Mitochondrial DNA evidences reflect an incipient population structure in Atlantic goliath grouper (Epinephelus itajara, Epinephelidae) in Brazil
The Atlantic goliath grouper is a critically endangered species that inhabits estuarine and reef environments and is threatened primarily by fishing activities and habitat destruction. Despite the urgent need for protection, its genetic conservation status remains unknown. The aim of the present stu...
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Consejo Superior de Investigaciones Científicas
2015-12-01
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Series: | Scientia Marina |
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Online Access: | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1600 |
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Article |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Júnio S. Damasceno Raquel Siccha-Ramirez Millke J.A. Morales Claudio Oliveira Rodrigo A. Torres Edvaldo N. Costa Gláucia C. Silva-Oliveira Marcelo Vallinoto Leonardo F. Machado Vander C. Tosta Ana Paula C. Farro Maurício Hostim-Silva |
spellingShingle |
Júnio S. Damasceno Raquel Siccha-Ramirez Millke J.A. Morales Claudio Oliveira Rodrigo A. Torres Edvaldo N. Costa Gláucia C. Silva-Oliveira Marcelo Vallinoto Leonardo F. Machado Vander C. Tosta Ana Paula C. Farro Maurício Hostim-Silva Mitochondrial DNA evidences reflect an incipient population structure in Atlantic goliath grouper (Epinephelus itajara, Epinephelidae) in Brazil Scientia Marina critically endangered species gene flow genetic diversity marine fish western atlantic ocean |
author_facet |
Júnio S. Damasceno Raquel Siccha-Ramirez Millke J.A. Morales Claudio Oliveira Rodrigo A. Torres Edvaldo N. Costa Gláucia C. Silva-Oliveira Marcelo Vallinoto Leonardo F. Machado Vander C. Tosta Ana Paula C. Farro Maurício Hostim-Silva |
author_sort |
Júnio S. Damasceno |
title |
Mitochondrial DNA evidences reflect an incipient population structure in Atlantic goliath grouper (Epinephelus itajara, Epinephelidae) in Brazil |
title_short |
Mitochondrial DNA evidences reflect an incipient population structure in Atlantic goliath grouper (Epinephelus itajara, Epinephelidae) in Brazil |
title_full |
Mitochondrial DNA evidences reflect an incipient population structure in Atlantic goliath grouper (Epinephelus itajara, Epinephelidae) in Brazil |
title_fullStr |
Mitochondrial DNA evidences reflect an incipient population structure in Atlantic goliath grouper (Epinephelus itajara, Epinephelidae) in Brazil |
title_full_unstemmed |
Mitochondrial DNA evidences reflect an incipient population structure in Atlantic goliath grouper (Epinephelus itajara, Epinephelidae) in Brazil |
title_sort |
mitochondrial dna evidences reflect an incipient population structure in atlantic goliath grouper (epinephelus itajara, epinephelidae) in brazil |
publisher |
Consejo Superior de Investigaciones Científicas |
series |
Scientia Marina |
issn |
0214-8358 1886-8134 |
publishDate |
2015-12-01 |
description |
The Atlantic goliath grouper is a critically endangered species that inhabits estuarine and reef environments and is threatened primarily by fishing activities and habitat destruction. Despite the urgent need for protection, its genetic conservation status remains unknown. The aim of the present study was to evaluate the gene flow among the populations of the species along the coast of Brazil based on the control region of the mitochondrial DNA. The results indicate low haplotype diversity (0.40-0.86) and very low nucleotide diversity (0.1-0.5%). They also show that the genetic diversity of the species varies considerably along the coast and that this finding may be especially important for the identification of priority areas for its conservation. The population analyses indicate a low but significant degree of genetic structuring (ΦST =0.111), probably due to the occurrence of rare haplotypes at some locations, although the genetic differentiation between sites was not correlated with geographic distance (r=0.0501; p=0.7719), and the shared haplotypes indicate that gene flow occurs among all locations along the Brazilian coast. The results of the pairwise FST indicate a high degree of genetic differentiation between locations. The incipient population structuring detected in the present study is not related systematically to the geological or physical features of the Brazilian coast. The complex interaction of fluctuations in sea level, marine currents, and the reproductive characteristics of the species hampers the identification of the specific role of each of these processes in the gene flow dynamics of the population units of the Atlantic goliath grouper. The low overall levels of genetic diversity, the pairwise FST values and the significant population structuring among groups (ΦCT) identified in the present study all reinforce the critically endangered status of the species and are inconsistent with the presence of a single, panmictic population of groupers on the Brazilian coast. The results of this study suggest that, though it may be incipient, the observed genetic structuring must be taken into account in order to prevent potential problems, such as outbreeding depression, in the management of wild stocks. |
