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- Title
High Sequence Variations in Mitochondrial DNA Control Region among Worldwide Populations of Flathead Mullet Mugil cephalus.
- Authors
Jamandre, Brian Wade; Durand, Jean-Dominique; Tzeng, Wann-Nian
- Abstract
The sequence and structure of the complete mtDNA control region (CR) of M. cephalus from African, Pacific, and Atlantic populations are presented in this study to assess its usefulness in phylogeographic studies of this species. ThemtDNA CR sequence variations among M. cephalus populations largely exceeded intraspecific polymorphisms that are generally observed in other vertebrates. The length of CR sequence varied among M. cephalus populations due to the presence of indels and variable number of tandem repeats at the 3' hypervariable domain. The high evolutionary rate of the CR in this species probably originated from these mutations. However, no excessive homoplasic mutations were noticed. Finally, the star shaped tree inferred from the CR polymorphism stresses a rapid radiation worldwide, in this species. The CR still appears as a good marker for phylogeographic investigations and additional worldwide samples are warranted to further investigate the genetic structure and evolution in M. cephalus.
- Subjects
MITOCHONDRIAL DNA; NUCLEOTIDE sequence; BIOLOGICAL variation; STRIPED mullet; ANIMAL populations; PHYLOGEOGRAPHY
- Publication
International Journal of Zoology, 2014, p1
- ISSN
1687-8477
- Publication type
Article
- DOI
10.1155/2014/564105