@ARTICLE{TreeBASE2Ref24021,
author = {David J. Gower and Ishan Agarwal and K. Praveen Karanth and Aniruddha Datta-Roy and Varad B. Giri and Mark Wilkinson and Diego San Mauro},
title = {The role of wet-zone fragmentation in shaping biodiversity patterns in peninsular India: insights from the caecilian amphibian Gegeneophis},
year = {2016},
keywords = {biogeography, caecilian, Gegeneophis orientalis, Miocene, molecular dating, phylogeny, Pleistocene, rain forest, Seychelles, wet zone},
doi = {10.1111/jbi.12710},
url = {},
pmid = {},
journal = {Journal of Biogeography},
volume = {43},
number = {},
pages = {1091--1102},
abstract = {Aim: Indian biodiversity is concentrated in the wet zone, which is disjunctly distributed in the north-east and in the peninsular Western and Eastern Ghats. The Eastern Ghats region is smaller and less well explored biologically and the affinities and origins of its biota poorly understood. Our aim was to assess whether divergence between east and west lineages might have been caused by fragmentation of the wet zone during Pleistocene climatic fluctuations, by Late Miocene wet-zone contraction or by more ancient events. We present the first dated phylogenetic test of these alternatives by inferring relationships and dating divergences within a wet-zone-restricted lineage endemic to the Eastern and Western Ghats.
Location: The Eastern and Western Ghats regions of peninsular India.
Methods: Molecular genetic data (one nuclear and four mitochondrial genes) were newly generated for the only known Eastern Ghats teresomatan caecilian amphibian (Gegeneophis orientalis) and the only Western Ghats congener (G. pareshi) for which molecular data were not previously available. Phylogenetic relationships were inferred for Indian indotyphlids using maximum likelihood and Bayesian inference methods. Divergence times within the inferred phylogeny were estimated using a Bayesian relaxed clock method, with the Seychelles versus Indian indotyphlid divergence calibrated based on the geological separation of their respective continental land masses.
Results: The single Eastern Ghats species of Gegeneophis is sister to all other (Western Ghats) Gegeneophis. The basalmost (and east?west) split within Gegeneophis likely occurred > 35 Ma.
Main conclusions: Divergence between Eastern and Western Ghats Gegeneophis is too ancient to have been caused by wet-zone contraction in the Miocene or by Pleistocene climatic fluctuations. Our results are consistent with a relatively ancient origin of wet-zone lineages in the Eastern Ghats and a lack of gene flow between Eastern and Western Ghats Gegeneophis for tens of millions of years.}
}
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Citation title: "The role of wet-zone fragmentation in shaping biodiversity patterns in peninsular India: insights from the caecilian amphibian Gegeneophis".
Study name: "The role of wet-zone fragmentation in shaping biodiversity patterns in peninsular India: insights from the caecilian amphibian Gegeneophis".
This study is part of submission 16858
(Status: Published).
Citation
Gower D., Agarwal I., Karanth K.P., Datta-roy A., Giri V.B., Wilkinson M., & San mauro D. 2016. The role of wet-zone fragmentation in shaping biodiversity patterns in peninsular India: insights from the caecilian amphibian Gegeneophis. Journal of Biogeography, 43: 1091-1102.
Authors
Gower D.
Agarwal I.
Karanth K.P.
Datta-roy A.
+919483507715
Giri V.B.
Wilkinson M.
San mauro D.
(submitter)
Abstract
Aim: Indian biodiversity is concentrated in the wet zone, which is disjunctly distributed in the north-east and in the peninsular Western and Eastern Ghats. The Eastern Ghats region is smaller and less well explored biologically and the affinities and origins of its biota poorly understood. Our aim was to assess whether divergence between east and west lineages might have been caused by fragmentation of the wet zone during Pleistocene climatic fluctuations, by Late Miocene wet-zone contraction or by more ancient events. We present the first dated phylogenetic test of these alternatives by inferring relationships and dating divergences within a wet-zone-restricted lineage endemic to the Eastern and Western Ghats.
Location: The Eastern and Western Ghats regions of peninsular India.
Methods: Molecular genetic data (one nuclear and four mitochondrial genes) were newly generated for the only known Eastern Ghats teresomatan caecilian amphibian (Gegeneophis orientalis) and the only Western Ghats congener (G. pareshi) for which molecular data were not previously available. Phylogenetic relationships were inferred for Indian indotyphlids using maximum likelihood and Bayesian inference methods. Divergence times within the inferred phylogeny were estimated using a Bayesian relaxed clock method, with the Seychelles versus Indian indotyphlid divergence calibrated based on the geological separation of their respective continental land masses.
Results: The single Eastern Ghats species of Gegeneophis is sister to all other (Western Ghats) Gegeneophis. The basalmost (and east?west) split within Gegeneophis likely occurred > 35 Ma.
Main conclusions: Divergence between Eastern and Western Ghats Gegeneophis is too ancient to have been caused by wet-zone contraction in the Miocene or by Pleistocene climatic fluctuations. Our results are consistent with a relatively ancient origin of wet-zone lineages in the Eastern Ghats and a lack of gene flow between Eastern and Western Ghats Gegeneophis for tens of millions of years.
