Growth, recruitment and mortality of Pandalus borealis (Krøyer), in Balsefjord, Northern Norway
A population study of the deep sea prawn started in autumn 1975. Eight months were sampled until July 1976. The von Bertalanffy growth parameters were estimated from mean carapace length of certain year classes, excluding the oldest. Values for L and K show faster growth but smaller asymtotic length...
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ftimr:oai:imr.brage.unit.no:11250/101997 2024-09-15T17:57:53+00:00 Growth, recruitment and mortality of Pandalus borealis (Krøyer), in Balsefjord, Northern Norway Thomassen, Tore 1976 application/pdf http://hdl.handle.net/11250/101997 eng eng ICES ICES CM Documents;1976/K:31 This report is not to be quoted without prior consultation with the General Secretary. http://hdl.handle.net/11250/101997 16 s. shrimps reker growth vekst recruitment rekruttering mortality dødelighet VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 Working paper 1976 ftimr 2024-07-31T03:37:25Z A population study of the deep sea prawn started in autumn 1975. Eight months were sampled until July 1976. The von Bertalanffy growth parameters were estimated from mean carapace length of certain year classes, excluding the oldest. Values for L and K show faster growth but smaller asymtotic length compared to Barents Sea values. The maternal generation did not moult until 1.5 months after the eggs had hatched. Recruitment to the utilized stock was estimated to take place at age 1.2 years. From then instantaneous rate of mortality Z, were found to increase throughout the prawns life. This can partly be explained by an increasing ratio of predation by cod. Report Barents Sea Northern Norway Pandalus borealis Institute for Marine Research: Brage IMR |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
topic |
shrimps reker growth vekst recruitment rekruttering mortality dødelighet VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 |
spellingShingle |
shrimps reker growth vekst recruitment rekruttering mortality dødelighet VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 Thomassen, Tore Growth, recruitment and mortality of Pandalus borealis (Krøyer), in Balsefjord, Northern Norway |
topic_facet |
shrimps reker growth vekst recruitment rekruttering mortality dødelighet VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 |
description |
A population study of the deep sea prawn started in autumn 1975. Eight months were sampled until July 1976. The von Bertalanffy growth parameters were estimated from mean carapace length of certain year classes, excluding the oldest. Values for L and K show faster growth but smaller asymtotic length compared to Barents Sea values. The maternal generation did not moult until 1.5 months after the eggs had hatched. Recruitment to the utilized stock was estimated to take place at age 1.2 years. From then instantaneous rate of mortality Z, were found to increase throughout the prawns life. This can partly be explained by an increasing ratio of predation by cod. |
format |
Report |
author |
Thomassen, Tore |
author_facet |
Thomassen, Tore |
author_sort |
Thomassen, Tore |
title |
Growth, recruitment and mortality of Pandalus borealis (Krøyer), in Balsefjord, Northern Norway |
title_short |
Growth, recruitment and mortality of Pandalus borealis (Krøyer), in Balsefjord, Northern Norway |
title_full |
Growth, recruitment and mortality of Pandalus borealis (Krøyer), in Balsefjord, Northern Norway |
title_fullStr |
Growth, recruitment and mortality of Pandalus borealis (Krøyer), in Balsefjord, Northern Norway |
title_full_unstemmed |
Growth, recruitment and mortality of Pandalus borealis (Krøyer), in Balsefjord, Northern Norway |
title_sort |
growth, recruitment and mortality of pandalus borealis (krøyer), in balsefjord, northern norway |
publisher |
ICES |
publishDate |
1976 |
url |
http://hdl.handle.net/11250/101997 |
genre |
Barents Sea Northern Norway Pandalus borealis |
genre_facet |
Barents Sea Northern Norway Pandalus borealis |
op_source |
16 s. |
op_relation |
ICES CM Documents;1976/K:31 This report is not to be quoted without prior consultation with the General Secretary. http://hdl.handle.net/11250/101997 |
_version_ |
1810434111202918400 |