MEPS 426:197-212 (2011)  -  DOI: https://doi.org/10.3354/meps09035

Phylogeny and phylogeography of Atlantic oyster species: evolutionary history, limited genetic connectivity and isolation by distance

C. Lazoski1, J. Gusmão1,2, P. Boudry3, A. M. Solé-Cava1,*

1Laboratório de Biodiversidade Molecular – Departamento de Genética, Instituto de Biologia, UFRJ, CCS, Bloco A, sala A2-98, Ilha do Fundão, 21941-490 Rio de Janeiro, Brazil
2Laboratório de Genética Marinha—Departamento de Genética, Instituto de Biologia Roberto Alcântara Gomes, UERJ, Maracanã, 20550-900 Rio de Janeiro, Brazil
3Ifremer, UMR M100 Physiologie et Ecophysiologie des Mollusques Marins, 29280 Plouzané, France
*Corresponding author. Email:

ABSTRACT: The phylogenetic relationships between naturally occurring Atlantic Crassostrea oyster species were inferred through analyses of mitochondrial (cytochrome oxidase subunit I and 16S) and nuclear (second internal transcribed spacer) sequences. We also scored 15 allozyme loci on 422 oysters to study population structuring of C. rhizophorae and C. brasiliana along 9000 km of the Western Atlantic coastline. Despite morphological similarities, C. virginica was genetically more closely related to C. rhizophorae than to C. brasiliana. In contrast, C. paraibanensis was genetically indistinguishable from C. brasiliana, which is probably a junior synonym of the African C. gasar. Significant genetic differentiation between populations of C. rhizophorae and C. gasar were found along the Western Atlantic coast, supporting an isolation-by-distance pattern.


KEY WORDS: Population genetics · Biogeography · Allozymes · Cytochrome c oxidase subunit I · COI · 16S · Internal transcribed spacer 2 · ITS-2


Full text in pdf format 
Cite this article as: Lazoski C, Gusmão J, Boudry P, Solé-Cava AM (2011) Phylogeny and phylogeography of Atlantic oyster species: evolutionary history, limited genetic connectivity and isolation by distance. Mar Ecol Prog Ser 426:197-212. https://doi.org/10.3354/meps09035

Export citation
Mail this link - Contents Mailing Lists - RSS
- -