Assessment of an artisanal shrimp fishery of Litopenaeus vannamei in a lagoon-estuarine system based on the concept of maximum sustainable yield

The apparent simplicity of the concept of the surplus production model has promoted its wide application among fishery managers responsible for the exploitation of offshore shrimp stocks. However, no attempts have been made to utilize it for the assessment of shrimp populations exploited in coastal...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Rivera-Velázquez,Gustavo, Soto,Luis A, Salgado-Ugarte,Isaía H, Naranjo,Eduardo J
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2009
Materias:	Coastal lagoon estuary CPUE overexploitation
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572009000300010
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0718-19572009000300010
record_format	dspace
spelling	oai:scielo:S0718-195720090003000102010-03-31Assessment of an artisanal shrimp fishery of Litopenaeus vannamei in a lagoon-estuarine system based on the concept of maximum sustainable yieldRivera-Velázquez,GustavoSoto,Luis ASalgado-Ugarte,Isaía HNaranjo,Eduardo J Coastal lagoon estuary CPUE overexploitation The apparent simplicity of the concept of the surplus production model has promoted its wide application among fishery managers responsible for the exploitation of offshore shrimp stocks. However, no attempts have been made to utilize it for the assessment of shrimp populations exploited in coastal lagoons-estuarine systems. These are artisanal fisheries whose structure includes small boats and fixed fishing traps. In this study the concept of maximum sustainable yield was used (MSY) as a base for the evaluation of the shrimp fishery (Litopenaeus vannamei) in the lagoon-estuarine system Carretas-Pereyra, Gulf of Tehuantepec, Mexico. A dynamic biomass model was applied to analyze catch per unit effort (CPUE) of 1983-2006. In the commercial exploitation of the shrimp stock two main types of fishing methods are employed: stationary enclosures and cast nets. Maximum shrimp production (806 t) was recorded in 1987, followed by a sustained declining trend of CPUE thereafter. Even though fishing effort remained constant since 1995, the shrimp landings maintained a declining trend. Total shrimp production recorded from 2000 fell below the estimated level (mean = 58%) of maximum sustainable yield (MSY) at 248,393 kg yr-1. Observed effort (505 fishing vessels) was 45% over the estimated effort at MSY (E MSY = 349 vessels). These results reveal conditions of overexploitation of the shrimp stock, a declining pattern in its abundance, and a serious risk of an economic collapse of the shrimp fishery in the study area.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.44 n.3 20092009-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572009000300010en10.4067/S0718-19572009000300010
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Coastal lagoon estuary CPUE overexploitation
spellingShingle	Coastal lagoon estuary CPUE overexploitation Rivera-Velázquez,Gustavo Soto,Luis A Salgado-Ugarte,Isaía H Naranjo,Eduardo J Assessment of an artisanal shrimp fishery of Litopenaeus vannamei in a lagoon-estuarine system based on the concept of maximum sustainable yield
description	The apparent simplicity of the concept of the surplus production model has promoted its wide application among fishery managers responsible for the exploitation of offshore shrimp stocks. However, no attempts have been made to utilize it for the assessment of shrimp populations exploited in coastal lagoons-estuarine systems. These are artisanal fisheries whose structure includes small boats and fixed fishing traps. In this study the concept of maximum sustainable yield was used (MSY) as a base for the evaluation of the shrimp fishery (Litopenaeus vannamei) in the lagoon-estuarine system Carretas-Pereyra, Gulf of Tehuantepec, Mexico. A dynamic biomass model was applied to analyze catch per unit effort (CPUE) of 1983-2006. In the commercial exploitation of the shrimp stock two main types of fishing methods are employed: stationary enclosures and cast nets. Maximum shrimp production (806 t) was recorded in 1987, followed by a sustained declining trend of CPUE thereafter. Even though fishing effort remained constant since 1995, the shrimp landings maintained a declining trend. Total shrimp production recorded from 2000 fell below the estimated level (mean = 58%) of maximum sustainable yield (MSY) at 248,393 kg yr-1. Observed effort (505 fishing vessels) was 45% over the estimated effort at MSY (E MSY = 349 vessels). These results reveal conditions of overexploitation of the shrimp stock, a declining pattern in its abundance, and a serious risk of an economic collapse of the shrimp fishery in the study area.
author	Rivera-Velázquez,Gustavo Soto,Luis A Salgado-Ugarte,Isaía H Naranjo,Eduardo J
author_facet	Rivera-Velázquez,Gustavo Soto,Luis A Salgado-Ugarte,Isaía H Naranjo,Eduardo J
author_sort	Rivera-Velázquez,Gustavo
title	Assessment of an artisanal shrimp fishery of Litopenaeus vannamei in a lagoon-estuarine system based on the concept of maximum sustainable yield
title_short	Assessment of an artisanal shrimp fishery of Litopenaeus vannamei in a lagoon-estuarine system based on the concept of maximum sustainable yield
title_full	Assessment of an artisanal shrimp fishery of Litopenaeus vannamei in a lagoon-estuarine system based on the concept of maximum sustainable yield
title_fullStr	Assessment of an artisanal shrimp fishery of Litopenaeus vannamei in a lagoon-estuarine system based on the concept of maximum sustainable yield
title_full_unstemmed	Assessment of an artisanal shrimp fishery of Litopenaeus vannamei in a lagoon-estuarine system based on the concept of maximum sustainable yield
title_sort	assessment of an artisanal shrimp fishery of litopenaeus vannamei in a lagoon-estuarine system based on the concept of maximum sustainable yield
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572009000300010
work_keys_str_mv	AT riveravelazquezgustavo assessmentofanartisanalshrimpfisheryoflitopenaeusvannameiinalagoonestuarinesystembasedontheconceptofmaximumsustainableyield AT sotoluisa assessmentofanartisanalshrimpfisheryoflitopenaeusvannameiinalagoonestuarinesystembasedontheconceptofmaximumsustainableyield AT salgadougarteisaiah assessmentofanartisanalshrimpfisheryoflitopenaeusvannameiinalagoonestuarinesystembasedontheconceptofmaximumsustainableyield AT naranjoeduardoj assessmentofanartisanalshrimpfisheryoflitopenaeusvannameiinalagoonestuarinesystembasedontheconceptofmaximumsustainableyield
_version_	1714202288533274624

Assessment of an artisanal shrimp fishery of Litopenaeus vannamei in a lagoon-estuarine system based on the concept of maximum sustainable yield

Ejemplares similares