Population genetics of the black scar oyster, Crassostrea iredalei: repercussion of anthropogenic interference.
Mitochondrial cytochrome oxidase subunit I (COI) gene was utilized to assess the population genetics of the commercially important black scar oyster, Crassostrea iredalei among 11 populations throughout the west and east coasts Peninsular Malaysia and Sabah (Malaysian Borneo). Overall, populations of C. iredalei demonstrated low nucleotide diversity π (0.000-0.004) and low-to-high haplotype diversity h (0.000-0.795) levels. Genetic structuring was detected between the Peninsular Malaysia and Sabah populations as revealed by the FST analysis. However, the COI gene analyses showed minimal and non-significant (p > 0.05) population differentiation within the east and west coasts Peninsular Malaysia and Sabah regions. This was attributed to both high larval dispersal along the east and west coasts and human-driven spat translocation between the two coastlines due to C. iredalei cultivation practices. Phylogeographic relationships inferences were also conducted to further support these hypotheses. The neutrality and mismatch distribution analyses suggested that C. iredalei had experienced a/several bottleneck event(s), followed by population expansion. The molecular information obtained from this study could be incorporated in a pragmatic aquaculture management strategy of wild broodstock and the hatchery lines of C. iredalei in Malaysia.
a School of Biological Sciences, Universiti Sains Malaysia , Pulau Pinang , Malaysia .
Danial Hariz
DH
Zainal Abidin
a School of Biological Sciences, Universiti Sains Malaysia , Pulau Pinang , Malaysia .
Suzana
S
Mustaffa
b Fisheries Research Institute , Batu Maung , Pulau Pinang , Malaysia , and.
Masazurah A
MA
Rahim
b Fisheries Research Institute , Batu Maung , Pulau Pinang , Malaysia , and.
Devakie M
DM
Nair
a School of Biological Sciences, Universiti Sains Malaysia , Pulau Pinang , Malaysia .
Darlina Md
DM
Naim
a School of Biological Sciences, Universiti Sains Malaysia , Pulau Pinang , Malaysia .|c Centre for Marine and Coastal Studies, Universiti Sains Malaysia , Pulau Pinang , Malaysia.
Siti Azizah
SA
Mohd Nor
D000818:Animals; D003576:Electron Transport Complex IV / Q000235:genetics*; D014644:Genetic Variation; D005828:Genetics, Population; D006239:Haplotypes / Q000235:genetics; D006801:Humans; D008296:Malaysia; D010125:Ostreidae / Q000235:genetics*; D058974:Phylogeography; D011157:Population Dynamics
D003576:Electron Transport Complex IV
Aquaculture management; COI; Crassostrea iredalei; population genetics