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Genetic structure in the blue and red shrimp Aristeus antennatus and the role played by hydrographical and oceanographical barriers

The blue and red shrimp Aristeus antenantus supports an important commercial fishery in the Western Mediterranean, adjacent Atlantic waters and Mozambique Channel (western Indian Ocean). This study investigates its genetic structure by examining a total of 506 individuals from Mediterranean, Atlantic and Indian Ocean locations. In order to identify putative genetic stocks, sequences from 16S rDNA (546 bp) and COI (514 bp) genes were used. Genetic diversity, estimated by haplotypic and nucleotidic diversity, was lower in the Western Mediterranean than in samples from other locations. The high haplotypic diversity of the Eastern Mediterranean, Atlantic and Indian Ocean samples reflects the occurrence of a number of private haplotypes, which are also responsible for significant genetic divergence between these samples and the Western Mediterranean ones. The analysis of mismatch distributions, neutrality tests, and star-like patterns present in the network of haplotypes provided consistent inference of past population expansion in the Western Mediterranean, Atlantic and Mozambique Channel regions. Our study provides the first evidence of genetic structuring in A. antennatus across its distributional range

The authors thank M. Arculeo, A. Carbonell, M. Cortey, L. Hidalgo, C.- Y. Politou, I. Sobrino and A. Souplet for their help in sample collection; and C. Martinez and R. Patellani for their assistance in the laboratory. This work was supported by grants to M.I.R. by the Spanish Ministerio de Educación y Ciencia (CTM2006-00785) and Ministerio de Ciencia e Innovación (AGL2009-09228). M.V.F. benefited from a predoctoral fellowship from the Ministerio de Educación y Ciencia (BES-2007-15865)

© Marine Ecology Progress Series, 2011, vol. 421, p. 163-171

Inter Research

Author: Fernández Hernández, Maria Victoria
Heras Mena, Sandra
Maltagliati, Ferruccio
Turco, Aldo
Roldán Borassi, María Inés
Date: 2011 January 26
Abstract: The blue and red shrimp Aristeus antenantus supports an important commercial fishery in the Western Mediterranean, adjacent Atlantic waters and Mozambique Channel (western Indian Ocean). This study investigates its genetic structure by examining a total of 506 individuals from Mediterranean, Atlantic and Indian Ocean locations. In order to identify putative genetic stocks, sequences from 16S rDNA (546 bp) and COI (514 bp) genes were used. Genetic diversity, estimated by haplotypic and nucleotidic diversity, was lower in the Western Mediterranean than in samples from other locations. The high haplotypic diversity of the Eastern Mediterranean, Atlantic and Indian Ocean samples reflects the occurrence of a number of private haplotypes, which are also responsible for significant genetic divergence between these samples and the Western Mediterranean ones. The analysis of mismatch distributions, neutrality tests, and star-like patterns present in the network of haplotypes provided consistent inference of past population expansion in the Western Mediterranean, Atlantic and Mozambique Channel regions. Our study provides the first evidence of genetic structuring in A. antennatus across its distributional range
The authors thank M. Arculeo, A. Carbonell, M. Cortey, L. Hidalgo, C.- Y. Politou, I. Sobrino and A. Souplet for their help in sample collection; and C. Martinez and R. Patellani for their assistance in the laboratory. This work was supported by grants to M.I.R. by the Spanish Ministerio de Educación y Ciencia (CTM2006-00785) and Ministerio de Ciencia e Innovación (AGL2009-09228). M.V.F. benefited from a predoctoral fellowship from the Ministerio de Educación y Ciencia (BES-2007-15865)
Format: application/pdf
ISSN: 0171-8630 (versió paper)
1616-1599 (versió electrònica)
Document access: http://hdl.handle.net/10256/12036
Language: eng
Publisher: Inter Research
Collection: MEC/PN 2006-2009/CTM2006-00785
MICINN/PN 2010-2013/AGL2009-09228
Reproducció digital del document publicat a: http://dx.doi.org/10.3354/meps08881
Articles publicats (D-B)
Is part of: © Marine Ecology Progress Series, 2011, vol. 421, p. 163-171
Rights: Tots els drets reservats
Subject: Gambes -- Genètica -- Mediterrània, Mar
Shrimps -- Genetics -- Mediterranean Sea
ADN mitocondrial -- Mediterrània, Mar
Mitochondrial DNA -- Mediterranean Sea
Title: Genetic structure in the blue and red shrimp Aristeus antennatus and the role played by hydrographical and oceanographical barriers
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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