Distinguishing between two sympatric Acanthopagrus species from Dapeng Bay, Taiwan, using morphometric and genetic characters

in Sciences Citation Index(SCI), 科學引文索引資料庫(SCI)
標題Distinguishing between two sympatric Acanthopagrus species from Dapeng Bay, Taiwan, using morphometric and genetic characters
出版類型SCI(Sciences Citation Index)
出版年度2009
AuthorsMei-Chen Tseng, 曾美珍, C. T. Jean 簡春潭, W. L. Tsai 蔡宛霖, & Nyen-Ts Chen 陳念慈
開始頁357
頁數19
出版日期2009 / 2
其他編號95-2313-B-020-020
中文摘要

Morphometric and genetic data were used to compare two sympatric and morphologically-similar species, Acanthopagrus berda and A. taiwanensis, in Dapeng Bay, southwestern Taiwan. Principle components analysis (PCA) of morphological data indicated distinction between the two species, with pectoral fin length and eye diameter being diagnostic characters accounting for around 32.27% of variation. The interspecific genetic distance of the cytochrome (Cyt) b gene (0.118±???????0.01) was higher than the respective intraspecific distances (0.007 for A. taiwanensis and 0.003 for A. berda). Both species were separately clustered in different groups on three phylogenetic trees with 100% bootstrapping values. The mean observed heterozygosity (HO) values of eight microsatellite loci were 0.471±0.04 for A. taiwanensis and 0.637 for A. berda. Nei's unbiased measure of interspecific genetic identity (I) was 0.263, and the genetic distance (Ds) was 1.334. FST (0.134) and RST (0.404) values indicated significant differentiation. An unrooted Neighbor-joining tree was constructed by allele sharing distances, and the factorial correspondence analysis split all specimens into two distinct clusters. All results of the morphometric, mitochondrial DNA, and microsatellite analyses suggested significant differentiation and confirmed the presence of two species, A. taiwanensis and A. berda.

期刊名稱Journal of Fish Biology
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