Otolith chemical composition as a useful tool for sciaenid stock discrimination in the south-western Atlantic

Striped weakfish (Cynoscion guatucupa) and whitemouth croaker (Micropogonias furnieri) are important commercial and recreational species found in abundance along the South American Atlantic coast. In recent years otolith chemical composition has been used as a tool for identifying fish stocks for se...

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Autor principal:	Volpedo, Alejandra
Publicado:	2006
Materias:	Cynoscion guatucupa Micropogonias furnieri Otolith chemical composition Stock discrimination chemical composition fish otolith stock assessment stock identification Atlantic Ocean Atlantic Ocean (Southwest) Argyrosomus macrophthalmus Sciaenidae
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02148358_v70_n2_p325_Volpedo http://hdl.handle.net/20.500.12110/paper_02148358_v70_n2_p325_Volpedo
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_02148358_v70_n2_p325_Volpedo
record_format	dspace
spelling	paper:paper_02148358_v70_n2_p325_Volpedo2023-06-08T15:20:55Z Otolith chemical composition as a useful tool for sciaenid stock discrimination in the south-western Atlantic Volpedo, Alejandra Cynoscion guatucupa Micropogonias furnieri Otolith chemical composition Stock discrimination chemical composition fish otolith stock assessment stock identification Atlantic Ocean Atlantic Ocean (Southwest) Argyrosomus macrophthalmus Cynoscion guatucupa Micropogonias furnieri Sciaenidae Striped weakfish (Cynoscion guatucupa) and whitemouth croaker (Micropogonias furnieri) are important commercial and recreational species found in abundance along the South American Atlantic coast. In recent years otolith chemical composition has been used as a tool for identifying fish stocks for several species. The chemical composition of C. guatucupa and M. furnieri otoliths was determined by inductively coupled plasma-optical emission spectrometry (ICP-OES) in samples from coastal sites (Partido de La Costa, Mar del Plata and San Blás Bay). Significant differences in the ratios of Mg/Ca, Mn/Ca and Sr/Ca for C. guatucupa otoliths and Cd/Ca, Cu/Ca, Mg/Ca, Sr/Ca and Zn/Ca for M. furnieri otoliths suggest the existence of two different fish stocks, one originating in the north (including Samborombón Bay and Partido de La Costa fisheries) and another originating in the south (including "El Rincón" and San Blás fisheries). These results agree with previous studies on the same species using different methodologies. These stocks may be separated by an oceanographic barrier, the "Frente El Rincón". Otolith chemical composition has not been previously used in South America for identifying fish stocks and may be a simple, quick and useful tool for the sustainable exploitation and management of commercial species. Fil:Volpedo, A.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2006 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02148358_v70_n2_p325_Volpedo http://hdl.handle.net/20.500.12110/paper_02148358_v70_n2_p325_Volpedo
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Cynoscion guatucupa Micropogonias furnieri Otolith chemical composition Stock discrimination chemical composition fish otolith stock assessment stock identification Atlantic Ocean Atlantic Ocean (Southwest) Argyrosomus macrophthalmus Cynoscion guatucupa Micropogonias furnieri Sciaenidae
spellingShingle	Cynoscion guatucupa Micropogonias furnieri Otolith chemical composition Stock discrimination chemical composition fish otolith stock assessment stock identification Atlantic Ocean Atlantic Ocean (Southwest) Argyrosomus macrophthalmus Cynoscion guatucupa Micropogonias furnieri Sciaenidae Volpedo, Alejandra Otolith chemical composition as a useful tool for sciaenid stock discrimination in the south-western Atlantic
topic_facet	Cynoscion guatucupa Micropogonias furnieri Otolith chemical composition Stock discrimination chemical composition fish otolith stock assessment stock identification Atlantic Ocean Atlantic Ocean (Southwest) Argyrosomus macrophthalmus Cynoscion guatucupa Micropogonias furnieri Sciaenidae
description	Striped weakfish (Cynoscion guatucupa) and whitemouth croaker (Micropogonias furnieri) are important commercial and recreational species found in abundance along the South American Atlantic coast. In recent years otolith chemical composition has been used as a tool for identifying fish stocks for several species. The chemical composition of C. guatucupa and M. furnieri otoliths was determined by inductively coupled plasma-optical emission spectrometry (ICP-OES) in samples from coastal sites (Partido de La Costa, Mar del Plata and San Blás Bay). Significant differences in the ratios of Mg/Ca, Mn/Ca and Sr/Ca for C. guatucupa otoliths and Cd/Ca, Cu/Ca, Mg/Ca, Sr/Ca and Zn/Ca for M. furnieri otoliths suggest the existence of two different fish stocks, one originating in the north (including Samborombón Bay and Partido de La Costa fisheries) and another originating in the south (including "El Rincón" and San Blás fisheries). These results agree with previous studies on the same species using different methodologies. These stocks may be separated by an oceanographic barrier, the "Frente El Rincón". Otolith chemical composition has not been previously used in South America for identifying fish stocks and may be a simple, quick and useful tool for the sustainable exploitation and management of commercial species.
author	Volpedo, Alejandra
author_facet	Volpedo, Alejandra
author_sort	Volpedo, Alejandra
title	Otolith chemical composition as a useful tool for sciaenid stock discrimination in the south-western Atlantic
title_short	Otolith chemical composition as a useful tool for sciaenid stock discrimination in the south-western Atlantic
title_full	Otolith chemical composition as a useful tool for sciaenid stock discrimination in the south-western Atlantic
title_fullStr	Otolith chemical composition as a useful tool for sciaenid stock discrimination in the south-western Atlantic
title_full_unstemmed	Otolith chemical composition as a useful tool for sciaenid stock discrimination in the south-western Atlantic
title_sort	otolith chemical composition as a useful tool for sciaenid stock discrimination in the south-western atlantic
publishDate	2006
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02148358_v70_n2_p325_Volpedo http://hdl.handle.net/20.500.12110/paper_02148358_v70_n2_p325_Volpedo
work_keys_str_mv	AT volpedoalejandra otolithchemicalcompositionasausefultoolforsciaenidstockdiscriminationinthesouthwesternatlantic
_version_	1768544129674903552

Otolith chemical composition as a useful tool for sciaenid stock discrimination in the south-western Atlantic

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