topic |
critically endangered species gene flow genetic diversity marine fish western atlantic ocean |
url |
http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1600 |
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doaj-46a3ea34ab654dc280168cd4d64a28dd2021-05-05T13:49:35ZengConsejo Superior de Investigaciones CientíficasScientia Marina0214-83581886-81342015-12-0179441942910.3989/scimar.04203.20A1571Mitochondrial DNA evidences reflect an incipient population structure in Atlantic goliath grouper (Epinephelus itajara, Epinephelidae) in BrazilJúnio S. Damasceno0Raquel Siccha-Ramirez1Millke J.A. Morales2Claudio Oliveira3Rodrigo A. Torres4Edvaldo N. Costa5Gláucia C. Silva-Oliveira6Marcelo Vallinoto7Leonardo F. Machado8Vander C. Tosta9Ana Paula C. Farro10Maurício Hostim-Silva11Programa de Pós-graduação em Oceanografia Ambiental, Departamento de Oceanografia e Ecologia, Base Oceanográfica, UFES - Universidade Federal do Espírito Santo - Laboratório de Genética da Conservação, Programa de Pós-graduação em Zoologia de Vertebrados, PUCMINAS - Pontifícia Universidade Católica de Minas GeraisLaboratório de Biologia e Genética de Peixes, Departamento de Morfologia, Instituto de Biociências de Botucatu, UNESP, Universidade Estadual Paulista - Laboratorio Costero de Tumbes, Instituto del Mar del Perú, IMARPELaboratório de Biologia e Genética de Peixes, Departamento de Morfologia, Instituto de Biociências de Botucatu, UNESP, Universidade Estadual PaulistaLaboratório de Biologia e Genética de Peixes, Departamento de Morfologia, Instituto de Biociências de Botucatu, UNESP, Universidade Estadual PaulistaLaboratório de Genômica Evolutiva e Ambiental, Departamento de Zoologia, Universidade Federal de PernambucoCentro de Pesquisa e Conservação da Biodiversidade do Nordeste, CEPENE/ICMBioLaboratório de Evolução, Instituto de Estudos Costeiros, Campus Universitário de Bragança, UFPA, Universidade Federal do ParáLaboratório de Evolução, Instituto de Estudos Costeiros, Campus Universitário de Bragança, UFPA, Universidade Federal do Pará - InBIO/CIBIO - Centro de Investigação em Biodiversidade e Recursos Genéticos, Campus Agrário de Vairão, Universidade do PortoDepartamento de Ciências Agrárias e Biológicas, UFES, Universidade Federal do Espírito SantoDepartamento de Ciências Agrárias e Biológicas, UFES, Universidade Federal do Espírito SantoDepartamento de Ciências Agrárias e Biológicas, UFES, Universidade Federal do Espírito SantoDepartamento de Ciências Agrárias e Biológicas, UFES, Universidade Federal do Espírito SantoThe Atlantic goliath grouper is a critically endangered species that inhabits estuarine and reef environments and is threatened primarily by fishing activities and habitat destruction. Despite the urgent need for protection, its genetic conservation status remains unknown. The aim of the present study was to evaluate the gene flow among the populations of the species along the coast of Brazil based on the control region of the mitochondrial DNA. The results indicate low haplotype diversity (0.40-0.86) and very low nucleotide diversity (0.1-0.5%). They also show that the genetic diversity of the species varies considerably along the coast and that this finding may be especially important for the identification of priority areas for its conservation. The population analyses indicate a low but significant degree of genetic structuring (ΦST =0.111), probably due to the occurrence of rare haplotypes at some locations, although the genetic differentiation between sites was not correlated with geographic distance (r=0.0501; p=0.7719), and the shared haplotypes indicate that gene flow occurs among all locations along the Brazilian coast. The results of the pairwise FST indicate a high degree of genetic differentiation between locations. The incipient population structuring detected in the present study is not related systematically to the geological or physical features of the Brazilian coast. The complex interaction of fluctuations in sea level, marine currents, and the reproductive characteristics of the species hampers the identification of the specific role of each of these processes in the gene flow dynamics of the population units of the Atlantic goliath grouper. The low overall levels of genetic diversity, the pairwise FST values and the significant population structuring among groups (ΦCT) identified in the present study all reinforce the critically endangered status of the species and are inconsistent with the presence of a single, panmictic population of groupers on the Brazilian coast. The results of this study suggest that, though it may be incipient, the observed genetic structuring must be taken into account in order to prevent potential problems, such as outbreeding depression, in the management of wild stocks.http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1600critically endangered speciesgene flowgenetic diversitymarine fishwestern atlantic ocean |