Fishing yields and size structures of Patagonian toothfish (Dissostichus eleginoides) caught with pots and long-lines off far southern Chile

Herein, we compare information taken from the Patagonian toothfish (Dissostichus eleginoides) fishery operations carried out off the far southern coast of Chile (47°00'S-57°00'S) using pots (pots) and long-lines. In January 2006 and from June to October 2006, 167 fishing hauls were done, 1...

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Autores principales:	Guerrero,Aurora, Arana,Patricio
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2009
Materias:	yields pot long-line Patagonian toothfish Dissostichus eleginoides Chile
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2009000300007
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spelling	oai:scielo:S0718-560X20090003000072010-03-17Fishing yields and size structures of Patagonian toothfish (Dissostichus eleginoides) caught with pots and long-lines off far southern ChileGuerrero,AuroraArana,Patricio yields pot long-line Patagonian toothfish Dissostichus eleginoides Chile Herein, we compare information taken from the Patagonian toothfish (Dissostichus eleginoides) fishery operations carried out off the far southern coast of Chile (47°00'S-57°00'S) using pots (pots) and long-lines. In January 2006 and from June to October 2006, 167 fishing hauls were done, 119 using long-lines and 48 using pots. The total Patagonian toothfish catch was 60.9 tons, of which 81.2%) were caught with long-lines and 18.8%o with pots. On average, 5,395 hooks and 147 pots were set per haul, with average yields of 0.08 kg hook-1 and 1.43 kg pot-1 . The average depth for setting the gear was 1,581 m (long-lines) and 1,318 m (pots). Significant differences were found between these two types of gear, as well as between the time of setting and the time of retrieval. Greater fishing yields were obtained from the long-line fishery operations, with significant differences between the gear types in terms of the catch per haul (kg hau-1 ) and the catch per length of the specimens retamed (kg 1000 m-1). On average, the individuals caught with pots (110.8 cm total length) were larger than those caught with long-lines (105.1 cm total length). Nonetheless, no significant differences were recorded for the size structures. In terms of interactions with birds, during setting, no birds were observed at the trapping operations, whereas a few specimens (≤ 10 birds) were seen during only 2.5%o of the long-line operations. During retrieval, birds were observed during 34.9%o of the hauls with pots and 62.8%o of the long-line operations. The presence of mammals around the fishery operations during setting and retrieval was similar for both types of gear.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.37 n.3 20092009-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2009000300007en
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	yields pot long-line Patagonian toothfish Dissostichus eleginoides Chile
spellingShingle	yields pot long-line Patagonian toothfish Dissostichus eleginoides Chile Guerrero,Aurora Arana,Patricio Fishing yields and size structures of Patagonian toothfish (Dissostichus eleginoides) caught with pots and long-lines off far southern Chile
description	Herein, we compare information taken from the Patagonian toothfish (Dissostichus eleginoides) fishery operations carried out off the far southern coast of Chile (47°00'S-57°00'S) using pots (pots) and long-lines. In January 2006 and from June to October 2006, 167 fishing hauls were done, 119 using long-lines and 48 using pots. The total Patagonian toothfish catch was 60.9 tons, of which 81.2%) were caught with long-lines and 18.8%o with pots. On average, 5,395 hooks and 147 pots were set per haul, with average yields of 0.08 kg hook-1 and 1.43 kg pot-1 . The average depth for setting the gear was 1,581 m (long-lines) and 1,318 m (pots). Significant differences were found between these two types of gear, as well as between the time of setting and the time of retrieval. Greater fishing yields were obtained from the long-line fishery operations, with significant differences between the gear types in terms of the catch per haul (kg hau-1 ) and the catch per length of the specimens retamed (kg 1000 m-1). On average, the individuals caught with pots (110.8 cm total length) were larger than those caught with long-lines (105.1 cm total length). Nonetheless, no significant differences were recorded for the size structures. In terms of interactions with birds, during setting, no birds were observed at the trapping operations, whereas a few specimens (≤ 10 birds) were seen during only 2.5%o of the long-line operations. During retrieval, birds were observed during 34.9%o of the hauls with pots and 62.8%o of the long-line operations. The presence of mammals around the fishery operations during setting and retrieval was similar for both types of gear.
author	Guerrero,Aurora Arana,Patricio
author_facet	Guerrero,Aurora Arana,Patricio
author_sort	Guerrero,Aurora
title	Fishing yields and size structures of Patagonian toothfish (Dissostichus eleginoides) caught with pots and long-lines off far southern Chile
title_short	Fishing yields and size structures of Patagonian toothfish (Dissostichus eleginoides) caught with pots and long-lines off far southern Chile
title_full	Fishing yields and size structures of Patagonian toothfish (Dissostichus eleginoides) caught with pots and long-lines off far southern Chile
title_fullStr	Fishing yields and size structures of Patagonian toothfish (Dissostichus eleginoides) caught with pots and long-lines off far southern Chile
title_full_unstemmed	Fishing yields and size structures of Patagonian toothfish (Dissostichus eleginoides) caught with pots and long-lines off far southern Chile
title_sort	fishing yields and size structures of patagonian toothfish (dissostichus eleginoides) caught with pots and long-lines off far southern chile
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2009000300007
work_keys_str_mv	AT guerreroaurora fishingyieldsandsizestructuresofpatagoniantoothfishdissostichuseleginoidescaughtwithpotsandlonglinesofffarsouthernchile AT aranapatricio fishingyieldsandsizestructuresofpatagoniantoothfishdissostichuseleginoidescaughtwithpotsandlonglinesofffarsouthernchile
_version_	1714205065233825792

Fishing yields and size structures of Patagonian toothfish (Dissostichus eleginoides) caught with pots and long-lines off far southern Chile

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