Pigghåundersøkelsene
In the first half of this paper is given an abbreviated account of the biology of the spur dog. In the latter half of the paper the Norwegian dogfish taggings are dealt with: a. A short description of the tags used. b. Short accounts of the different tagging cruises. c. The general migration route s...
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Havforskningsinstituttet
1961
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Online Access: | http://hdl.handle.net/11250/113817 |
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ftimr:oai:imr.brage.unit.no:11250/113817 2023-05-15T15:04:13+02:00 Pigghåundersøkelsene Aasen, Olav 1961 application/pdf http://hdl.handle.net/11250/113817 nob nob Havforskningsinstituttet Fisken og havet;1961 - Nr. 1 urn:issn:0071-5638 http://hdl.handle.net/11250/113817 10 s. spiny dogfish pigghå tagging merking VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 Research report 1961 ftimr 2021-09-23T20:15:32Z In the first half of this paper is given an abbreviated account of the biology of the spur dog. In the latter half of the paper the Norwegian dogfish taggings are dealt with: a. A short description of the tags used. b. Short accounts of the different tagging cruises. c. The general migration route seems to be betvveen the Shetland-Orkneys (summer) and the Norwegian west coast (winter). Recaptures from the Shetland taggings are recorded also in the Vestfjord (arctic circle) and in the Barents Sea (Thor Iversen Bank). d. The yearly fishing mortality runs about 7 %· e. The natural mortality appears to be about 20 % per year. f. The stock on the Norwegian fishing grounds (Jan.-March 1959 & 1960) is estimated to roughly 100 000 tons. g. Some peculiarities in the recapture pattern this summer and autum (1960) indicate that a substantial portion of the stock has remained in Norwegian coastal waters throughout the year. Report Arctic Barents Sea pigghå spiny dogfish Institute for Marine Research: Brage IMR Arctic Barents Sea Vestfjord ENVELOPE(-28.750,-28.750,70.500,70.500) Thor Iversen Bank ENVELOPE(36.000,36.000,72.833,72.833) |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
Norwegian Bokmål |
topic |
spiny dogfish pigghå tagging merking VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 |
spellingShingle |
spiny dogfish pigghå tagging merking VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 Aasen, Olav Pigghåundersøkelsene |
topic_facet |
spiny dogfish pigghå tagging merking VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 |
description |
In the first half of this paper is given an abbreviated account of the biology of the spur dog. In the latter half of the paper the Norwegian dogfish taggings are dealt with: a. A short description of the tags used. b. Short accounts of the different tagging cruises. c. The general migration route seems to be betvveen the Shetland-Orkneys (summer) and the Norwegian west coast (winter). Recaptures from the Shetland taggings are recorded also in the Vestfjord (arctic circle) and in the Barents Sea (Thor Iversen Bank). d. The yearly fishing mortality runs about 7 %· e. The natural mortality appears to be about 20 % per year. f. The stock on the Norwegian fishing grounds (Jan.-March 1959 & 1960) is estimated to roughly 100 000 tons. g. Some peculiarities in the recapture pattern this summer and autum (1960) indicate that a substantial portion of the stock has remained in Norwegian coastal waters throughout the year. |
format |
Report |
author |
Aasen, Olav |
author_facet |
Aasen, Olav |
author_sort |
Aasen, Olav |
title |
Pigghåundersøkelsene |
title_short |
Pigghåundersøkelsene |
title_full |
Pigghåundersøkelsene |
title_fullStr |
Pigghåundersøkelsene |
title_full_unstemmed |
Pigghåundersøkelsene |
title_sort |
pigghåundersøkelsene |
publisher |
Havforskningsinstituttet |
publishDate |
1961 |
url |
http://hdl.handle.net/11250/113817 |
long_lat |
ENVELOPE(-28.750,-28.750,70.500,70.500) ENVELOPE(36.000,36.000,72.833,72.833) |
geographic |
Arctic Barents Sea Vestfjord Thor Iversen Bank |
geographic_facet |
Arctic Barents Sea Vestfjord Thor Iversen Bank |
genre |
Arctic Barents Sea pigghå spiny dogfish |
genre_facet |
Arctic Barents Sea pigghå spiny dogfish |
op_source |
10 s. |
op_relation |
Fisken og havet;1961 - Nr. 1 urn:issn:0071-5638 http://hdl.handle.net/11250/113817 |
_version_ |
1766336030019944448 |