FN Archimer Export Format PT J TI Genetic characterisation of oyster populations along the north-eastern coast of Tunisia BT AF DRIDI, S. ROMDHANE, M. S. HEURTEBISE, Serge EL CAFSI, M. BOUDRY, Pierre LAPEGUE, Sylvie AS 1:1,2;2:2;3:3;4:1;5:3;6:4; FF 1:;2:;3:PDG-DOP-DCN-AGSAE-LGP;4:;5:PDG-DOP-DCB-PFOM-PI;6:PDG-DOP-DCN-AGSAE-LGP; C1 Campus Univ El Manar II, Dept Biol, Fac Sci Tunis, Unite Physiol & Ecophysiol Organismes Aquat, Tunis 2092, Tunisia. Inst Natl Agronom Tunis, Dept Sci Prod Anim & Peche, Unite Ecosyst & Resources Aquat, Tunis 1082, Tunisia. IFREMER, Inst Francais Rech Exploitat Mer, UMR Physiol & Ecophysiol Mollusques Marins M100, F-29280 Plouzane, France. Lab Ifremer Genet & Pathol, F-17390 La Tremblade, France. C2 UNIV EL MANAR II, TUNISIA INAT, TUNISIA IFREMER, FRANCE IFREMER, FRANCE SI LA TREMBLADE BREST SE PDG-DOP-DCN-AGSAE-LGP PDG-DOP-DCB-PFOM-PI IN WOS Ifremer jusqu'en 2018 copubli-int-hors-europe copubli-sud IF 1.312 TC 3 UR https://archimer.ifremer.fr/doc/00000/11063/7820.pdf LA English DT Article DE ;16S rRNA;Crassostrea gigas;genetics;Mediterranean Sea;Ostreola stentina;polymorphism AB The taxonomy of oysters has been traditionally based on characteristics of the shell. More recently, the analysis of protein and DNA polymorphism has provided a means to overcome difficulties in distinguishing the different species of oysters based solely on shell morphology. In order to identify oysters of the Tunisian north-east coast, we sequenced a 16S rRNA mitochondrial fragment from 68 oysters sampled from the Bizert Lagoon and the Gulf of Hammamet in northern Tunisia. Comparison of oyster 16S rRNA sequences available in GenBank showed the presence of both Ostreola stentina and Crassostrea gigas in our samples, which could not be detected on the basis of shell morphology only. These data confirmed that C. gigas, a non-native species, is now naturalised in the Bizert Lagoon. Furthermore, significant levels of genetic divergence among the 16S rRNA haplotypes from O. stentina populations have been observed. Specifically, the haplotypes found in the Bizert Lagoon are closer to those previously detected from Morocco and Portugal, whereas those in the Gulf of Hammamet are closer to the haplotypes from the south of Tunisia, with a divergence ranging from 2.1% to 2.7% between the northern and eastern Tunisian haplotypes. The possible impact of the Siculo-Tunisian Strait on the phylogeography of O. stentina is discussed. PY 2008 PD DEC SO African Journal Of Marine Science SN 1814-232X PU Natl Inquiry Services Centre Pty Ltd VL 30 IS 3 UT 000263518000004 BP 489 EP 495 DI 10.2989/AJMS.2008.30.3.4.638 ID 11063 ER EF