Population genetic structure, coloration, and morphometrics of yellowhead jawfish Opistognathus aurifrons (Perciformes: Opistognathidae) in the Caribbean region

Marine Ecology Progress Series

Adeljean L. F. C. Ho¹  Christin L. Pruett¹  Junda Lin¹ 

关键词: Caribbean Sea;    Connectivity;    Discriminant Function Analysis;    Fish;    Morphology;    mtDNA;    mtCR;    COI;    Population genetics;   

DOI  :  10.3354/meps09435

学科分类：海洋学与技术

来源: Inter-Research

【 摘 要 】

ABSTRACT: We investigated intraspecific variability in phenotype and population genetic structure of yellowhead jawfish Opistognathus aurifrons from 4 different locations in the Caribbean region: South Florida (USA), Bimini (Bahamas), St. Thomas (US Virgin Islands), and Aruba. Discriminant function analysis (DFA) of 9 melanistic traits in the head region resulted in clear separation between Bimini and the other 3 populations. South Florida, St. Thomas, and Aruba slightly overlapped in patterning, with St. Thomas forming the transition between South Florida and Aruba. DFA of 17 morphometric characters elucidated differentiation among the 4 populations with some overlap between populations. Analysis of concatenated cytochrome c oxidase subunit I (COI) and mitochondrial control region (mtCR) sequences revealed substantial differences among O. aurifrons populations (pairwise Φ_ST = 0.185−0.566), although there was a lack of reciprocal monophyly. Differences in patterning and morphometrics constituted different phenotypes that predominated in each location, with high levels of genetic differentiation between sampled ­populations. Bimini was most divergent in phenotype, while Aruba was most divergent in genetics. As such, variations in phenotype and genetics are not congruent for O. aurifrons investigated in this study.

【 授权许可】

Unknown