Improved interspecific selectivity of nylon shrimp (Heterocarpus reedi) trawling in Chile

In order to improve the inter-specific selectivity of a new bottom trawl design for demersal crustaceans, an experimental attempt was carried out to compare the shrinkage effect in length of net structure accessories, particularly shorter bridles and sweeps, based on previous studies on escape behav...

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Autores principales:	Queirolo,Dante, Ahumada,Mauricio, Gaete,Erick, Zamora,Víctor, Escobar,Roberto, Montenegro,Ivonne, Merino,José
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2009
Materias:	by-catch interspecifíc selectivity trawl nylon shrimp Heterocarpus reedi Chile
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2009000200009
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id	oai:scielo:S0718-560X2009000200009
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spelling	oai:scielo:S0718-560X20090002000092009-08-25Improved interspecific selectivity of nylon shrimp (Heterocarpus reedi) trawling in ChileQueirolo,DanteAhumada,MauricioGaete,ErickZamora,VíctorEscobar,RobertoMontenegro,IvonneMerino,José by-catch interspecifíc selectivity trawl nylon shrimp Heterocarpus reedi Chile In order to improve the inter-specific selectivity of a new bottom trawl design for demersal crustaceans, an experimental attempt was carried out to compare the shrinkage effect in length of net structure accessories, particularly shorter bridles and sweeps, based on previous studies on escape behavior of gadiform fishes. For this purposes, an experimental fishing for nylon shrimp (Heterocarpus reedi) was carried out on board of two trawler vessels. The results showed no significant differences in catch per unit of fishing effort (CPUE) for the target species between gears and significant reductions (p < 0.05) for the most important by-catch species (Merluccius gayi) with the modified gear. In fact, the average CPUE for M. gayi decreased 5.6 kg h-1 (19.2%) and 35.7 kg h-1 (47.5%) for each vessel.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.2 20092009-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2009000200009en
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	by-catch interspecifíc selectivity trawl nylon shrimp Heterocarpus reedi Chile
spellingShingle	by-catch interspecifíc selectivity trawl nylon shrimp Heterocarpus reedi Chile Queirolo,Dante Ahumada,Mauricio Gaete,Erick Zamora,Víctor Escobar,Roberto Montenegro,Ivonne Merino,José Improved interspecific selectivity of nylon shrimp (Heterocarpus reedi) trawling in Chile
description	In order to improve the inter-specific selectivity of a new bottom trawl design for demersal crustaceans, an experimental attempt was carried out to compare the shrinkage effect in length of net structure accessories, particularly shorter bridles and sweeps, based on previous studies on escape behavior of gadiform fishes. For this purposes, an experimental fishing for nylon shrimp (Heterocarpus reedi) was carried out on board of two trawler vessels. The results showed no significant differences in catch per unit of fishing effort (CPUE) for the target species between gears and significant reductions (p < 0.05) for the most important by-catch species (Merluccius gayi) with the modified gear. In fact, the average CPUE for M. gayi decreased 5.6 kg h-1 (19.2%) and 35.7 kg h-1 (47.5%) for each vessel.
author	Queirolo,Dante Ahumada,Mauricio Gaete,Erick Zamora,Víctor Escobar,Roberto Montenegro,Ivonne Merino,José
author_facet	Queirolo,Dante Ahumada,Mauricio Gaete,Erick Zamora,Víctor Escobar,Roberto Montenegro,Ivonne Merino,José
author_sort	Queirolo,Dante
title	Improved interspecific selectivity of nylon shrimp (Heterocarpus reedi) trawling in Chile
title_short	Improved interspecific selectivity of nylon shrimp (Heterocarpus reedi) trawling in Chile
title_full	Improved interspecific selectivity of nylon shrimp (Heterocarpus reedi) trawling in Chile
title_fullStr	Improved interspecific selectivity of nylon shrimp (Heterocarpus reedi) trawling in Chile
title_full_unstemmed	Improved interspecific selectivity of nylon shrimp (Heterocarpus reedi) trawling in Chile
title_sort	improved interspecific selectivity of nylon shrimp (heterocarpus reedi) trawling in 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=S0718-560X2009000200009
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Improved interspecific selectivity of nylon shrimp (Heterocarpus reedi) trawling in Chile

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