Journal
ESTUARINE COASTAL AND SHELF SCIENCE
Volume 149, Issue -, Pages 80-86Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ecss.2014.07.013
Keywords
gene flow; genetic diversity; mullet; SSR markers; fisheries management; migratory fishes
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Funding
- REDE SISBIOTA-PELD project (FAPERGS) [11/2262-7]
- REDE SISBIOTA-PELD project (CNPq) [563263/2010-5]
- PELD (Brazilian Long Term Ecological Research Program) [403805/2012-0]
- CNPq-Universal [Proc. 482274/2012-7]
- Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET-Argentina)
- FURG
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The mullet Mugil liza is distributed along the Atlantic coast of South America, from Argentina to Venezuela, and it is heavily exploited in Brazil. We assessed patterns of distribution of neutral nuclear genetic variation in 250 samples from the Brazilian states of Rio de Janeiro, Sao Paulo, Santa Catarina and Rio Grande do Sul (latitudinal range of 23-31 degrees S) and from Buenos Aires Province in Argentina (36 degrees S). Nine microsatellite loci revealed 131 total alleles, 3-23 alleles per locus, He: 0.69 and Ho: 0.67. Significant genetic differentiation was observed between Rio de Janeiro samples (23 degrees S) and those from all other locations, as indicated by F-ST, hierarchical analyses of genetic structure, Bayesian cluster analyses and assignment tests. The presence of two different demographic clusters better explains the allelic diversity observed in mullets from the southernmost portion of the Atlantic coast of Brazil and from Argentina. This may be taken into account when designing fisheries management plans involving Brazilian, Uruguayan and Argentinean M. liza populations. (C) 2014 Elsevier Ltd. All rights reserved.
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