The phylogenetic position of an undescribed paedomorphic clupeiform taxon: mitogenomic evidence |
| |
Authors: | Sébastien Lavoué Masaki Miya Akira Kawaguchi Tetsuo Yoshino Mutsumi Nishida |
| |
Institution: | (1) Department of Marine Bioscience, Ocean Research Institute, The University of Tokyo, 1-15-1 Minamidai, Nakano-ku, Tokyo 164-8639, Japan;(2) Department of Zoology, Natural History Museum and Institute, Chiba, 955-2 Aoba-cho, Chuo-ku, Chiba 260-8682, Japan;(3) Department of Marine Sciences, Faculty of Science, University of the Ryukyus, 1 Senbaru, Okinawa 903-0213, Japan |
| |
Abstract: | Molecular characters may offer a useful alternative to confidently estimate the phylogenetic position of paedomorphic taxa
otherwise difficult to place based on morphology because of the reduction or absence of characters in their larvae-like adult
stage. Here, we sequenced the complete mitogenome of a remarkable undescribed marine paedomorphic clupeiform fish to gain
insight into its phylogenetic position. Of a length of 17,507 bp, this mitogenome exhibits a unique gene order within the
Teleostei because of the inversion of the contiguous tRNAGln and tRNAIle within the IQM region and the presence of a putative second control region inserted between these tRNAs. Mitogenomic data
from 27 clupeiform species and 22 non-clupeiform species were subjected to partitioned maximum likelihood and Bayesian analyses.
All resultant phylogenetic trees strongly supported the placement of this undescribed taxon within the order Clupeiformes,
suborder Clupeoidei, and the family Clupeidae, as the sister group of the tribe Spratelloidini (Jenkinsia + Spratelloides) of the subfamily Dussumieriinae. Together, they form a monophyletic group with Chirocentrus and, possibly, Etrumeus. Despite its overall resemblance to Sundasalanx, this undescribed taxa (Clupeidae gen. et sp. indet.) is not closely related to that genus and represents an independent
paedomorphic lineage within the Clupeoidei.
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. |
| |
Keywords: | Mitogenomics Evolution Paedomorphism Clupeiformes |
本文献已被 SpringerLink 等数据库收录! |
|