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      https://www.ias.ac.in/article/fulltext/jgen/100/0084

    • Keywords

       

      microbiome; Kaziranga; vulnerable species and herbivore; Rhinoceros unicornis.

    • Abstract

       

      Rhinoceros unicornis, also known as the greater one-horned rhinoceros (GoHR), is a vulnerable wildlife species found in the Indian subcontinent with an estimated global population of 3582, of which an estimated 2995 resides in India. The Kaziranga National Park of Assam is the home to ~80.56% of the GoH population in India. Recent advances in genetics and microbial studies underscored theimportance of gut microbial symbiosis as a crucial factor for host metabolic health and environmental interaction, particularly for higher mammals. Alteration of the normal microbiome can also be an indicator of chronic disease and infection. Freshly voided dung samples from nine dung heaps of free ranging or wild GoH rhinoceros were collected from Kaziranga National Park for mapping the gut microbial architecture through 16S-metagenomic approach. In our sample, the GoH gut harbours 168.8±12.55 (SE) bacteria-specific OTUsbelonging to 21 phyla of which the gram-negative Proteobacteria is the most abundant phyla. Other abundant phylas found in the GoH gut are Firmicutes and Bacteroidetes. Although the GoH rhinoceros gut can utilize fibrous plant by microbial fermentation, the aerobic, nonfermenting Acinetobacter (20.7%), Stenotrophomonas (17.8%) and Brevundimonas (9.1%) constitute about 50% of all identified genus. Functional prediction of the GoH microbiome reveals that >50% of the bacteria present are involved in metabolism followed by cellularprocesses and information processing. A significant proportion (>1%) are associated with different diseases. In summary, our study characterized bacterial communities of nine wild GoH to identify some unique features and its implication in disease and survival of GoH.

    • Author Affiliations

       

      PARIKSHIT KAKATI1 SUMAN KALYAN PAINE2 CHANDRA KANTA BHATTACHARJEE3 CHANDRIKA BHATTACHARYYA2 AMIT SHARMA1 DEBABRATA PHUKAN4 NAGENDRA NATH BARMAN5 ANALABHA BASU2

      1. WWF-India, A-16/103, Game Village, Basistha, Brahmaputra Landscape, Wildlife and Habitat Division, Guwahati, India
      2. National Institute of BioMedical Genomics, Kalyani 741 251, India
      3. ICMR-Regional Medical Research Centre, NE Region, Dibrugarh 786 010, India
      4. Kaziranga National Park, Assam Forest Department, Govt. of Assam, Bokakhat, India
      5. College of Veterinary Science, AAU, Khanapara, Guwahati 781 022, India
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    • Supplementary Material

       
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