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Sidharthan C, Roy P, Narayanan S, Karanth KP. A widespread commensal loses its identity: suggested taxonomic revision for Indotyphlops braminus (Scolecophidia: Typhlopidae) based on molecular data. ORG DIVERS EVOL 2022. [DOI: 10.1007/s13127-022-00577-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Sil M, Mahveen J, Roy A, Karanth KP, Aravind NA. Insight into the evolutionary history of Indoplanorbis exustus (Bulinidae: Gastropoda) at the scale of population and species. Biol J Linn Soc Lond 2022. [DOI: 10.1093/biolinnean/blac062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
The history of a lineage is intertwined with the history of the landscape it inhabits. Here we showcase how the geo-tectonic and climatic evolution of South Asia and surrounding landmasses have shaped the biogeographical history of Indoplanorbis exustus, a tropical Asian, freshwater snail. We amplified partial COI gene fragments from all over India and combined this with a larger dataset from South and Southeast Asia to carry out phylogenetic reconstruction, species delimitation analysis and population genetic analyses. Two nuclear genes were also amplified from a few individuals per putative species to carry out divergence dating and ancestral area reconstruction analyses. The results suggest that I. exustus dispersed out of Africa into India during the Eocene. Furthermore, molecular data suggest I. exustus is a species complex consisting of multiple putative species. Primary diversification took place in the Northern Indian plains or in Northeast India. The speciation events appear to be primarily allopatric caused by a series of aridification events starting from the late Miocene to early Pleistocene. None of the species appears to have any underlying genetic structure suggestive of high vagility. All the species underwent population fluctuations during the Pleistocene, probably driven by the Quaternary climatic fluctuations.
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Affiliation(s)
- Maitreya Sil
- SMS Foundation Centre for Biodiversity and Conservation, Ashoka Trust for Research in Ecology and the Environment , Royal Enclave, Sriramapura, Jakkur PO, Bangalore 560064 , India
| | - Juveriya Mahveen
- SMS Foundation Centre for Biodiversity and Conservation, Ashoka Trust for Research in Ecology and the Environment , Royal Enclave, Sriramapura, Jakkur PO, Bangalore 560064 , India
- Department of Microbiology, St. Joseph’s College , Bangalore 560027 , India
| | - Abhishikta Roy
- SMS Foundation Centre for Biodiversity and Conservation, Ashoka Trust for Research in Ecology and the Environment , Royal Enclave, Sriramapura, Jakkur PO, Bangalore 560064 , India
| | - K Praveen Karanth
- Centre for Ecological Sciences, Indian Institute of Science , Bangalore 560012 , India
| | - N A Aravind
- SMS Foundation Centre for Biodiversity and Conservation, Ashoka Trust for Research in Ecology and the Environment , Royal Enclave, Sriramapura, Jakkur PO, Bangalore 560064 , India
- Yenepoya Research Centre, Yenepoya (deemed to be University) , University Road, Derlakatte, Mangalore 575018 , India
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Wickramasinghe N, Wickramasinghe LJM, Vidanapathirana DR, Tennakoon KH, Samarakoon SR, Gower DJ. A molecular-genetics perspective on the systematics of the parthenogenetic flowerpot blindsnake Indotyphlops braminus (Daudin, 1803) (Squamata: Serpentes: Typhlopidae). SYST BIODIVERS 2022. [DOI: 10.1080/14772000.2022.2062478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Nethu Wickramasinghe
- Institute of Biochemistry, Molecular Biology, and Biotechnology, University of Colombo, 90, Thurstan Road, Colombo 3, Colombo, 00300, Sri Lanka
- Department of Herpetology, Herpetological Foundation of Sri Lanka, 31/5, Alwis Town, Hendala, Wattala, Sri Lanka
| | - L. J. Mendis Wickramasinghe
- Department of Herpetology, Herpetological Foundation of Sri Lanka, 31/5, Alwis Town, Hendala, Wattala, Sri Lanka
| | - Dulan Ranga Vidanapathirana
- Department of Herpetology, Herpetological Foundation of Sri Lanka, 31/5, Alwis Town, Hendala, Wattala, Sri Lanka
| | - Kamani H. Tennakoon
- Institute of Biochemistry, Molecular Biology, and Biotechnology, University of Colombo, 90, Thurstan Road, Colombo 3, Colombo, 00300, Sri Lanka
| | - Sameera R. Samarakoon
- Institute of Biochemistry, Molecular Biology, and Biotechnology, University of Colombo, 90, Thurstan Road, Colombo 3, Colombo, 00300, Sri Lanka
| | - David J. Gower
- Department of Life Sciences, The Natural History Museum, London SW7 5BD, UK
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Biogeographical and Diversification Analyses of Indian Pseudoscorpions Reveal the Western Ghats as Museums of Ancient Biodiversity. Mol Phylogenet Evol 2022; 175:107495. [DOI: 10.1016/j.ympev.2022.107495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/13/2022] [Accepted: 04/19/2022] [Indexed: 11/18/2022]
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