caa a22 4500 445894113 CHVBK 20180317145626.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s10750-011-0827-9 doi (NATIONALLICENCE)springer-10.1007/s10750-011-0827-9 Genetic variation among populations of the endangered fan mussel Pinna nobilis (Mollusca: Bivalvia) along the Tunisian coastline [Elektronische Daten] [Lotfi Rabaoui, Randa Mejri, Sabiha Tlig-Zouari, Lilia Bahri, Oum Ben Hassine, Costas Tsigenopoulos] The Mediterranean fan mussel Pinna nobilis is an endangered invertebrate due to overexploitation and habitat deterioration. In this species, two distinctive morphs, the "combed” and "straight and wide” forms, have been recorded and it is not known whether this morphometric variability is attributed to genetic or environmental factors. In this study, we used mitochondrial COI sequences to describe the genetic variability of five Pinna nobilis populations sampled along the northern, eastern, and southern Tunisian coastline, and to examine whether there is a genetic differentiation between the two forms of this species. DNA sequences of 675bp from the mitochondrial COI gene have revealed 10 different haplotypes among 49 examined specimens. Haplotype diversity was high, ranging between 0.40441 and 0.80952, and showed a decreasing North-East gradient, which seems to be explained by the hydrogeography of the study area. The mitochondrial COI marker did not suggest a genetic distinctiveness between the two Pinna nobilis shell forms, "combed” and "straight and wide”. Although the morphometric plasticity of the fan mussel could be due to the influence of environmental factors, further genetic studies using nuclear markers are envisaged to investigate whether this differentiation is associated to gene flow restrictions. Springer Science+Business Media B.V., 2011 Fan mussel nationallicence Pinna nobilis nationallicence COI gene nationallicence "Combed” and "straight and wide” shell forms nationallicence Endangered nationallicence Tunisia nationallicence Rabaoui Lotfi Research Unit of Biology, Ecology and Parasitology of Aquatic Organisms, Faculty of Science of Tunis, University Campus, El Manar I, 2092, Tunis, Tunisia aut Mejri Randa Research Unit of Biology, Ecology and Parasitology of Aquatic Organisms, Faculty of Science of Tunis, University Campus, El Manar I, 2092, Tunis, Tunisia aut Tlig-Zouari Sabiha Research Unit of Biology, Ecology and Parasitology of Aquatic Organisms, Faculty of Science of Tunis, University Campus, El Manar I, 2092, Tunis, Tunisia aut Bahri Lilia Research Unit of Biology, Ecology and Parasitology of Aquatic Organisms, Faculty of Science of Tunis, University Campus, El Manar I, 2092, Tunis, Tunisia aut Ben Hassine Oum Research Unit of Biology, Ecology and Parasitology of Aquatic Organisms, Faculty of Science of Tunis, University Campus, El Manar I, 2092, Tunis, Tunisia aut Tsigenopoulos Costas Institute of Marine Biology and Genetics (IMBG), Hellenic Centre for Marine Research (HCMR) Crete, Thalassocosmos, Gournes Pediados, PO Box 2214, 715 00, Heraklion, Greece aut Hydrobiologia Springer Netherlands 678/1(2011-12-01), 99-111 0018-8158 678:1<99 2011 678 10750 https://doi.org/10.1007/s10750-011-0827-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0827-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rabaoui Lotfi Research Unit of Biology, Ecology and Parasitology of Aquatic Organisms, Faculty of Science of Tunis, University Campus, El Manar I, 2092, Tunis, Tunisia aut NATIONALLICENCE 700 1- Mejri Randa Research Unit of Biology, Ecology and Parasitology of Aquatic Organisms, Faculty of Science of Tunis, University Campus, El Manar I, 2092, Tunis, Tunisia aut NATIONALLICENCE 700 1- Tlig-Zouari Sabiha Research Unit of Biology, Ecology and Parasitology of Aquatic Organisms, Faculty of Science of Tunis, University Campus, El Manar I, 2092, Tunis, Tunisia aut NATIONALLICENCE 700 1- Bahri Lilia Research Unit of Biology, Ecology and Parasitology of Aquatic Organisms, Faculty of Science of Tunis, University Campus, El Manar I, 2092, Tunis, Tunisia aut NATIONALLICENCE 700 1- Ben Hassine Oum Research Unit of Biology, Ecology and Parasitology of Aquatic Organisms, Faculty of Science of Tunis, University Campus, El Manar I, 2092, Tunis, Tunisia aut NATIONALLICENCE 700 1- Tsigenopoulos Costas Institute of Marine Biology and Genetics (IMBG), Hellenic Centre for Marine Research (HCMR) Crete, Thalassocosmos, Gournes Pediados, PO Box 2214, 715 00, Heraklion, Greece aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 678/1(2011-12-01), 99-111 0018-8158 678:1<99 2011 678 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer