Phylogeny and conservation status of the Indian egg-eater snake, Elachistodon westermanni Reinhardt, 1863 (Serpentes, Colubridae)

in Amphibia-Reptilia
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Abstract

The Indian egg-eater (Elachistodon westermanni) is a monotypic species of the Genus Elachistodon distributed across the Indian sub-continent. In Africa, there are 13 species of egg-eating snakes of the Genus Dasypeltis. These two genera, Elachistodon and Dasypeltis were thought to be closely related due to similar diet specialization, and shared biogeographic history between the Indian sub-continent and the continent of Africa. In our study, we amplified three mitochondrial genes and one nuclear gene from E. westermanni and reconstructed molecular phylogeny utilizing published sequences to understand the evolutionary relationships between the African, and the Indian egg-eating snakes. We used morphological characters to reinforce our inferences on phylogenetic relationships. We show that the Indian egg-eater is sister to cat snakes of the Genus Boiga, and it does not share recent ancestry with the African egg-eating snakes. Morphological character states point at similarities between Elachistodon and Dasypeltis only in characters associated with their feeding behaviour. Elachistodon westermanni was similar to the Boiga spp. in several other morphological characters, and we provisionally assign E. westermanni under the genus Boiga. Compilation of records of E. westermanni across the Indian sub-continent over the years revealed a positive “Lazarus” effect. We conclude that, the egg-eating behaviour and the associated morphological characters in the snake genera Dasypeltis and Elachistodon are a result of convergent evolution. Based on the conservation status of E. westermanni, it could serve as a flagship species to conserve important wildlife habitats that are being lost rapidly in India.

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Phylogeny and conservation status of the Indian egg-eater snake, Elachistodon westermanni Reinhardt, 1863 (Serpentes, Colubridae)

in Amphibia-Reptilia

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References

ArèvaloE.DavisS.K.Sites JrJ.W. (1994): Mitochondrial DNA sequence divergence and phylogenetic relationships among eight chromosome races of the Sceloporus grammicus complex (Phrynosomatidae) in central Mexico. Systematic Biology 43 (3): 387-418.

CaptainA.TillackF.GumprechtA.DandgeP. (2005): First record of Elachistodon westermanni Reinhardt, 1863 (Serpentes, Colubridae, Colubrinae) from Maharashtra state, India. Russ. J. Herpetol. 12: 121-123.

DandgeP.H. (2008): Food and feeding habits of Elachistodon westermanni Reinhardt, 1863. Hamadryad 32: 75-77.

DandgeP.H.Tiple A.D. (2016): Notes on natural history, new distribution records and threats of Indian Egg Eater Snake Elachistodon westermanni Reinhardt, 1863 (Serpentes: Colubridae): Implications for conservation. Russ. J. Herpetol. 23: 55-62.

DawsonM.R.MarivauxL.LiC.BeardK.C.MétaisG. (2006): Laonastes and the “lazarus effect” in recent mammals. Science 311 (5766): 1456-1458.

EdgarR.C. (2004): MUSCLE: multiple sequence alignment with high accuracy and high throughput. Nucleic Acids Res. 32: 1792-1797.

FigueroaA.McKelvyA.D.GrismerL.L.BellC.D.LailvauxS.P. (2016): A species-level phylogeny of extant snakes with description of a new colubrid subfamily and genus. PloS One. 11 (9): e0161070.

GansC.WilliamsE.E. (1954): Present knowledge of the snake Elachistodon westermanni Reinhardt, 1863. Bevoria 36: 1-17.

HeiseP.J.MaxsonL.R.DowlingH.G.HedgesS.B. (1995): Higher-level snake phylogeny inferred from mitochondrial DNA sequences of 12S rRNA and 16S rRNA genes. Mol. Biol. Evol. 12: 259-265.

HuelsenbeckJ.P.RonquistF. (2001): MrBayes: Bayesian inference of phylogeny. Bioinformatics 17: 754-755.

KhandalD.SahuY.K.SharmaV. (2016): New record of Elachistodon westermanni Reinhardt, 1863 (Serpentes, Colubridae) for Rajasthan state, India. Russ. J. Herpetol. 23: 249-253.

KnightA.MindellD.P. (1993): Substitution bias, weighting of DNA sequence evolution, and the phylogenetic position of Fea’s viper. Syst. Biol. 42: 18-31.

LanfearR.CalcottB.HoS.Y.GuindonS. (2012): Partition finder: combined selection of partitioning schemes and substitution models for phylogenetic analyses. Mol. Biol. Evol. 29 (6): 1695-1701.

LawsonR.SlowinskiJ.B.CrotherB.I.BurbrinkF.T. (2005): Phylogeny of the Colubroidea (Serpentes): new evidence from mitochondrial and nuclear genes. Mol. Phylogenet. Evol. 37: 581-601.

MeijaardE.NijmanV. (2014): Secrecy considerations for conserving lazarus species. Biol. Conserv. 175: 21-24.

NylanderJ.A.A.RonquistF.HuelsenbeckJ.P.Nieves-AldkreyJ.L. (2004): Bayesian phylogenetic analysis of combined data. Syst. Biol. 53: 47-67.

ParkinsonC.L.CampbellJ.A.ChippindaleP.T. (2002): Multigene phylogenetic analyses of pitvipers; with comments on the biogeographical history of the group. In: Biology of the Vipers p. 93-110. SchuettG.W.HöggrenM.DouglasM.E.GreeneH.W. Eds Eagle Mountain PublishingSalt Lake City, UT.

PyronR.A.BurbrinkF.T.WiensJ.J. (2013): A phylogeny and revised classification of Squamata, including 4161 species of lizards and snakes. BMC Evol. Biol. 13: 93.

RambautA.SuchardM.A.XieD.DrummondA.J. (2014): Tracer v1.6 Available from http://tree.bio.ed.ac.uk/software/tracer/.

ReinhardtJ. (1863): Om en ny slaegt af slangefamilien Rachiodontidae [on a new genus of snake family Rachiodontidae]. Oversigt over det Kongelige danske Videnskabernes Selskabs Forhandlinger. 1: 198-210.

RonquistF.HuelsenbeckJ.P. (2003): MrBayes 3: Bayesian phylogenetic inference under mixed models. Bioinformatics 19: 1572-1574.

SambrookJ.FritschE.F.ManiatisT. (1989): Molecular Cloning. Cold Spring Harbor Laboratory PressNew York.

SangerF.NicklenS.CoulsonA.R. (1977): DNA sequencing with chain-terminating inhibitors. Proc. Nat. Acad. Sci. 74: 5463-5467.

SharmaR.C. (2004): Handbook of Indian Snakes. Akhil BooksNew Delhi.

SilvestroD.MichalakI. (2012): raxmlGUI: a graphical front-end for RAxML. Org. Divers. Evol. 12: 335-337.

TamuraK.PetersonD.PetersonN.StecherG.NeiM.KumarS. (2011): MEGA5: molecular evolutionary genetics analysis using maximum likelihood, evolutionary distance, and maximum parsimony methods. Mol. Biol. Evol. 28: 2731-2739.

UetzP. (2010): The original descriptions of reptiles. Zootaxa 2334: 59-68.

VaidyaG.LohmanD.J.MeierR. (2011): Sequence matrix: concatenation software for the fast assembly of multi-gene datasets with character set and codon information. Cladistics 27: 171-180.

VisvanathanA.C. (2015): Natural history notes on Elachistodon westermanni Reinhardt, 1863. Hamadryad 37: 132-136.

VyasR. (2006): Story of a snake’s photograph from Gujarat and notes on further distribution of the Indian egg-eater snake. Herpinstance 3: 1-4.

VyasR. (2010): Distribution of Elachistodon westermanni in Gujarat. Reptile Rap 10: 7-8.

VyasR. (2013): Notes and comments on distribution of a snake: Indian Egg Eater (Elachistodon westermanni). Russ. J. Herpetol. 20: 39-42.

Figures

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    Elachistodon westermanni rescued at Patancheru, Medak District, Telangana, India by the Friends of Snakes Society, Hyderabad. Photographed by Karthikeyan Vasudevan.

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    Molecular phylogeny tree with species of the genera: Dasypeltis, Elachistodon and Boiga derived from (a) Maximum Likelihood method; (b) Bayesian method.

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    Morphological character state comparison of the genera: Dasypeltis, Elachistodon and Boiga.

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    Locality records of Elachistodon westermanni (Reinhardt, 1863) – details of the records of occurrence are found in Supplementary table S4.

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