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- Title
Genetic Population Structure of Thunnus albacares in the Central Pacific Ocean Based on mtDNA COI Gene Sequences.
- Authors
Li, Weiwen; Chen, Xinjun; Xu, Qianghua; Zhu, Jiangfeng; Dai, Xiaojie; Xu, Liuxiong
- Abstract
Thunnus albacares is an important fishery species throughout the world. Polymorphisms of sequence variations in mtDNA COI genes were assessed to explore the genetic differentiations among 11 populations of T. albacares sampled from the central Pacific Ocean. Sixty-one mtDNA haplotypes and 38 variable sites were detected. Analysis of mtDNA COI sequences revealed that tuna from the 11 localities were characterized by moderately high haplotype diversity ( h = 0.650 ± 0.040), while sequence divergence between haplotypes was relatively low ( π = 0.00364 ± 0.00044). Analyses of molecular variance and F analysis supported that significant genetic differentiations existed between some of the sampled populations. Tests of neutral evolution and mismatch distribution analysis suggested that T. albacares might have experienced a population expansion, which possibly occurred within the last 0.82 million years. Our study unraveled the genetic structure of the extant population of T. albacares and addressed the related fishery management issues including fishery stock identification and management.
- Subjects
PACIFIC Ocean; YELLOWFIN tuna; FISH populations; MITOCHONDRIAL DNA; NUCLEOTIDE sequence; GENETIC polymorphisms; FISHES
- Publication
Biochemical Genetics, 2015, Vol 53, Issue 1-3, p8
- ISSN
0006-2928
- Publication type
Article
- DOI
10.1007/s10528-015-9666-0