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- Title
Mitochondrial DNA sequence variation of Japanese anchovyEngraulis japonicusfrom the Yellow Sea and East China Sea.
- Authors
Zi-Niu Yu; Xiao-Yu Kong; Han-Hut Guo; Yan-Yan Jjang; Zhi-Meng Zhuang; Xtan-Shi Tin
- Abstract
Sequence variation of a fragment of the mitochondrial cytochromeb(cytb) and cytochromecoxidase subunit I (COI) gene was examined using polymerase chain reaction and direct sequencing among three populations of Japanese anchovyEngraulis japonicusfrom the Yellow Sea and East China Sea. A total of 24 and 47 nucleotide sites were detected variable defining 29 and 32 haplotypes in cytband COI data, respectively. All variable sites except one in COI were silent in the two sets of sequences. The Ewens–Watterson test indicated that the observed allelic configurations in both data sets were in full agreement with neutral expectations. The variation level was high, withh = 0.957 ± 0.018,π = 0.644 ± 0.387 (%) in cytbdata set andh = 0.958 ± 0.021,π = 0.640 ± 0.386 (%) in COI data set, respectively. However, at the population level,Fstvalues between pairs of populations were not significantly different from zero (P > 0.05) in both data sets. The analysis of haplotype frequency distribution showed no significant differences among populations. Similarly, the analysis of the partitioning of molecular variance indicated that all or almost all of the genetic variation was distributed within populations. Based on the data from this study, the existence of separate genetic stocks in this area were not detected. Mixing of stocks to some extent in migration cycle and dispersal capacity of anchovy's planktonic larvae could be the reasons for genetic homogeneity in this species in the Yellow Sea and East China Sea.
- Subjects
CHINA Sea; YELLOW Sea; MITOCHONDRIAL DNA; ORGANELLES; ENGRAULIS; ANCHOVIES; CLUPEIFORMES
- Publication
Fisheries Science, 2005, Vol 71, Issue 2, p299
- ISSN
0919-9268
- Publication type
Article
- DOI
10.1111/j.1444-2906.2005.00964.x