Abstract
The Indian antelope or blackbuck (Antilope cervicapra) is endemic to the Indian subcontinent, inhabiting scrublands and dry grasslands. Most of the blackbuck populations are small, isolated, and threatened by habitat fragmentation and degradation. Management of such disjunct populations requires genetic characterization, which is critical for assessing hazards of stochastic events and inbreeding. Addressing the scarcity of such information on the blackbuck, we describe a novel panel of microsatellite markers that could be used to monitor blackbuck demography and population genetic parameters using non-invasive faecal sampling. We screened microsatellites (n = 40) that had been reported to amplify in bovid and cervid species using faecal samples of the blackbuck collected from Kaimoor Wildlife Sanctuary, Uttar Pradesh, India and its vicinities. We selected 12 markers for amplification using faecal DNA extracts (n = 140) in three multiplex reactions. We observed a mean amplification success rate of 72.4% across loci (92.1–25.7%) with high allele diversity (mean number of alleles/locus = 8.67 ± 1.03). Mean genotyping error rates across the markers were low to moderate (allelic drop-out rate = 0.09; false allele rate = 0.11). The proportions of first- and second-order relatives in the study population were 0.69% and 6.21%, respectively. Based on amplification success, genotyping error rates and the probability of identity (PID), we suggest (i) a panel of five microsatellite markers (cumulative PID = 1.24 × 10–5) for individual identification and population monitoring and (ii) seven additional markers for conservation genetics studies. This study provides essential tools capable of augmenting blackbuck conservation strategies at the landscape level, integral to protecting the scrubland-grassland ecosystem.
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Data availability
Raw genotypes used in this study will be made available upon reasonable request. All other data have been included in the form of tables in the manuscript and supplementary materials.
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Acknowledgements
The authors thank the Director, the Dean, Faculty of Wildlife Science, the Research Coordinator and the Nodal Officer, Wildlife Forensic and Conservation Genetics Cell, Wildlife Institute of India, Dehradun, Uttarakhand, India, for facilitating the study. We appreciate Mr. A. Madhanraj for logistic support. We also thank the Uttar Pradesh State Forest Department for providing permission for the fieldwork. The study was financed by M/s Welspun Energy UP Pvt Ltd.
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The financial support for this study was granted by M/s Welspun Energy UP Pvt Ltd. The funding agency had no role in the design or execution of the experiments.
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Concept: SPG, BH, RD; Fieldwork: RD, KA, KAK, HK; Sample processing: RD, VK, KA, KAK, HK, NK; Performed the experiments: RD, VK, NK; Analysed the data: RD, SPG, BH; Authored the original manuscript: RD; Reviewed and commented on the draft manuscript: SPG, BH; approved the initial and revised drafts: RD, VK, KA, KAK, HK, NK, SPG, BH.
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This study did not involve handling of animals. We did not use any tissue samples. We received permission to collect non-invasive faecal samples from Uttar Pradesh State Forest Department vide letter no. 456 dated 20th August 2018.
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De, R., Kumar, V., Ankit, K. et al. Cross-amplification of ungulate microsatellite markers in the endemic Indian antelope or blackbuck (Antilope cervicapra) for population monitoring and conservation genetics studies in south Asia. Mol Biol Rep 48, 5151–5160 (2021). https://doi.org/10.1007/s11033-021-06514-7
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DOI: https://doi.org/10.1007/s11033-021-06514-7