Population structure and genetic variability of six bar wrasse (Thallasoma hardwicki) in northern South China Sea revealed by mitochondrial control region sequences

Chaolun Allen Chen, Maria Carmen Anonuevo Ablan, John McManus, Johann Diepernk Bell, Vo Si Tuan, Annadel Sarmiento Cabanban, Kwang Tsao Shao

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

The genetic relationships among northern South China Sea populations of the six bar wrasse (Thallasoma hardwicki) were investigated. Fish collected from the Solomon Islands were used for geographic comparison. In 1998 and 1999, a total of 100 fish were sampled from 6 localities of the northern South China Sea and 3 localities of the Solomon Islands. Genetic variations in DNA sequences were examined from the first hypervariable region (HVR-1) of the mitochondrial control region, as amplified by polymerase chain reaction. High levels of haplotypic diversity (h = 0.944 ± 0.0016, π = 0.0224 ± 0.01171) in the HVR-1 region of the mitochondrial control region of T. hardwicki were detected. This yielded 94 haplotypes that exhibited a minimum spanning tree with a starburst structure, suggestive of a very recent origin for most haplotypes. Neutrality tests indicated that the pattern of genetic variability in T. hardwicki is consistent either with genetic hitchhiking by an advantageous mutation or with population expansion. Partitioning populations into coherent geographic groups divided the northern South China Sea samples (Φ;CT = 0.0313, P < 0.001) into 3 major groups: a north-central group composed of northwestern Taiwan and northern Vietnam; a southwestern group containing southern Vietnam; and a southern group including the central Philippines. These results are in concordance with mesoscale boundaries proposed by allozyme markers, thus highlighting the importance of identifying transboundary units for the conservation and management of fisheries in the South China Sea.

Original languageEnglish
Pages (from-to)312-326
Number of pages15
JournalMarine Biotechnology
Volume6
Issue number4
DOIs
StatePublished - Aug 1 2004
Externally publishedYes

Fingerprint

Labridae
South China Sea
Population Genetics
Oceans and Seas
Fish
population genetics
population structure
Solomon Islands
China
Melanesia
Vietnam
genetic variation
Fisheries
Polymerase chain reaction
DNA sequences
haplotypes
Haplotypes
Isoenzymes
Conservation
Fishes

Keywords

  • Demographic history
  • Mitochondrial control region
  • Population structure
  • South China Sea
  • Thallasoma hardwicki

ASJC Scopus subject areas

  • Aquatic Science
  • Biotechnology
  • Biochemistry

Cite this

Population structure and genetic variability of six bar wrasse (Thallasoma hardwicki) in northern South China Sea revealed by mitochondrial control region sequences. / Chen, Chaolun Allen; Ablan, Maria Carmen Anonuevo; McManus, John; Bell, Johann Diepernk; Tuan, Vo Si; Cabanban, Annadel Sarmiento; Shao, Kwang Tsao.

In: Marine Biotechnology, Vol. 6, No. 4, 01.08.2004, p. 312-326.

Research output: Contribution to journalArticle

Chen, Chaolun Allen ; Ablan, Maria Carmen Anonuevo ; McManus, John ; Bell, Johann Diepernk ; Tuan, Vo Si ; Cabanban, Annadel Sarmiento ; Shao, Kwang Tsao. / Population structure and genetic variability of six bar wrasse (Thallasoma hardwicki) in northern South China Sea revealed by mitochondrial control region sequences. In: Marine Biotechnology. 2004 ; Vol. 6, No. 4. pp. 312-326.
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