Genome-wide data reveal cryptic diversity and genetic introgression in an Oriental cynopterine fruit bat radiation

BMC Evolutionary Biology
Balaji ChattopadhyayUma Ramakrishnan

Abstract

The Oriental fruit bat genus Cynopterus, with several geographically overlapping species, presents an interesting case study to evaluate the evolutionary significance of coexistence versus isolation. We examined the morphological and genetic variability of congeneric fruit bats Cynopterus sphinx and C. brachyotis using 405 samples from two natural contact zones and 17 allopatric locations in the Indian subcontinent; and investigated the population differentiation patterns, evolutionary history, and the possibility of cryptic diversity in this species pair. Analysis of microsatellites, cytochrome b gene sequences, and restriction digestion based genome-wide data revealed that C. sphinx and C. brachyotis do not hybridize in contact zones. However, cytochrome b gene sequences and genome-wide SNP data helped uncover a cryptic, hitherto unrecognized cynopterine lineage in northeastern India coexisting with C. sphinx. Further analyses of shared variation of SNPs using Patterson's D statistics suggest introgression between this lineage and C. sphinx. Multivariate analyses of morphology using genetically classified grouping confirmed substantial morphological overlap between C. sphinx and C. brachyotis, specifically in the high elevati...Continue Reading

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Citations

Feb 23, 2018·Ecology and Evolution·Stéphanie BourgeoisRoss McEwing
Aug 31, 2017·Scientific Reports·Meghana NateshUma Ramakrishnan
Jul 16, 2019·Mitochondrial DNA. Part B, Resources·Shantanu KunduKailash Chandra
Feb 21, 2021·Molecular Phylogenetics and Evolution·Nikolaos PsonisNikos Poulakakis
Jun 23, 2021·Journal of the Indian Institute of Science·Kritika M Garg, Balaji Chattopadhyay

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Datasets Mentioned

BETA
GU724956
AB046321
EF201643
AY629000
AY628945
AY628937
AY628938
AY628966
KJ417498-KJ417512

Methods Mentioned

BETA
biopsies
PCR
genotyping
PCA

Software Mentioned

CLUMMP
PLINK
FSTAT
STACKS
TANDEM
Figtree
FastQC
STRUCTURE
MEGA
MrBayes

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