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Title of Journal: Genetica

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Abbravation: Genetica

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Springer Netherlands

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DOI

10.1007/bf00772877

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1573-6857

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Spatiotemporal genetic differentiation of Cuban na

Authors: Aymée RobainasBarcia Gloria Blanco José A Sánchez Monique Monnerot Michel Solignac Erik GarcíaMachado
Publish Date: 2007/10/13
Volume: 133, Issue: 3, Pages: 283-294
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Abstract

We analyzed the spatiotemporal genetic structure of Farfantepenaeus notialis populations using five microsatellites loci in order to understand the influence of natural events such as hurricanes on the genetic drift/migration balance as the main cause for the variation of allele frequencies over time The results were compared with the previous ones obtained from allozymes and mtDNA High and stable genetic diversity levels He  =  0879  ±  00015 were found over eight years for the populations that inhabit the south Cuban platform however significant changes of allele frequencies were detected over time The F ST estimates albeit low revealed significant differences among populations inside the Ana Maria Gulf for 1995 but not for the 1999 and 2003 samples The F ST AMOVA and the genetic distance analysis revealed the instability of the genetic structure over time in accordance with allozymes results The correspondence of the microsatellite results with those obtained from allozymes confirm the effects of migration enhanced by natural events as the main cause of the temporal variation of allele frequencies The genetic drift effect was discarded through the evaluation of Ne and the M ratio while natural selection effects were rejected because of the lowest probability of microsatellite loci being under selective pressures The microsatellite data are also consistent with the results obtained with mtDNA in detecting significant and persistent genetic differences between the Gulfs of Ana María and Batabanó for the years 1995 and 2003We thank Nicole Dennebouy for the technical assistance Ileana Álvarez Mireya Sosa Serbilio Gilma Delgado and Luis Fong from Centro de Investigaciones Pesqueras for facilitating sampling in commercial vessels and for discussion on fisheries We thank also the personnel from fishery bureau of Santa Cruz del Sur Júcaro Cienfuegos and Batabanó We thank the editors and two anonymous referees for reading and providing valuable suggestions to our manuscript This research was supported by grants from the International Foundation for Science Stockholm Sweden to EGM and from the University of Havana Alma Mater to ARB


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