Genetic analysis of Lutjanus synagris populations in the Colombian Caribbean

Species of the family Lutjanidae constitute an important fishery resource in tropical marine areas worldwide and are intensely exploited because of their excellent commercial value and quality. In Colombia, the lane snapper Lutjanus synagris is considered vulnerable to overfishing due to its biologi...

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Main Authors: Landínez-García, RM, Ospina-Guerrero, SP, Rodríguez-Castro, DJ, Arango-Isaza, RE, Márquez-Fernández, EJ
Format: info:eu-repo/semantics/article
Published: Iniversidad Autónoma de Baja California 2009
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Online Access:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1240
https://repositorioinstitucional.uabc.mx/handle/20.500.12930/7421
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id repositorioinstitucional-20.500.12930-7421
record_format dspace
institution Repositorio Institucional
collection DSpace
topic population genetics
microsatellites
AMOVA
SAMOVA
fish stock
genética de poblaciones
microsatélites
AMOVA
SAMOVA
stocks pesqueros
spellingShingle population genetics
microsatellites
AMOVA
SAMOVA
fish stock
genética de poblaciones
microsatélites
AMOVA
SAMOVA
stocks pesqueros
Landínez-García, RM
Ospina-Guerrero, SP
Rodríguez-Castro, DJ
Arango-Isaza, RE
Márquez-Fernández, EJ
Genetic analysis of Lutjanus synagris populations in the Colombian Caribbean
description Species of the family Lutjanidae constitute an important fishery resource in tropical marine areas worldwide and are intensely exploited because of their excellent commercial value and quality. In Colombia, the lane snapper Lutjanus synagris is considered vulnerable to overfishing due to its biological characteristics, habitat deterioration, and historical decrease in catch rates in regions where it used to comprise the highest percentage of the landings. In order to generate more biological information needed to make effective fishery management decisions and policies, the genetic structure of L. synagris was analyzed in three areas of the Colombian Caribbean (Santa Marta, Rosario Islands, and Capurganá) using microsatellite-type molecular markers. Fourteen primers reported for two phylogenetically close species (Rhomboplites aurorubens and Lutjanus campechanus) were analyzed, eight of which were polymorphic and informative for the species under study. All loci were found to depart from Hardy-Weinberg equilibrium due to marked heterozygote deficiency in all the populations studied. Both the analysis of molecular variance (total population ΦST = 0.006, P = 0.022) and spatial analysis of molecular variance showed a slight statistically significant population structure (best FCT = 0.003, ΦST = 0.007, P = 0.0001) that separated the Capurganá population from those of the other areas with no evidence of isolation by distance (Mantel test Rxy = 0.023, P = 0.057). The results suggest that the life history of the species and the regional oceanographic conditions play an important role in determining the genetic structure and the existence of two different genetic stocks that should be managed according to their population structure.
format info:eu-repo/semantics/article
author Landínez-García, RM
Ospina-Guerrero, SP
Rodríguez-Castro, DJ
Arango-Isaza, RE
Márquez-Fernández, EJ
author_facet Landínez-García, RM
Ospina-Guerrero, SP
Rodríguez-Castro, DJ
Arango-Isaza, RE
Márquez-Fernández, EJ
author_sort Landínez-García, RM
title Genetic analysis of Lutjanus synagris populations in the Colombian Caribbean
title_short Genetic analysis of Lutjanus synagris populations in the Colombian Caribbean
title_full Genetic analysis of Lutjanus synagris populations in the Colombian Caribbean
title_fullStr Genetic analysis of Lutjanus synagris populations in the Colombian Caribbean
title_full_unstemmed Genetic analysis of Lutjanus synagris populations in the Colombian Caribbean
title_sort genetic analysis of lutjanus synagris populations in the colombian caribbean
publisher Iniversidad Autónoma de Baja California
publishDate 2009
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1240
https://repositorioinstitucional.uabc.mx/handle/20.500.12930/7421
_version_ 1715745759296487424
