@article {9246, title = {Molecular ecology of the freshwater shrimp Caridina natalensis and comparative analysis with other amphidromous species (Decapoda, Teleostei, and Gastropoda)}, journal = {Hydrobiologia}, year = {2023}, month = {Jun-26-2023}, abstract = {Due to their life cycle shared between rivers and oceans, amphidromous organisms serve as intriguing models for studying biogeography. To investigate the implications of their unique life history, we examined the population structure of the amphidromous shrimp Caridina natalensis across its known range in the South Western Indian Ocean. A total of 118 specimens were collected from 7 islands (Mayotte, Moh{\'e}li, Mah{\'e}, Praslin, Silhouette, Mauritius and Madagascar) and the African mainland (South Africa), and their 16S rRNA and Cox1 mitochondrial genes were sequenced. Our findings reveal significant regional structure among archipelagos, suggesting complex patterns of dispersal involving successive events of extinction-recolonization. By conducting a comparative analysis with six other amphidromous species from the South Western Indian Ocean, based on literature sources, we were able to draw conclusions regarding the amphidromous biogeography of the area. Furthermore, we propose a novel classification of amphidromous species, considering their population structure and life history traits. We defined four categories of increasing dispersal abilities and decreasing genetic population structure: 1. Land-locked species; 2. Species with reduced or facultative amphidromy; 3. Species with common amphidromy; and 4. Super-amphidromous species. Lastly, we identified the Comoros Islands (namely Mayotte and Moh{\'e}li) as a critical area for the dispersal of amphidromous species, emphasizing the need for prioritizing conservation efforts in this region.}, issn = {0018-8158}, doi = {10.1007/s10750-023-05283-7}, url = {https://link.springer.com/10.1007/s10750-023-05283-7}, author = {de Mazancourt, Valentin and Ahmed Abdou and Castelin, Magalie and Ellien, C{\'e}line and Clara Lord and Marion Mennesson and Renneville, Cl{\'e}mentine and Marquet, G{\'e}rard and Philippe Keith} } @article {7724, title = {New taxonomic and phylogeographic data on three nominal species of the genus Septaria F{\'e}russac, 1807 (Gastropoda: Cycloneritida: Neritidae)}, journal = {Zootaxa}, volume = {4915}, year = {2021}, month = {Jan-20-2021}, pages = {28 - 40}, abstract = {Due to superficial morphological similarities, there is often confusion in the identification of some species of the genus Septaria. A combined analysis of the genital anatomy, morphometric and DNA, based on a portion of the COI gene, applied to three nominal species of this genus, confirmed the validity of Septaria tahitiana Eichhorst, 2016, and suggested that Septaria borbonica (Bory de Saint Vincent, 1804) is a subspecies of Septaria porcellana (Linnaeus, 1758), both taxa with disjunct distribution areas: Septaria borbonica in the western Indian Ocean and Septaria porcellana the western Pacific and eastern Indian Oceans. The possible presence of Septaria tesselata (Lamarck, 1816) in Mayotte (Comoros Archipelago) needs to be confirmed.}, keywords = {Indo-Pacific, mitochondrial DNA, mollusc, Phylogeny, shell morphometrics, taxonomy}, issn = {1175-5326}, doi = {10.11646/zootaxa.4915.110.11646/zootaxa.4915.1.2}, url = {https://www.biotaxa.org/Zootaxa/issue/view/zootaxa.4915.1}, author = {Ahmed Abdou} } @article {6041, title = {Phylog{\'e}ographie de Neritina stumpffi Boettger, 1890 et Neritina canalis Sowerby, 1825 (Gastropoda, Cycloneritida, Neritidae)}, journal = {Zoosystema}, volume = {41}, year = {2019}, pages = {237-248}, abstract = {

The population genetic structure of Neritina stumpffi Boettger, 1890 in the Indo-Pacific and Neritina canalis Sowerby, 1825 in the Pacific Ocean were investigated using a fragment of the mitochondrial COI gene. The haplotype network of N. stumpffi showed a genetic structuration between the two oceans, with shared haplotypes. Concerning N. canalis, western Pacific and central Pacific populations are genetically structured, without shared haplotypes. The Coral Triangle appears to have played a filtering barrier role for N. stumpffi, whose presence in both oceans could be explained by the flow of the south-equatorial current. A barrier to the dispersal of N. canalis between the western and the central Pacific may also exist.

}, keywords = {COI gene, Indian Ocean, larval dispersion, Pacific Ocean, Phylogeography}, author = {Ahmed Abdou and Clara Lord and Philippe Keith and Ren{\'e} Galzin} } @article {7512, title = {Revision of the species complex{\textquoteright}Neritina pulligera{\textquoteright}(Gastropoda, Cyclonetimorpha: Neritidae) using taxonomy and barcoding}, journal = {Vie et Milieu / Life \& Environment}, volume = {67}, year = {2017}, month = {2017}, pages = {149-161}, author = {Ahmed Abdou and Ren{\'e} Galzin and Clara Lord and Denys, Ga{\"e}l PJ and Philippe Keith} } @article {4355, title = {Freshwater neritids (Mollusca: Gastropoda) of tropical islands, amphidromy as a life cycle, a review}, journal = {Revue d{\textquoteright}{\'e}cologie (Terre et Vie)}, volume = {70}, year = {2015}, pages = {387-397}, author = {Ahmed Abdou and Philippe Keith and Ren{\'e} Galzin} }