Extensive population subdivision of the cuttlefish Sepia officinalis (Mollusca: Cephalopoda) around the Iberian Peninsula indicated by microsatellite DNA variation

  • Pérez-Losada M
  • Guerra A
  • Carvalho G
 et al. 
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Abstract

The Atlantic Ocean-Mediterranean Sea junction has been proposed as an important phylogeographical area on the basis of concordance in genetic patterns observed at allo-zyme, mtDNA and microsatellite DNA markers in several marine species. This study presents microsatellite DNA data for a mobile invertebrate species in this area, the cuttlefish Sepia officinalis, allowing comparison of this relatively new class of DNA marker with previous allozyme results, and examination of the relative effects on gene flow of the Strait of Gibraltar and the Almería-Oran oceanographic front. Gen-etic variation at seven microsatellite loci screened in six samples from NE Atlantic and Mediterranean coasts of the Iberian Peninsula was high (mean Na = 9.6, mean H e = 0.725). Microsatellites detected highly significant

Author-supplied keywords

  • Cephalopod
  • Clines
  • Genetic differentiation
  • Introgression
  • Microsatellites
  • Sepia officinalis

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Authors

  • M. Pérez-Losada

  • A. Guerra

  • G. R. Carvalho

  • A. Sanjuan

  • P. W. Shaw

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