Trans-Atlantic Distribution of a Mangrove Oyster Species Revealed by 16S mtDNA and Karyological Analyses

• DOI: 10.2307/1543473
• Publication Date: 2007-01-23T05:45:00Z
• Authors: S. Lapègue; I. Boutet; A. Leitão; S. Heurtebise; P. Garcia; C. Thiriot-Quiévreux; P. Boudry
• Keywords: 0301 basic medicine; 570; [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics; [SDV]Life Sciences [q-bio]; Karyotype; Molecular Sequence Data; [SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry; [SDV.BBM.BM] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology; [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy; DNA, Mitochondrial; Polymerase Chain Reaction; 03 medical and health sciences; Crassostrea gasar; [SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN]; Sequence Homology, Nucleic Acid; Mangrove oyster; [SDV.BID.SPT] Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy; [SDV.BID.EVO] Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE]; Animals; 14. Life underwater; Atlantic Ocean; Phylogeny; Demography; Molecular Biology/Genomics [q-bio.GN]; [SDV.BIBS] Life Sciences [q-bio]/Quantitative Methods [q-bio.QM]; Polymorphism, Genetic; Base Sequence; [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE]; 16S mitochondrial DNA; [SDV.BBM.BM]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology; Phylogenetics and taxonomy; Sequence Analysis, DNA; South America; [SDV.BIBS]Life Sciences [q-bio]/Quantitative Methods [q-bio.QM]; Ostreidae; Molecular Biology/Molecular biology; [SDE.BE] Environmental Sciences/Biodiversity and Ecology; Phylogeography; Haplotypes; [SDV.BBM.BM]Life Sciences [q-bio]/Biochemistry; Africa; [SDV.BBM.GTP] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN]; [SDE.BE]Environmental Sciences/Biodiversity and Ecology; Polymorphism, Restriction Fragment Length

Three species of mangrove oysters, Crassostrea rhizophorae, C. brasiliana, and gasar, have been described along the Atlantic shores South America Africa. Because distribution these molluscs is great biological commercial interest, their taxonomy deserve further clarification. Therefore, 15 populations were sampled from both continents. Their 16S mitochondrial polymorphism was studied by sequencing PCR-RFLP analysis. Two haplotypes identified. Haplotype a only one observed in Africa, but it also together with haplotype b. gasar oyster identified on west coast attributed to this species, which has thus shown occur America. b rhizophorae. The karyotypes specimens Africa America, very similar, at same location Brazil. occurrence adds third species—in addition rhizophorae brasiliana—to list present coasts. predominant surface circulation patterns part Ocean favor hypothesis that transported Finally, phylogenetic tree built seven sequences Saccostrea showed intermediate between American (C. virginica rhizophorae) Asian gigas ariakensis).