Universität zu Köln

Duong, Ha T., Dinh, Long D., Nguyen, Truong Q., Pritchard, Peter C. H. and McCormack, Timothy (2014). A phylogeny of softshell turtles (Testudines: Trionychidae) with reference to the taxonomic status of the critically endangered, giant softshell turtle, Rafetus swinhoei. Org. Divers. Evol., 14 (3). S. 279 - 294. HEIDELBERG: SPRINGER HEIDELBERG. ISSN 1618-1077

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Abstract

Several important aspects of the evolution of the softshell turtle (family Trionychidae) have not been addressed thoroughly in previous studies, including the pattern and timing of diversification of major clades and species boundaries of the critically endangered Shanghai Softshell Turtle, Rafetus swinhoei. To address these issues, we analyzed data from two mitochondrial loci (cytochrome b and ND4) and one nuclear intron (R35) for all species of trionychid turtles, except Pelochelys signifera, and for all known populations of Rafetus swinhoei in Vietnam and one from China. Phylogenetic analyses using three methods (maximum parsimony, maximum likelihood, and Bayesian inference) produce a well resolved and strongly supported phylogeny. The results of our time-calibration and biogeographic optimization analyses show that trionychid dispersals out of Asia took place between 45 and 49 million years ago in the Eocene. Interestingly, the accelerated rates of diversification and dispersal within the family correspond surprisingly well to global warming periods between the mid Paleocene and the early Oligocene and from the end of the Oligocene to the mid Miocene. Our study also indicates that there is no significant genetic divergence among monophyletic populations of Rafetus swinhoei, and that previous taxonomic revision of this species is unwarranted.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Duong, Ha T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Dinh, Long D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nguyen, Truong Q. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pritchard, Peter C. H. UNSPECIFIED UNSPECIFIED UNSPECIFIED McCormack, Timothy UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-430736
DOI:	10.1007/s13127-014-0169-3
Journal or Publication Title:	Org. Divers. Evol.
Volume:	14
Number:	3
Page Range:	S. 279 - 294
Date:	2014
Publisher:	SPRINGER HEIDELBERG
Place of Publication:	HEIDELBERG
ISSN:	1618-1077
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MOLECULAR PHYLOGENY; DNA-SEQUENCES; DISPERSAL; DIVERSIFICATION; REPTILIA; PHYLOGEOGRAPHY; CONFIDENCE; NIGRICANS; VALIDITY; AMERICA Multiple languages Evolutionary Biology; Zoology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/43073