Impact of the clam Arca zebra artisanal fishery upon the population of the neogastropod Voluta musica in eastern Venezuela

An important ark clam (Arca zebra) artisanal fishery takes place in the east region of Venezuela. Besides the target species, trawling extracts a significant bycatch of several mollusk species including the gastropod Voluta musica, a threatened species according to the Venezuelan Red List of Endange...

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Autores principales:	Peralta,Ana Carolina, Miloslavich,Patricia, Carranza,Alvar, Bigatti,Gregorio
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2016
Materias:	Arca zebra Voluta musica bycatch endangered species artisanal fishery size structure Caribbean Sea
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2016000400005
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spelling	oai:scielo:S0718-560X20160004000052016-10-28Impact of the clam Arca zebra artisanal fishery upon the population of the neogastropod Voluta musica in eastern VenezuelaPeralta,Ana CarolinaMiloslavich,PatriciaCarranza,AlvarBigatti,Gregorio Arca zebra Voluta musica bycatch endangered species artisanal fishery size structure Caribbean Sea An important ark clam (Arca zebra) artisanal fishery takes place in the east region of Venezuela. Besides the target species, trawling extracts a significant bycatch of several mollusk species including the gastropod Voluta musica, a threatened species according to the Venezuelan Red List of Endangered Species. In this paper we evaluate: 1) the composition of mollusk species in the bycatch, 2) the number of individuals of V. musica caught as bycatch and, 3) the abundance and size structure of the exploited population. Each fishing night, about 27,830 m² are trawled by each boat extracting on the average 607 kg of A. zebra meat and 19 kg of V. musica (whole shelled animal). This fishery activity potentially captures ~30,000 kg of ark clam meat and 922 kg of V. musica in one week (~95 snails/fishing night/boat). The size structure of the V. musica population at the ark clam bed is significantly smaller than in other nearby sites not impacted by trawling fishing activities. Non-targeted species extracted in the bycatch but consumed by the local inhabitants include the gastropods Chicoreus brevifrons, Phyllonotus margaritensis, P. pomum, Fasciolaria tulipa, Strombus pugilis, a few Trochidae species, and the bivalves Pinctada imbricata, Spondylus americanus, Anadarafloridana, A. notabilis, and Trachicardium muricatum. Individuals of V. musica along with several invertebrates are discarded. We recommend that V. musica should not be neglected as a conservation target, and despite that A. zebra fisheries are considered "artisanal", that more strict regulations should be established on it.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.44 n.4 20162016-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2016000400005en10.3856/vol44-issue4-fulltext-5
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Arca zebra Voluta musica bycatch endangered species artisanal fishery size structure Caribbean Sea
spellingShingle	Arca zebra Voluta musica bycatch endangered species artisanal fishery size structure Caribbean Sea Peralta,Ana Carolina Miloslavich,Patricia Carranza,Alvar Bigatti,Gregorio Impact of the clam Arca zebra artisanal fishery upon the population of the neogastropod Voluta musica in eastern Venezuela
description	An important ark clam (Arca zebra) artisanal fishery takes place in the east region of Venezuela. Besides the target species, trawling extracts a significant bycatch of several mollusk species including the gastropod Voluta musica, a threatened species according to the Venezuelan Red List of Endangered Species. In this paper we evaluate: 1) the composition of mollusk species in the bycatch, 2) the number of individuals of V. musica caught as bycatch and, 3) the abundance and size structure of the exploited population. Each fishing night, about 27,830 m² are trawled by each boat extracting on the average 607 kg of A. zebra meat and 19 kg of V. musica (whole shelled animal). This fishery activity potentially captures ~30,000 kg of ark clam meat and 922 kg of V. musica in one week (~95 snails/fishing night/boat). The size structure of the V. musica population at the ark clam bed is significantly smaller than in other nearby sites not impacted by trawling fishing activities. Non-targeted species extracted in the bycatch but consumed by the local inhabitants include the gastropods Chicoreus brevifrons, Phyllonotus margaritensis, P. pomum, Fasciolaria tulipa, Strombus pugilis, a few Trochidae species, and the bivalves Pinctada imbricata, Spondylus americanus, Anadarafloridana, A. notabilis, and Trachicardium muricatum. Individuals of V. musica along with several invertebrates are discarded. We recommend that V. musica should not be neglected as a conservation target, and despite that A. zebra fisheries are considered "artisanal", that more strict regulations should be established on it.
author	Peralta,Ana Carolina Miloslavich,Patricia Carranza,Alvar Bigatti,Gregorio
author_facet	Peralta,Ana Carolina Miloslavich,Patricia Carranza,Alvar Bigatti,Gregorio
author_sort	Peralta,Ana Carolina
title	Impact of the clam Arca zebra artisanal fishery upon the population of the neogastropod Voluta musica in eastern Venezuela
title_short	Impact of the clam Arca zebra artisanal fishery upon the population of the neogastropod Voluta musica in eastern Venezuela
title_full	Impact of the clam Arca zebra artisanal fishery upon the population of the neogastropod Voluta musica in eastern Venezuela
title_fullStr	Impact of the clam Arca zebra artisanal fishery upon the population of the neogastropod Voluta musica in eastern Venezuela
title_full_unstemmed	Impact of the clam Arca zebra artisanal fishery upon the population of the neogastropod Voluta musica in eastern Venezuela
title_sort	impact of the clam arca zebra artisanal fishery upon the population of the neogastropod voluta musica in eastern venezuela
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2016000400005
work_keys_str_mv	AT peraltaanacarolina impactoftheclamarcazebraartisanalfisheryuponthepopulationoftheneogastropodvolutamusicaineasternvenezuela AT miloslavichpatricia impactoftheclamarcazebraartisanalfisheryuponthepopulationoftheneogastropodvolutamusicaineasternvenezuela AT carranzaalvar impactoftheclamarcazebraartisanalfisheryuponthepopulationoftheneogastropodvolutamusicaineasternvenezuela AT bigattigregorio impactoftheclamarcazebraartisanalfisheryuponthepopulationoftheneogastropodvolutamusicaineasternvenezuela
_version_	1714205167651389440

Impact of the clam Arca zebra artisanal fishery upon the population of the neogastropod Voluta musica in eastern Venezuela

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