期刊
JOURNAL OF SEA RESEARCH
卷 76, 期 -, 页码 146-153出版社
ELSEVIER
DOI: 10.1016/j.seares.2012.08.004
关键词
Mitochondrial Genetic Diversity; Allopatric Divergence; Fisheries; Mediterranean Sea; Indian Ocean
资金
- Ministerio de Educacion y Ciencia, Spain [CTM2006-00785, BES-2007-15865]
- Ministerio de Ciencia e Innovacion, Spain [AGL2009-09228]
The giant red shrimp, Aristaeomorpha foliacea, is a commercially important species in the Mediterranean Sea (MED), Mozambique Channel (MOZ), and north western Australia (AUS). 685 bp of the mitochondrial COI gene was sequenced in 317 individuals from six Mediterranean and two Indian Ocean localities. Genetic diversity estimates of Indian Ocean samples were higher than those of MED counterparts. AMOVA, phylogenetic tree, haplotype network and Bayesian assignment analyses detected three haplogroups, corresponding to MED, MOZ and AUS, separated by three and 38 mutational steps, respectively. Within MED shallow genetic divergence between populations was dependent on local oceanographical characteristics. Mismatch distribution analysis and neutrality tests provided a consistent indication of past population expansion in each region considered. Our results provide the first evidence of genetic structure in A. foliacea and suggest a scenario of allopatric speciation within the Indian Ocean that, however needs deeper examination. (C) 2012 Elsevier B.V. All rights reserved.
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