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Vol. 51 No. 1, 2012
Population Structure and Historical Demography of the
Whiskered Velvet Shrimp (Metapenaeopsis
barbata) off China and
Taiwan Inferred from the Mitochondrial Control Region
Ta-Jen
Chu1, Daryi Wang2, Hsien-Lu Huang3,
Feng-Jiau Lin4, and Tzong-Der Tzeng5,*
1Department
of Leisure and Recreation Management, Chung Hua Univ., 707 Wu-Fu Road,
Sec. 2, Hsinchu 300, Taiwan
2Biodiversity Research Center, Academia Sinica,
Nangang, Taipei 115, Taiwan
3Department of Nutrition and Health Science, Fooyin
Univ., 151 Chinhsueh Road, Ta-Liao, Kaohsiung 831, Taiwan
4Department of Life Sciences, National Cheng Kung
Univ., Tainan 701, Taiwan
5Department of Leisure, Recreation and Tourism
Management, Shu-Te Univ., 59 Hun-Shan Rd., Hun-Shan Village, Yen-Chau,
Kaohsiung 824, Taiwan
Ta-Jen Chu, Daryi Wang, Hsien-Lu Huang, Feng-Jiau Lin,
and Tzong-Der Tzeng (2012) Sequence analyses of a 344-base-pair
segment of the mitochondrial control region were conducted to elucidate
the population structure and historical demography of the whiskered
velvet shrimp (Metapenaeopsis barbata) off China and Taiwan. Six
populations including 187 individuals were separately collected from
the northern East China Sea (ECS), waters off Kagoshima (KS, Japan),
Taichung (TC, west-central Taiwan), Cheding (CD, southwestern Taiwan),
Xiamen (XM, southern China) and Hong Kong (HK). The haplotype diversity
(h) was high for all
populations (96.95%), with values ranging 89.1% (CD) to 98.9% (KS).
Nucleotide diversity (π) of all
populations was 1.524%, with values ranging 0.714% (TC) to 1.554%
(ECS). All FST values among the 6 populations were significant except
for the ones from the pairs TC-CD, XM-HK, KS-XM, and KS-HK. The
haplotype network was divided into 2 clades: clade I included
individuals from all populations but YZR, and clade II did not include
specimens from CD or TC. Neutrality tests and mismatch distribution
analyses both suggested that this species had experienced a population
expansion. Three distinct groups were yielded by the AMOVA tests,
pair-wise FST
analyses, and the UPGMA tree of the 6 sampled areas. The 1st group
included the ECS, the 2nd contained TC and CD, and the 3rd included the
KS, XM, and HK populations. Based on the continuity of the geographic
position and gene flow, the 2nd and 3rd groups should be considered a
single population.
Key words: Metapenaeopsis barbata, Mitochondrial DNA,
Population structure, Population expansion.
*Correspondence: Tel: 886-7-6158000 ext. 4211. Fax:
886-7-6158000 ext. 4299. E-mail:tdtzeng@stu.edu.tw
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