Efficiency and catch dynamics of collapsible square and conical pots used in the red king crab (Paralithodes camtschaticus) fishery
We compared the capture efficiency and catch dynamics of collapsible square and conical pots used in resource assessment and harvesting of red king crabs (Paralithodescamtschaticus [Tilesius, 1815]) in the Barents Sea. After two days of soaking, square pots caught three times as many crabs as conica...
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ftoceandocs:oai:aquadocs.org:1834/25498 2023-05-15T15:38:58+02:00 Efficiency and catch dynamics of collapsible square and conical pots used in the red king crab (Paralithodes camtschaticus) fishery Stiansen, Stian Fernö, Anders Furevik, Dag Jørgensen, Terje Løkkeborg, Svein 2008 application/pdf 40-46 http://hdl.handle.net/1834/25498 en eng http://fishbull.noaa.gov/1061/stiansen.pdf 0090-0656 http://hdl.handle.net/1834/25498 http://aquaticcommons.org/id/eprint/8855 403 2012-06-14 17:13:29 8855 United States National Marine Fisheries Service Biology Ecology Fisheries article TRUE 2008 ftoceandocs 2023-04-06T17:02:54Z We compared the capture efficiency and catch dynamics of collapsible square and conical pots used in resource assessment and harvesting of red king crabs (Paralithodescamtschaticus [Tilesius, 1815]) in the Barents Sea. After two days of soaking, square pots caught three times as many crabs as conical pots, and their catches consisted of a higher proportion of male crabs and male crabs larger than 160 mm carapace length compared to the catches in the conical pots. Catches in the square pots did not increase as soak times were increased beyond two days, which indicates equilibrium between the rate of entries into and the rate of exits from the pots. Catches in conical pots, however, increased with increasing soak times up to eight days, the longest soak time examined in this study. These findings demonstrate the higher efficiency of square pots and the importance of understanding catch dynamics when making population assessments based on catchper-unit-of-effort data. The favorable catch characteristics and handling properties of the collapsible square pot may make this pot design suitable for other crab fisheries, as well. Article in Journal/Newspaper Barents Sea Paralithodes camtschaticus Red king crab IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications Barents Sea |
institution |
Open Polar |
collection |
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
op_collection_id |
ftoceandocs |
language |
English |
topic |
Biology Ecology Fisheries |
spellingShingle |
Biology Ecology Fisheries Stiansen, Stian Fernö, Anders Furevik, Dag Jørgensen, Terje Løkkeborg, Svein Efficiency and catch dynamics of collapsible square and conical pots used in the red king crab (Paralithodes camtschaticus) fishery |
topic_facet |
Biology Ecology Fisheries |
description |
We compared the capture efficiency and catch dynamics of collapsible square and conical pots used in resource assessment and harvesting of red king crabs (Paralithodescamtschaticus [Tilesius, 1815]) in the Barents Sea. After two days of soaking, square pots caught three times as many crabs as conical pots, and their catches consisted of a higher proportion of male crabs and male crabs larger than 160 mm carapace length compared to the catches in the conical pots. Catches in the square pots did not increase as soak times were increased beyond two days, which indicates equilibrium between the rate of entries into and the rate of exits from the pots. Catches in conical pots, however, increased with increasing soak times up to eight days, the longest soak time examined in this study. These findings demonstrate the higher efficiency of square pots and the importance of understanding catch dynamics when making population assessments based on catchper-unit-of-effort data. The favorable catch characteristics and handling properties of the collapsible square pot may make this pot design suitable for other crab fisheries, as well. |
format |
Article in Journal/Newspaper |
author |
Stiansen, Stian Fernö, Anders Furevik, Dag Jørgensen, Terje Løkkeborg, Svein |
author_facet |
Stiansen, Stian Fernö, Anders Furevik, Dag Jørgensen, Terje Løkkeborg, Svein |
author_sort |
Stiansen, Stian |
title |
Efficiency and catch dynamics of collapsible square and conical pots used in the red king crab (Paralithodes camtschaticus) fishery |
title_short |
Efficiency and catch dynamics of collapsible square and conical pots used in the red king crab (Paralithodes camtschaticus) fishery |
title_full |
Efficiency and catch dynamics of collapsible square and conical pots used in the red king crab (Paralithodes camtschaticus) fishery |
title_fullStr |
Efficiency and catch dynamics of collapsible square and conical pots used in the red king crab (Paralithodes camtschaticus) fishery |
title_full_unstemmed |
Efficiency and catch dynamics of collapsible square and conical pots used in the red king crab (Paralithodes camtschaticus) fishery |
title_sort |
efficiency and catch dynamics of collapsible square and conical pots used in the red king crab (paralithodes camtschaticus) fishery |
publishDate |
2008 |
url |
http://hdl.handle.net/1834/25498 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea Paralithodes camtschaticus Red king crab |
genre_facet |
Barents Sea Paralithodes camtschaticus Red king crab |
op_source |
http://aquaticcommons.org/id/eprint/8855 403 2012-06-14 17:13:29 8855 United States National Marine Fisheries Service |
op_relation |
http://fishbull.noaa.gov/1061/stiansen.pdf 0090-0656 http://hdl.handle.net/1834/25498 |
_version_ |
1766370401390166016 |