@ARTICLE{TreeBASE2Ref24021,
author = {David J. Gower and Ishan Agarwal and K. Praveen Karanth and Aniruddha Datta-Roy and Varad B. Giri and Mark Wilkinson and Diego San Mauro},
title = {The role of wet-zone fragmentation in shaping biodiversity patterns in peninsular India: insights from the caecilian amphibian Gegeneophis},
year = {2016},
keywords = {biogeography, caecilian, Gegeneophis orientalis, Miocene, molecular dating, phylogeny, Pleistocene, rain forest, Seychelles, wet zone},
doi = {10.1111/jbi.12710},
url = {},
pmid = {},
journal = {Journal of Biogeography},
volume = {43},
number = {},
pages = {1091--1102},
abstract = {Aim: Indian biodiversity is concentrated in the wet zone, which is disjunctly distributed in the north-east and in the peninsular Western and Eastern Ghats. The Eastern Ghats region is smaller and less well explored biologically and the affinities and origins of its biota poorly understood. Our aim was to assess whether divergence between east and west lineages might have been caused by fragmentation of the wet zone during Pleistocene climatic fluctuations, by Late Miocene wet-zone contraction or by more ancient events. We present the first dated phylogenetic test of these alternatives by inferring relationships and dating divergences within a wet-zone-restricted lineage endemic to the Eastern and Western Ghats.
Location: The Eastern and Western Ghats regions of peninsular India.
Methods: Molecular genetic data (one nuclear and four mitochondrial genes) were newly generated for the only known Eastern Ghats teresomatan caecilian amphibian (Gegeneophis orientalis) and the only Western Ghats congener (G. pareshi) for which molecular data were not previously available. Phylogenetic relationships were inferred for Indian indotyphlids using maximum likelihood and Bayesian inference methods. Divergence times within the inferred phylogeny were estimated using a Bayesian relaxed clock method, with the Seychelles versus Indian indotyphlid divergence calibrated based on the geological separation of their respective continental land masses.
Results: The single Eastern Ghats species of Gegeneophis is sister to all other (Western Ghats) Gegeneophis. The basalmost (and east?west) split within Gegeneophis likely occurred > 35 Ma.
Main conclusions: Divergence between Eastern and Western Ghats Gegeneophis is too ancient to have been caused by wet-zone contraction in the Miocene or by Pleistocene climatic fluctuations. Our results are consistent with a relatively ancient origin of wet-zone lineages in the Eastern Ghats and a lack of gene flow between Eastern and Western Ghats Gegeneophis for tens of millions of years.}
}
TY - JOUR
ID - 24021
AU - Gower,David J.
AU - Agarwal,Ishan
AU - Karanth,K. Praveen
AU - Datta-Roy,Aniruddha
AU - Giri,Varad B.
AU - Wilkinson,Mark
AU - San Mauro,Diego
T1 - The role of wet-zone fragmentation in shaping biodiversity patterns in peninsular India: insights from the caecilian amphibian Gegeneophis
PY - 2016
KW - biogeography
KW - caecilian
KW - Gegeneophis orientalis
KW - Miocene
KW - molecular dating
KW - phylogeny
KW - Pleistocene
KW - rain forest
KW - Seychelles
KW - wet zone
UR -
N2 - Aim: Indian biodiversity is concentrated in the wet zone, which is disjunctly distributed in the north-east and in the peninsular Western and Eastern Ghats. The Eastern Ghats region is smaller and less well explored biologically and the affinities and origins of its biota poorly understood. Our aim was to assess whether divergence between east and west lineages might have been caused by fragmentation of the wet zone during Pleistocene climatic fluctuations, by Late Miocene wet-zone contraction or by more ancient events. We present the first dated phylogenetic test of these alternatives by inferring relationships and dating divergences within a wet-zone-restricted lineage endemic to the Eastern and Western Ghats.
Location: The Eastern and Western Ghats regions of peninsular India.
Methods: Molecular genetic data (one nuclear and four mitochondrial genes) were newly generated for the only known Eastern Ghats teresomatan caecilian amphibian (Gegeneophis orientalis) and the only Western Ghats congener (G. pareshi) for which molecular data were not previously available. Phylogenetic relationships were inferred for Indian indotyphlids using maximum likelihood and Bayesian inference methods. Divergence times within the inferred phylogeny were estimated using a Bayesian relaxed clock method, with the Seychelles versus Indian indotyphlid divergence calibrated based on the geological separation of their respective continental land masses.
Results: The single Eastern Ghats species of Gegeneophis is sister to all other (Western Ghats) Gegeneophis. The basalmost (and east?west) split within Gegeneophis likely occurred > 35 Ma.
Main conclusions: Divergence between Eastern and Western Ghats Gegeneophis is too ancient to have been caused by wet-zone contraction in the Miocene or by Pleistocene climatic fluctuations. Our results are consistent with a relatively ancient origin of wet-zone lineages in the Eastern Ghats and a lack of gene flow between Eastern and Western Ghats Gegeneophis for tens of millions of years.
L3 - 10.1111/jbi.12710
JF - Journal of Biogeography
VL - 43
IS -
SP - 1091
EP - 1102
ER -
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Citation title: "The role of wet-zone fragmentation in shaping biodiversity patterns in peninsular India: insights from the caecilian amphibian Gegeneophis".
+919483507715
10.1111/jbi.12710
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