spelling repositorioinstitucional-20.500.12930-74212021-06-03T03:55:16Z Genetic analysis of Lutjanus synagris populations in the Colombian Caribbean Análisis genético de Lutjanus synagris en poblaciones del Caribe Colombiano Landínez-García, RM Ospina-Guerrero, SP Rodríguez-Castro, DJ Arango-Isaza, RE Márquez-Fernández, EJ population genetics microsatellites AMOVA SAMOVA fish stock genética de poblaciones microsatélites AMOVA SAMOVA stocks pesqueros Species of the family Lutjanidae constitute an important fishery resource in tropical marine areas worldwide and are intensely exploited because of their excellent commercial value and quality. In Colombia, the lane snapper Lutjanus synagris is considered vulnerable to overfishing due to its biological characteristics, habitat deterioration, and historical decrease in catch rates in regions where it used to comprise the highest percentage of the landings. In order to generate more biological information needed to make effective fishery management decisions and policies, the genetic structure of L. synagris was analyzed in three areas of the Colombian Caribbean (Santa Marta, Rosario Islands, and Capurganá) using microsatellite-type molecular markers. Fourteen primers reported for two phylogenetically close species (Rhomboplites aurorubens and Lutjanus campechanus) were analyzed, eight of which were polymorphic and informative for the species under study. All loci were found to depart from Hardy-Weinberg equilibrium due to marked heterozygote deficiency in all the populations studied. Both the analysis of molecular variance (total population ΦST = 0.006, P = 0.022) and spatial analysis of molecular variance showed a slight statistically significant population structure (best FCT = 0.003, ΦST = 0.007, P = 0.0001) that separated the Capurganá population from those of the other areas with no evidence of isolation by distance (Mantel test Rxy = 0.023, P = 0.057). The results suggest that the life history of the species and the regional oceanographic conditions play an important role in determining the genetic structure and the existence of two different genetic stocks that should be managed according to their population structure. Las especies de la familia Lutjanidae constituyen un importante recurso pesquero alrededor de las zonas marinas tropicales en el mundo y son explotadas intensivamente por su excelente calidad y valor comercial. En Colombia, Lutjanus synagris o pargo rayado, podría considerarse vulnerable a la sobreexplotación debido a sus características biológicas, al deterioro de su hábitat y a la disminución histórica de su captura en regiones donde representaba el mayor porcentaje de la pesca. Con el ánimo de generar información biológica que permita apoyar decisiones y políticas más adecuadas de manejo pesquero se analizó la estructura genética de L. synagris en tres regiones del Caribe Colombiano (Santa Marta, Islas del Rosario y Capurganá) mediante marcadores moleculares tipo microsatélite. Para tal fin se evaluaron 14 cebadores reportados para dos especies filogenéticamente cercanas (Rhomboplites aurorubens y Lutjanus campechanus) de los cuales ocho fueron polimórficos e informativos para la especie en estudio. Se encontró que todos los loci estaban muy alejados del equilibrio de Hardy-Weinberg debido a una marcada deficiencia de heterocigotos observada en todas las poblaciones estudiadas. Tanto el análisis de varianza molecular (ΦST en la población total = 0.006, P = 0.022) como el análisis espacial de varianza molecular mostraron una leve estructuración poblacional estadísticamente significativa (mejor FCT = 0.003, ΦST = 0.007, P = 0.0001) que separó la población de Capurganá de las demás regiones sin evidencia de aislamiento por distancia (Prueba de Mantel Rxy = 0.023, P = 0.057). Los resultados sugieren un papel importante de la historia de vida de la especie y las condiciones oceanográficas predominantes en dicha región en la determinación de la estructura genética y la existencia de dos stocks genéticos distintos que deben ser manejados de acuerdo a su estructura poblacional. 2009-12-08 2021-06-03T03:55:16Z 2021-06-03T03:55:16Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1240 10.7773/cm.v35i4.1240 https://repositorioinstitucional.uabc.mx/handle/20.500.12930/7421 #PLACEHOLDER_PARENT_METADATA_VALUE# https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1240/1780 none application/pdf Iniversidad Autónoma de Baja California Ciencias Marinas; Vol. 35 No. 4 (2009); 321-331 Ciencias Marinas; Vol. 35 Núm. 4 (2009); 321-331 2395-9053 0185-3880