Evolutionary relationships of the Critically Endangered frog Ericabatrachus baleensisLargen, 1991 with notes on incorporating previously unsampled taxa into large-scale phylogenetic analysesReportar como inadecuado




Evolutionary relationships of the Critically Endangered frog Ericabatrachus baleensisLargen, 1991 with notes on incorporating previously unsampled taxa into large-scale phylogenetic analyses - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

BMC Evolutionary Biology

, 14:44

Phylogenetics and phylogeography

Abstract

BackgroundThe phylogenetic relationships of many taxa remain poorly known because of a lack of appropriate data and-or analyses. Despite substantial recent advances, amphibian phylogeny remains poorly resolved in many instances. The phylogenetic relationships of the Ethiopian endemic monotypic genus Ericabatrachus has been addressed thus far only with phenotypic data and remains contentious.

ResultsWe obtained fresh samples of the now rare and Critically Endangered Ericabatrachus baleensis and generated DNA sequences for two mitochondrial and four nuclear genes. Analyses of these new data using de novo and constrained-tree phylogenetic reconstructions strongly support a close relationship between Ericabatrachus and Petropedetes, and allow us to reject previously proposed alternative hypotheses of a close relationship with cacosternines or Phrynobatrachus.

ConclusionsWe discuss the implications of our results for the taxonomy, biogeography and conservation of E. baleensis, and suggest a two-tiered approach to the inclusion and analyses of new data in order to assess the phylogenetic relationships of previously unsampled taxa. Such approaches will be important in the future given the increasing availability of relevant mega-alignments and potential framework phylogenies.

KeywordsAfrica Amphibia Eastern Afromontane Ethiopia Petropedetes phylogenetics Abbreviations12S12SrRNA

16S16SrRNA

28S28SrRNA

H3Ahistone 3a

RAG1recombinase activating protein 1

cytbcytochrome b

CXCR4C-X-C chemokine receptor type 4

SLC8A1solute-carrier family 8 member 1

POMCpro-opiomelanocortin

RHODrhodopsin

SIAseventh-in-absentia

SLC8A3solute-carrier family 8 member 3

TYRtyrosinase

HKY85Hasegawa-Kishino-Yano 85 model

GGamma

MLMaximum Likelihood

GTRGeneral Time Reversible model

CATBayesian site-heterogeneous model

AUApproximately Unbiased

BRBootstrap replicates

pp-value

MS222Tricaine methanesulfonate

ZNHM-AAUZoological Natural History Museum of Addis Ababa University, Ethiopia.

Electronic supplementary materialThe online version of this article doi:10.1186-1471-2148-14-44 contains supplementary material, which is available to authorized users.

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Autor: Karen Siu-Ting - David J Gower - Davide Pisani - Roman Kassahun - Fikirte Gebresenbet - Michele Menegon - Abebe A Mengist

Fuente: https://link.springer.com/







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