Catch composition of the spiny lobster Panulirus gracilis (Decapoda: Palinuridae) off the western coast of Mexico

The lobster fishery in the Gulf of California and the south-central region of the western coast of Mexico consists of small-scale artisanal activity supported by Panulirus gracilis and P. inflatus, with an annual average catch of 132 ton. The present study analyzes the landing composition of this fi...

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Autor principal:	Pérez-González,Raúl
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2011
Materias:	population structure spiny lobster Panulirus gracilis Gulf of California Mexico
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2011000200004
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spelling	oai:scielo:S0718-560X20110002000042011-07-26Catch composition of the spiny lobster Panulirus gracilis (Decapoda: Palinuridae) off the western coast of MexicoPérez-González,Raúl population structure spiny lobster Panulirus gracilis Gulf of California Mexico The lobster fishery in the Gulf of California and the south-central region of the western coast of Mexico consists of small-scale artisanal activity supported by Panulirus gracilis and P. inflatus, with an annual average catch of 132 ton. The present study analyzes the landing composition of this fishery and the population structure of P. gracilis. Carapace lengths (CL) for this species ranged from 35 to 125 mm, and the most frequent sizes were between 60 and 85 mm. The size distribution was approximately normal. This implies that the fishery is composed of several size classes, with annual recruitment to the fishing areas. For the 1989-1990 and 1990-1991 fishing seasons, the mean monthly sizes of males were between 70.18 ± 11.74 and 81.11 ± 6.76 mm CL, whereas females averaged from 73.60 ± 8.95 to 80.28 ± 7.53 mm CL. Power-law relationships between carapace length (CL in mm) and total weight (TW in g) were determined, resulting in the following equations: PT = 0.0021 CL27689 for males and PT = 0.0009 CL³ 0038 for females. During certain periods of the year, males dominated the catch; however, the overall annual male:female ratio was near 1:1.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.39 n.2 20112011-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2011000200004en
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	population structure spiny lobster Panulirus gracilis Gulf of California Mexico
spellingShingle	population structure spiny lobster Panulirus gracilis Gulf of California Mexico Pérez-González,Raúl Catch composition of the spiny lobster Panulirus gracilis (Decapoda: Palinuridae) off the western coast of Mexico
description	The lobster fishery in the Gulf of California and the south-central region of the western coast of Mexico consists of small-scale artisanal activity supported by Panulirus gracilis and P. inflatus, with an annual average catch of 132 ton. The present study analyzes the landing composition of this fishery and the population structure of P. gracilis. Carapace lengths (CL) for this species ranged from 35 to 125 mm, and the most frequent sizes were between 60 and 85 mm. The size distribution was approximately normal. This implies that the fishery is composed of several size classes, with annual recruitment to the fishing areas. For the 1989-1990 and 1990-1991 fishing seasons, the mean monthly sizes of males were between 70.18 ± 11.74 and 81.11 ± 6.76 mm CL, whereas females averaged from 73.60 ± 8.95 to 80.28 ± 7.53 mm CL. Power-law relationships between carapace length (CL in mm) and total weight (TW in g) were determined, resulting in the following equations: PT = 0.0021 CL27689 for males and PT = 0.0009 CL³ 0038 for females. During certain periods of the year, males dominated the catch; however, the overall annual male:female ratio was near 1:1.
author	Pérez-González,Raúl
author_facet	Pérez-González,Raúl
author_sort	Pérez-González,Raúl
title	Catch composition of the spiny lobster Panulirus gracilis (Decapoda: Palinuridae) off the western coast of Mexico
title_short	Catch composition of the spiny lobster Panulirus gracilis (Decapoda: Palinuridae) off the western coast of Mexico
title_full	Catch composition of the spiny lobster Panulirus gracilis (Decapoda: Palinuridae) off the western coast of Mexico
title_fullStr	Catch composition of the spiny lobster Panulirus gracilis (Decapoda: Palinuridae) off the western coast of Mexico
title_full_unstemmed	Catch composition of the spiny lobster Panulirus gracilis (Decapoda: Palinuridae) off the western coast of Mexico
title_sort	catch composition of the spiny lobster panulirus gracilis (decapoda: palinuridae) off the western coast of mexico
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2011000200004
work_keys_str_mv	AT perezgonzalezraul catchcompositionofthespinylobsterpanulirusgracilisdecapodapalinuridaeoffthewesterncoastofmexico
_version_	1714205079415816192

Catch composition of the spiny lobster Panulirus gracilis (Decapoda: Palinuridae) off the western coast of Mexico

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