Genetic characterisation of oyster populations along the north-eastern coast of Tunisia
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 oy...
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ftarchimer:oai:archimer.ifremer.fr:11063 2023-05-15T15:58:06+02:00 Genetic characterisation of oyster populations along the north-eastern coast of Tunisia Dridi, S. Romdhane, M. S. Heurtebise, Serge El Cafsi, M. Boudry, Pierre Lapegue, Sylvie 2008-12 application/pdf https://archimer.ifremer.fr/doc/00000/11063/7820.pdf https://doi.org/10.2989/AJMS.2008.30.3.4.638 https://archimer.ifremer.fr/doc/00000/11063/ eng eng Natl Inquiry Services Centre Pty Ltd https://archimer.ifremer.fr/doc/00000/11063/7820.pdf doi:10.2989/AJMS.2008.30.3.4.638 https://archimer.ifremer.fr/doc/00000/11063/ info:eu-repo/semantics/openAccess restricted use African Journal Of Marine Science (1814-232X) (Natl Inquiry Services Centre Pty Ltd), 2008-12 , Vol. 30 , N. 3 , P. 489-495 16S rRNA Crassostrea gigas genetics Mediterranean Sea Ostreola stentina polymorphism text Publication info:eu-repo/semantics/article 2008 ftarchimer https://doi.org/10.2989/AJMS.2008.30.3.4.638 2021-09-23T20:18:07Z 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. Article in Journal/Newspaper Crassostrea gigas Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) African Journal of Marine Science 30 3 489 495 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
16S rRNA Crassostrea gigas genetics Mediterranean Sea Ostreola stentina polymorphism |
spellingShingle |
16S rRNA Crassostrea gigas genetics Mediterranean Sea Ostreola stentina polymorphism Dridi, S. Romdhane, M. S. Heurtebise, Serge El Cafsi, M. Boudry, Pierre Lapegue, Sylvie Genetic characterisation of oyster populations along the north-eastern coast of Tunisia |
topic_facet |
16S rRNA Crassostrea gigas genetics Mediterranean Sea Ostreola stentina polymorphism |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Dridi, S. Romdhane, M. S. Heurtebise, Serge El Cafsi, M. Boudry, Pierre Lapegue, Sylvie |
author_facet |
Dridi, S. Romdhane, M. S. Heurtebise, Serge El Cafsi, M. Boudry, Pierre Lapegue, Sylvie |
author_sort |
Dridi, S. |
title |
Genetic characterisation of oyster populations along the north-eastern coast of Tunisia |
title_short |
Genetic characterisation of oyster populations along the north-eastern coast of Tunisia |
title_full |
Genetic characterisation of oyster populations along the north-eastern coast of Tunisia |
title_fullStr |
Genetic characterisation of oyster populations along the north-eastern coast of Tunisia |
title_full_unstemmed |
Genetic characterisation of oyster populations along the north-eastern coast of Tunisia |
title_sort |
genetic characterisation of oyster populations along the north-eastern coast of tunisia |
publisher |
Natl Inquiry Services Centre Pty Ltd |
publishDate |
2008 |
url |
https://archimer.ifremer.fr/doc/00000/11063/7820.pdf https://doi.org/10.2989/AJMS.2008.30.3.4.638 https://archimer.ifremer.fr/doc/00000/11063/ |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_source |
African Journal Of Marine Science (1814-232X) (Natl Inquiry Services Centre Pty Ltd), 2008-12 , Vol. 30 , N. 3 , P. 489-495 |
op_relation |
https://archimer.ifremer.fr/doc/00000/11063/7820.pdf doi:10.2989/AJMS.2008.30.3.4.638 https://archimer.ifremer.fr/doc/00000/11063/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.2989/AJMS.2008.30.3.4.638 |
container_title |
African Journal of Marine Science |
container_volume |
30 |
container_issue |
3 |
container_start_page |
489 |
op_container_end_page |
495 |
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1766393831050182656 |