Detecting Opisthonema libertate (Günther, 1867) phenotypic stocks in northwestern coast of Mexico using geometric morphometrics based on body and otolith shape

ABSTRACT Stock discrimination is essential for biomass population assessment and essential for the fisheries management. The analysis of shape differences in anatomical structures (e.g., body shape, otoliths, scales) has been relevant issue in the study of population structure. We evaluated the hypo...

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Autores principales:	Pérez-Quiñonez,Carlos I., Quiñonez-Velázquez,Casimiro, García-Rodríguez,Francisco J.
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2018
Materias:	Opisthonema libértate stock morphotypes anatomical structure shape fisheries management
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000400779
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spelling	oai:scielo:S0718-560X20180004007792018-11-06Detecting Opisthonema libertate (Günther, 1867) phenotypic stocks in northwestern coast of Mexico using geometric morphometrics based on body and otolith shapePérez-Quiñonez,Carlos I.Quiñonez-Velázquez,CasimiroGarcía-Rodríguez,Francisco J. Opisthonema libértate stock morphotypes anatomical structure shape fisheries management ABSTRACT Stock discrimination is essential for biomass population assessment and essential for the fisheries management. The analysis of shape differences in anatomical structures (e.g., body shape, otoliths, scales) has been relevant issue in the study of population structure. We evaluated the hypothesis on the existence of a stock-structured population of Pacific thread herring Opisthonema libertate in the northwestern coast of Mexico. Geometric morphometric methods were used to analyze body and otolith shape. Samples come from at three commercial fishery-landing sites: Magdalena Bay, Guaymas, and Mazatlan, Mexico. Results based on body and otolith shape support the existence of different morphotypes by location. Body shape allowed better discrimination than otolith shape. The differences observed between the phenotypic stocks suggest seasonal movements, which are linked to the marine current system in this region, particularly to the California Current and the North Equatorial Counter Current.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.46 n.4 20182018-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000400779en10.3856/vol46-issue4-fulltext-15
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Opisthonema libértate stock morphotypes anatomical structure shape fisheries management
spellingShingle	Opisthonema libértate stock morphotypes anatomical structure shape fisheries management Pérez-Quiñonez,Carlos I. Quiñonez-Velázquez,Casimiro García-Rodríguez,Francisco J. Detecting Opisthonema libertate (Günther, 1867) phenotypic stocks in northwestern coast of Mexico using geometric morphometrics based on body and otolith shape
description	ABSTRACT Stock discrimination is essential for biomass population assessment and essential for the fisheries management. The analysis of shape differences in anatomical structures (e.g., body shape, otoliths, scales) has been relevant issue in the study of population structure. We evaluated the hypothesis on the existence of a stock-structured population of Pacific thread herring Opisthonema libertate in the northwestern coast of Mexico. Geometric morphometric methods were used to analyze body and otolith shape. Samples come from at three commercial fishery-landing sites: Magdalena Bay, Guaymas, and Mazatlan, Mexico. Results based on body and otolith shape support the existence of different morphotypes by location. Body shape allowed better discrimination than otolith shape. The differences observed between the phenotypic stocks suggest seasonal movements, which are linked to the marine current system in this region, particularly to the California Current and the North Equatorial Counter Current.
author	Pérez-Quiñonez,Carlos I. Quiñonez-Velázquez,Casimiro García-Rodríguez,Francisco J.
author_facet	Pérez-Quiñonez,Carlos I. Quiñonez-Velázquez,Casimiro García-Rodríguez,Francisco J.
author_sort	Pérez-Quiñonez,Carlos I.
title	Detecting Opisthonema libertate (Günther, 1867) phenotypic stocks in northwestern coast of Mexico using geometric morphometrics based on body and otolith shape
title_short	Detecting Opisthonema libertate (Günther, 1867) phenotypic stocks in northwestern coast of Mexico using geometric morphometrics based on body and otolith shape
title_full	Detecting Opisthonema libertate (Günther, 1867) phenotypic stocks in northwestern coast of Mexico using geometric morphometrics based on body and otolith shape
title_fullStr	Detecting Opisthonema libertate (Günther, 1867) phenotypic stocks in northwestern coast of Mexico using geometric morphometrics based on body and otolith shape
title_full_unstemmed	Detecting Opisthonema libertate (Günther, 1867) phenotypic stocks in northwestern coast of Mexico using geometric morphometrics based on body and otolith shape
title_sort	detecting opisthonema libertate (günther, 1867) phenotypic stocks in northwestern coast of mexico using geometric morphometrics based on body and otolith shape
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000400779
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Detecting Opisthonema libertate (Günther, 1867) phenotypic stocks in northwestern coast of Mexico using geometric morphometrics based on body and otolith shape

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