title: Molecular phylogenetic relationships of some common sweetlips (Haemulidae: Plectorhynchinae) and the synonyms controversy of two Plectorhinchus species.
abstract: Molecular phylogenetic topologies from 40 individuals of 17 sweetlips were constructed based on the mitochondrial cytochrome b (cyt b) and cytochrome c oxidase subunit I (COI) genes. All phylogenetic results strongly revealed the division of the sweetlips into three morphological distinct groups. Group I: sweetlips with colorful patterns, Group II and Group III: species with uniformly dark patterns. The relationships of those morphologically confused Plectorhinchus species were well-resolved in the phylogenetic results. We also confirmed that the genus Diagramma was placed inside the colorful Plectorhinchus groups, suggesting close relationship of Diagramma within Plectorhinchus. Additionally, we found that two species, P. orientalis and P. vittatus, which were traditionally considered as synonyms for oriental sweetlips, which were suggested to be two distinct species. Sequence divergence also revealed a great genetic variation between P. orientalis and P. vittatus (6.0% in Cyt b and 7.4% in COI), which was largely greater than the species diagnosis divergence value (2%) suggested by Hebert et al. This new finding suggested P. orientalis and P. vittatus might be two distinct species and should not be placed as synonyms.
authors.affiliation: a College of Life Science, Zhongkai University of Agriculture and Engineering , Guangzhou , People's Republic of China .
authors.forename: Rishen
authors.initials: R
authors.lastname: Liang
authors.affiliation: b Qingyuan Animal Husbandry and Fishery Technology Extension Station , Guangzhou , People's Republic of China , and.
authors.forename: Chao
authors.initials: C
authors.lastname: Wang
authors.affiliation: c College of Animal Science, South China Agricultural University , Guangzhou , People's Republic of China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Zou
authors.affiliation: c College of Animal Science, South China Agricultural University , Guangzhou , People's Republic of China.
authors.forename: Aiguo
authors.initials: A
authors.lastname: Zhou
authors.affiliation: a College of Life Science, Zhongkai University of Agriculture and Engineering , Guangzhou , People's Republic of China .
authors.forename: Meng
authors.initials: M
authors.lastname: Zhou
mesh_terms: D000818:Animals; D045303:Cytochromes b / Q000145:classification / Q000235:genetics; D004247:DNA / Q000737:chemistry / Q000302:isolation & purification / Q000378:metabolism; D003576:Electron Transport Complex IV / Q000145:classification / Q000235:genetics; D008928:Mitochondria / Q000235:genetics; D010473:Perciformes / Q000145:classification* / Q000235:genetics; D010802:Phylogeny; D017422:Sequence Analysis, DNA
chemical_list: D004247:DNA; D045303:Cytochromes b; D003576:Electron Transport Complex IV
keywords: Diagrammus; Plectorhinchus; mitochondrial DNA; molecular phylogeney; synonyms