Abstract
Phylogenetic relationships of 43 species in 11 genera, representing four subfamilies of the family Lutjanidae and two genera of the family Caesionidae, were inferred using mitochondrial DNA (mtDNA) cytochrome c oxidase subunit I (COI). Further assessment using the mtDNA control region (CR) was carried out to infer the relationship between the Indian and western Pacific types of Lutjanus russellii collected from the coast of Peninsular Malaysia. A total of 11 and 12 species were sequenced for COI and CR genes, respectively. Clade formation reflects, to some extent, the species groupings based on morphological characteristics and their biogeography. The close phylogenetic relationship between Pinjalo pinjalo and the Lutjanus red snappers (Lutjanus malabaricus and Lutjanus sebae) warrants a taxonomic revision of the former as the two genera are currently separated based on non-exclusive morphological characters. A sequence divergence of 4.2% between the Indian and western Pacific types of L. russellii as well as the morphological and biogeographical differences may suggest two separate species.
Highlights
About 112 species of snappers are reported to exist in the warm seas of the Indian Ocean and the tropical and subtropical parts of the western Pacific Ocean (Masuda 1984)
A total of 48 c oxidase subunit I (COI) sequences were directly obtained from this study, disregarding two specimens of L. argentimaculatus that failed to amplify for COI
Despite having fewer taxa in the control region (CR) phylogeny, we found that affinities between species are congruent with those inferred by COI
Summary
About 112 species of snappers (family Lutjanidae) are reported to exist in the warm seas of the Indian Ocean and the tropical and subtropical parts of the western Pacific Ocean (Masuda 1984). Lutjaninae is composed of the genera Lutjanus, Pinjalo, Macolor, Ocyurus, and Rhomboplites, the last two being monotypic genera found only in western Atlantic waters (Allen 1985). El género Lutjanus presenta la mayor diversidad de especies, con 64 del total de 72 especies de la subfamilia Lutjaninae (Anderson y Allen 2001). Esta subfamilia está compuesta por los géneros Lutjanus, Pinjalo, Macolor, Ocyurus y Rhomboplites, los últimos dos siendo géneros monotípicos que sólo se encuentran en aguas del Atlántico occidental (Allen 1985). Los pargos de Malasia están representados por 38 especies pertenecientes a 10 géneros, entre ellos Lutjanus, Pinjalo y Macolor (Chong et al 2010)
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