Genetic variability of the banded murex (Hexaplex trunculus) revealed by ND2 and ITS2 sequences
- Autores: Marzouk Z.1, Said K.1
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Afiliações:
- ISBM, Laboratoire de recherche de Génétique, Biodiversité et Valorisation des Bio-ressources (LR11ES41)
- Edição: Volume 43, Nº 1 (2017)
- Páginas: 92-98
- Seção: Original Papers
- URL: https://journals.rcsi.science/1063-0740/article/view/183878
- DOI: https://doi.org/10.1134/S1063074017010084
- ID: 183878
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Resumo
The gastropod Hexaplex trunculus is widely distributed in a relatively large range of habitats, but has no dispersal stage. We investigated its genetic structure across its distribution range, from Mediterranean Sea to adjacent Atlantic coasts, by sequencing mitochondrial DNA portions of the NADH dehydrogenase gene ND2 (420 pb) and the internal transcribed spacer ITS2 (450 pb). Our results suggested a significant genetic variability of ND2 (π = 0.009 and Hd = 0.629) and low variability of the ITS2 sequences. A strong phylogeographic break, separated the Aegean populations from those of Western/Eastern Mediterranean and the Atlantic ones, was founded. The tow lineages may have been separated by vicariance events due to the Peloponnese break that separates the Aegean populations from other populations and was maintained until now by the quasi-circular anticyclonic front associated to the straits of Cretan Arc of the Peloponnesian Peninsula. Tunisian coasts appear particularly diverse since the two divergent lineages co-occured. These results may have management consequences since H. trunculus is a high commercial value harvested species.
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Sobre autores
Z. Marzouk
ISBM, Laboratoire de recherche de Génétique, Biodiversité et Valorisation des Bio-ressources (LR11ES41)
Autor responsável pela correspondência
Email: zinedmarzouk@hotmail.com
Tunísia, Monastir, 5000
K. Said
ISBM, Laboratoire de recherche de Génétique, Biodiversité et Valorisation des Bio-ressources (LR11ES41)
Email: zinedmarzouk@hotmail.com
Tunísia, Monastir, 5000