random sampling of whales, stringent sampling procedures, where the vessels searched for whales along predetermined transects within each subarea, was applied. Concurrent with the sampling of minke whales, estimates of potential prey abundance were carried out using accoustics and trawls. A total of 69 whales were shot; 5, 35 and 29 in spring, summer and autumn, respectively. Preliminary results from the stomach analyses indicate a diet where fish play a very prominent role. Diet varied between both periods and areas. Gadoid fish species dominated the spring diet. In summer and autumn the diet in the northmost areas (Spitsbergen and Bear Island) was primarily characterized by the presence of krill, to a much lesser extent by capelin. This is consistent with an increase in krill and severe decrease in capelin availability in these areas in 1993. In the coastal areas of North Norway, herring is the dominant planktivorous fish, and was also the most important food item for the whales both in summer and autumn. To some extent, however, the herring was accompanied by some gadoid species during summer. Whale consumption of 0-group fish were observed to be rather limited. Along with material necessary for the study of condition and diet, sampling was also carried out for a number of other studies included in the framework of the Norwegian scientific catch program. Report Balaenoptera acutorostrata Bear Island minke whale North Norway Northeast Atlantic vågehval Spitsbergen Institute for Marine Research: Brage IMR |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
topic |
minke whale vågehval landing landet fangst stomach data magedata food supply mattilgang stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 |
spellingShingle |
minke whale vågehval landing landet fangst stomach data magedata food supply mattilgang stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 Haug, Tore Lindstrøm, Ulf Nilssen, Kjell Tormod Røttingen, Ingolf Studies of minke whale (Balaenoptera acutorostrata) ecology in the northeast Atlantic: Description of the 1993 scientific catch operations and preliminary results from stomach analyses and resource surveys |
topic_facet |
minke whale vågehval landing landet fangst stomach data magedata food supply mattilgang stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 |
description |
Ecological studies of the Northeast Atlantic minke whale (Balaenoptera acutorostrata), initiated in 1992, were continued in 1993. The field work was carried out in spring (15 April-15 May), summer (15 June-12 July) and autumn (25 August-20 September) using four chartered small-type whaling vessels which operated in four selected subareas. To ensure random sampling of whales, stringent sampling procedures, where the vessels searched for whales along predetermined transects within each subarea, was applied. Concurrent with the sampling of minke whales, estimates of potential prey abundance were carried out using accoustics and trawls. A total of 69 whales were shot; 5, 35 and 29 in spring, summer and autumn, respectively. Preliminary results from the stomach analyses indicate a diet where fish play a very prominent role. Diet varied between both periods and areas. Gadoid fish species dominated the spring diet. In summer and autumn the diet in the northmost areas (Spitsbergen and Bear Island) was primarily characterized by the presence of krill, to a much lesser extent by capelin. This is consistent with an increase in krill and severe decrease in capelin availability in these areas in 1993. In the coastal areas of North Norway, herring is the dominant planktivorous fish, and was also the most important food item for the whales both in summer and autumn. To some extent, however, the herring was accompanied by some gadoid species during summer. Whale consumption of 0-group fish were observed to be rather limited. Along with material necessary for the study of condition and diet, sampling was also carried out for a number of other studies included in the framework of the Norwegian scientific catch program. |
format |
Report |
author |
Haug, Tore Lindstrøm, Ulf Nilssen, Kjell Tormod Røttingen, Ingolf |
author_facet |
Haug, Tore Lindstrøm, Ulf Nilssen, Kjell Tormod Røttingen, Ingolf |
author_sort |
Haug, Tore |
title |
Studies of minke whale (Balaenoptera acutorostrata) ecology in the northeast Atlantic: Description of the 1993 scientific catch operations and preliminary results from stomach analyses and resource surveys |
title_short |
Studies of minke whale (Balaenoptera acutorostrata) ecology in the northeast Atlantic: Description of the 1993 scientific catch operations and preliminary results from stomach analyses and resource surveys |
title_full |
Studies of minke whale (Balaenoptera acutorostrata) ecology in the northeast Atlantic: Description of the 1993 scientific catch operations and preliminary results from stomach analyses and resource surveys |
title_fullStr |
Studies of minke whale (Balaenoptera acutorostrata) ecology in the northeast Atlantic: Description of the 1993 scientific catch operations and preliminary results from stomach analyses and resource surveys |
title_full_unstemmed |
Studies of minke whale (Balaenoptera acutorostrata) ecology in the northeast Atlantic: Description of the 1993 scientific catch operations and preliminary results from stomach analyses and resource surveys |
title_sort |
studies of minke whale (balaenoptera acutorostrata) ecology in the northeast atlantic: description of the 1993 scientific catch operations and preliminary results from stomach analyses and resource surveys |
publisher |
ICES |
publishDate |
1994 |
url |
http://hdl.handle.net/11250/105348 |
genre |
Balaenoptera acutorostrata Bear Island minke whale North Norway Northeast Atlantic vågehval Spitsbergen |
genre_facet |
Balaenoptera acutorostrata Bear Island minke whale North Norway Northeast Atlantic vågehval Spitsbergen |
op_source |
53 s. |
op_relation |
ICES CM Documents;1994/N:14 This report is not to be cited without prior reference to the authors http://hdl.handle.net/11250/105348 |
_version_ |
1810433388254855168 |