Population connectivity among geographic variants within the Lutjanidae (Pisces) of the Mexican Pacific coast through fish scale shape recognition

Fish scale shape was used to identify geographic variants among Lutjanidae (Lutjanus argentiventris, L. guttatus and L. peru). Specimens were collected from three different geographic areas, north to south of the tropical Pacific coast of Mexico: Puerto Vallarta (PV), Manzanillo (MA) and Caleta de C...

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Main Authors: Ana L. Ibáñez, Elaine Espino-Barr, Manuel Gallardo-Cabello
Format: Article
Language:English
Published: Consejo Superior de Investigaciones Científicas 2012-12-01
Series:Scientia Marina
Subjects:
Online Access:http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1409
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author Ana L. Ibáñez
Elaine Espino-Barr
Manuel Gallardo-Cabello
author_facet Ana L. Ibáñez
Elaine Espino-Barr
Manuel Gallardo-Cabello
author_sort Ana L. Ibáñez
collection DOAJ
description Fish scale shape was used to identify geographic variants among Lutjanidae (Lutjanus argentiventris, L. guttatus and L. peru). Specimens were collected from three different geographic areas, north to south of the tropical Pacific coast of Mexico: Puerto Vallarta (PV), Manzanillo (MA) and Caleta de Campos (CC). Configuration of landmark coordinates of fish scales were scaled, translated and rotated using generalized procrustes analysis, followed by principal components analysis of resulting shape coordinates. Principal component scores were submitted to cross-validated discriminant analysis to determine the efficacy of scale landmarks for discrimination by geographic variants. This was done with shape and form (shape plus size). PV and MA were recognized as one population different from the CC sampling area. Using only shape (without size), identification rates predicted geographic variant membership much better than chance (91.3%, 70.6% and 85.4% for L. argentiventris, L. guttatus and L. peru, respectively), and taking size into account, classification is somewhat improved (90.6%, 80.1% and 87.5% for L. argentiventris, L. guttatus and L. peru, respectively). Consistency of the two populations for the three species shows non-fortuitous events. Population discrimination confirmed previous genetic studies that show a zoogeographic barrier between the North Equatorial Current and the California Current. The method is non-destructive, fast and less expensive than genetic analysis, thus allowing screening of many individuals for traceability of fish.
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spelling doaj.art-5d45dc74729d4d2cb6a9a18a1d8954642022-12-21T21:24:40ZengConsejo Superior de Investigaciones CientíficasScientia Marina0214-83581886-81342012-12-0176466767510.3989/scimar.03675.09C1389Population connectivity among geographic variants within the Lutjanidae (Pisces) of the Mexican Pacific coast through fish scale shape recognitionAna L. Ibáñez0Elaine Espino-Barr1Manuel Gallardo-Cabello2Universidad Autónoma Metropolitana-Iztapalapa, Departamento de HidrobiologíaInstituto Nacional de la Pesca (INAPESCA), Centro Regional de Investigación Pesquera (CRIP-Manzanillo)Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de MéxicoFish scale shape was used to identify geographic variants among Lutjanidae (Lutjanus argentiventris, L. guttatus and L. peru). Specimens were collected from three different geographic areas, north to south of the tropical Pacific coast of Mexico: Puerto Vallarta (PV), Manzanillo (MA) and Caleta de Campos (CC). Configuration of landmark coordinates of fish scales were scaled, translated and rotated using generalized procrustes analysis, followed by principal components analysis of resulting shape coordinates. Principal component scores were submitted to cross-validated discriminant analysis to determine the efficacy of scale landmarks for discrimination by geographic variants. This was done with shape and form (shape plus size). PV and MA were recognized as one population different from the CC sampling area. Using only shape (without size), identification rates predicted geographic variant membership much better than chance (91.3%, 70.6% and 85.4% for L. argentiventris, L. guttatus and L. peru, respectively), and taking size into account, classification is somewhat improved (90.6%, 80.1% and 87.5% for L. argentiventris, L. guttatus and L. peru, respectively). Consistency of the two populations for the three species shows non-fortuitous events. Population discrimination confirmed previous genetic studies that show a zoogeographic barrier between the North Equatorial Current and the California Current. The method is non-destructive, fast and less expensive than genetic analysis, thus allowing screening of many individuals for traceability of fish.http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1409scale shapepopulation discriminationfish traceabilitylutjanidaemexican pacificgeometric morphometrics
spellingShingle Ana L. Ibáñez
Elaine Espino-Barr
Manuel Gallardo-Cabello
Population connectivity among geographic variants within the Lutjanidae (Pisces) of the Mexican Pacific coast through fish scale shape recognition
Scientia Marina
scale shape
population discrimination
fish traceability
lutjanidae
mexican pacific
geometric morphometrics
title Population connectivity among geographic variants within the Lutjanidae (Pisces) of the Mexican Pacific coast through fish scale shape recognition
title_full Population connectivity among geographic variants within the Lutjanidae (Pisces) of the Mexican Pacific coast through fish scale shape recognition
title_fullStr Population connectivity among geographic variants within the Lutjanidae (Pisces) of the Mexican Pacific coast through fish scale shape recognition
title_full_unstemmed Population connectivity among geographic variants within the Lutjanidae (Pisces) of the Mexican Pacific coast through fish scale shape recognition
title_short Population connectivity among geographic variants within the Lutjanidae (Pisces) of the Mexican Pacific coast through fish scale shape recognition
title_sort population connectivity among geographic variants within the lutjanidae pisces of the mexican pacific coast through fish scale shape recognition
topic scale shape
population discrimination
fish traceability
lutjanidae
mexican pacific
geometric morphometrics
url http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1409
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