The consumption rate of northeast arctic cod - a comparison of gastric evacuation models
The consumption rares in fish are important but also often weak points in multispecies models. In the Barents Sea multispecies model (MULTSPECI, as in many other models, quantltative stomach content data are combined with gastric evacuation data or models to produce consumption rates of important pr...
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ftimr:oai:imr.brage.unit.no:11250/100287 2023-05-15T14:30:26+02:00 The consumption rate of northeast arctic cod - a comparison of gastric evacuation models Bogstad, Bjarte Mehl, Sigbjørn 1990 491562 bytes application/pdf http://hdl.handle.net/11250/100287 eng eng ICES CM documents 1990/G:22 http://hdl.handle.net/11250/100287 12 s. VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 Working paper 1990 ftimr 2021-09-23T20:14:49Z The consumption rares in fish are important but also often weak points in multispecies models. In the Barents Sea multispecies model (MULTSPECI, as in many other models, quantltative stomach content data are combined with gastric evacuation data or models to produce consumption rates of important prey species. To evaluate the evacuation model presently used for cod in the Barents Sea and the derived consumption rates, we have combined stomach data from 1984 with five other evacuation models for cod. The results are compared and judged against data on prey stock sizes, individual cod growth, daily rations and food conversion efficiency. The rations derived from the different models ranged from 0.5 to 1.22 of the BW daily on average for all agegroups of cod or from 2.1 to 4.4 times the biomass of the total cod stock annually. Food conversion efficiency varied between 6 and 591 for the different models and agegroups. Report Arctic cod Arctic Barents Sea Northeast Arctic cod Institute for Marine Research: Brage IMR Arctic Barents Sea |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
topic |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 |
spellingShingle |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 Bogstad, Bjarte Mehl, Sigbjørn The consumption rate of northeast arctic cod - a comparison of gastric evacuation models |
topic_facet |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 |
description |
The consumption rares in fish are important but also often weak points in multispecies models. In the Barents Sea multispecies model (MULTSPECI, as in many other models, quantltative stomach content data are combined with gastric evacuation data or models to produce consumption rates of important prey species. To evaluate the evacuation model presently used for cod in the Barents Sea and the derived consumption rates, we have combined stomach data from 1984 with five other evacuation models for cod. The results are compared and judged against data on prey stock sizes, individual cod growth, daily rations and food conversion efficiency. The rations derived from the different models ranged from 0.5 to 1.22 of the BW daily on average for all agegroups of cod or from 2.1 to 4.4 times the biomass of the total cod stock annually. Food conversion efficiency varied between 6 and 591 for the different models and agegroups. |
format |
Report |
author |
Bogstad, Bjarte Mehl, Sigbjørn |
author_facet |
Bogstad, Bjarte Mehl, Sigbjørn |
author_sort |
Bogstad, Bjarte |
title |
The consumption rate of northeast arctic cod - a comparison of gastric evacuation models |
title_short |
The consumption rate of northeast arctic cod - a comparison of gastric evacuation models |
title_full |
The consumption rate of northeast arctic cod - a comparison of gastric evacuation models |
title_fullStr |
The consumption rate of northeast arctic cod - a comparison of gastric evacuation models |
title_full_unstemmed |
The consumption rate of northeast arctic cod - a comparison of gastric evacuation models |
title_sort |
consumption rate of northeast arctic cod - a comparison of gastric evacuation models |
publishDate |
1990 |
url |
http://hdl.handle.net/11250/100287 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic cod Arctic Barents Sea Northeast Arctic cod |
genre_facet |
Arctic cod Arctic Barents Sea Northeast Arctic cod |
op_source |
12 s. |
op_relation |
ICES CM documents 1990/G:22 http://hdl.handle.net/11250/100287 |
_version_ |
1766304287191728128 |