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Dr. Chetan Nag K S

nag chetan

Deputy Director & Associate Professor, CUBEC Jain (Deemed-to-be University) Bengaluru, Karnataka, India.

I am broadly interested in biodiversity, conservation, & terrestrial Ecology with an emphasis on Urban biodiversity & Ecology. My interests are in addressing “basic” questions in Biodiversity & Ecology under a terrestrial setting. Specifically, I am interested in studying the patterns and processes underlying the functioning of a terrestrial ecosystem through field observations, and field- and lab experiments within a fundamental (evolutionary/ecological) and applied (conservation-oriented) framework.

Research Interests:

I am currently focusing on:

  1. Primate Hybridization studies between Hanuman langur (Semnopithecus entellus) and Nilgiri langur (Semnopithecus johnii) of South Western Ghats using a molecular genetic approach

  2. Urban Ecological studies to understand processes that drive biological diversification as a result of human influence. Specifically, I am interested in themes such as Urban species traits and evolution; urban habitats and urban biotic communities to understand

    • Urbanization as a selective force changing the composition of animal communities
    • Animal species responses & adaptations to challenging situations in urban and suburban environments through an integrated approach under the climate change scenario. I am particularly interested in understanding the genomic basis of adaptation to climate change (genetic responses of individuals/populations to climate change).

To this end, I have chosen amphibians, birds & mammals to answer my questions in an evolutionary ecology framework but I am flexible as long as the research question demands me to move to any animal model systems and tools.

Besides research, I am deeply committed to science-based teaching, both at Bachelor’s and Master’s levels. Other than my time in History & Philosophy of Science, Science outreach lectures, I follow the literature on Indian tradition & Culture under a Comparative Science of Cultures framework, do a lot traveling, and enjoy Hindustani classical music.

Education and Employment:

  • B.Sc (2003): MES College, Bangalore University, Bangalore, India
  • M.Sc (Zoology, 2005): Dept. of Zoology, Bangalore University, Bangalore, India
  • M.Phil (Zoology, 2007): Periyar University, Salem, Tamil Nadu, India
  • Ph.D (Zoology, 2012): SACON- Bharathiar University, Coimbatore, Tamil Nadu, India
  • Postdoctoral scholar (2011-2012): CES, Indian Institute of Science, Bangalore, India
  • Instructor (Biology, 2012-2017)- Undergraduate Program, Indian Institute of Science, Bangalore, India

    •  

    Collaborators:

    1. Prof K Praveen Karanth, Professor, Centre for Ecological Sciences, Indian Institute of Science, Bangalore, Karnataka, India (https://praveenkaranth.weebly.com/)

    2. Dr. K P Dinesh, Scientist D, Zoological Survey of India, Western Regional Center, Pune, Maharashtra, India (https://www.researchgate.net/profile/Dinesh-Kp)

    3. Dr. H.N. Kumara, Principal Scientist, Sálim Ali Centre for Ornithology and Natural History, Anaikatty, Coimbatore-641108, Tamil Nadu, India (https://www.sacon.in/people/faculty/principal-scientist/?uid=dr-h-n-kumara)

    4. Mr. Rajesh Puttaswamaiah, Citizen Scientist & Trustee, Bat Conservation India Trust, Kadabagere, Magadi Road, Bengaluru, Karnataka-562130 (http://batconservationindia.org)

    5. Dr. Aravind N A, Sr. Fellow & Convenor, S M Sehgal Foundation Centre for Biodiversity and Conservation, Ashoka Trust for Research in Ecology and the Environment (ATREE) ( https://www.atree.org/profile/aravind-madhyastha/ )

    6. Dr. Anubhab Khan, Assistant Professor, Centre for Ecological Sciences, Indian Institute of Science, Bangalore, Karnataka, India.
      (https://poodl-ces.github.io/index.html )

Publications

2025

Ojha, S., Chatterjee, A., Mahato, S., Nag K S C., Kumara, H N., Singh, M. 2025. Life in transit: Habitat use, behavioural profile and feeding ecology by Nilgiri langur (Semnopithecus johnii) in a fragmented evergreen habitat of the Anamalai Tiger Reserve, Western Ghats, India. Current Science ( Accepted).

Meganath ,KV. , Asaf, M., Abraham, M., Bindiya, L S., Nag K S C., Sebastian, N. K., Chandy, R., Meethal, M. E. G., & Anand, L. F. (2025). Mitochondrial cytochrome B gene based phylogenetic analysis of Nilgiri langur (Semnopithecus johnii) sampled from Periyar Tiger reserve, Kerala. International Journal of Zoology and Applied Biosciences, 10(1), 10–14. https://doi.org/10.55126/ijzab.2025.v10.i01.002

2024

Mahato, S., Suraj, N., Nag, K S C., Muhashin Asaf, V. N., Deena, P. N., Kumara, H. N., & Singh, M. (2024). Where do the langurs criss-cross? Spatial understanding of group composition and habitat of mixed-species groups of Nilgiri langur (Semnopithecus johnii) and tufted grey langur (Semnopithecus priam) across the Western Ghats, India. Mammalia

Harshakumar, C., R. Puttaswamaiah & Nag, K.S.C. (2024). First sighting record of a Ruddy Mongoose Urva smithii Gray, 1837 feeding on a pipistrelle bat in Nagarahole Tiger Reserve, India. Journal of Threatened Taxa 16(10): 26027–26029. https://doi.org/10.11609/jott.9347.16.10.26027-26029

Deepak, P., Dinesh, K. P., Ashadevi, J. S., & Nag, K. S. C. (2024). Amphibians of agro-climatic zones of Karnataka with an updated checklist for the state. Records of the Zoological Survey of India, 123(4), 361–375. https://doi.org/10.26515/rzsi/v123/i4/2023/169220

Shalini, T., Amith, S. J. and Nag, K. S. C. (2024). A review of Szulkin, M., J. Munshi-South, and A. Charmantier, eds. 2020. Urban Evolutionary Biology. Oxford University Press, Oxford, 303 pp. ISBN 978-0-19-883685-8. Journal of Animal Diversity, 6 (1): 21–22. http://dx.doi.org/10.22034/JAD.2024.6.1.3

Deepak, P., Dinesh, K.P., Nag, K.S.C., Ohler, A., Shanker, K., D Souza, P., Asha Devi, J.S. (2024). Revisionary studies on the genus Sphaerotheca Günther, 1859 (Anura: Dicroglossidae) and description of a new species from the metropolitan suburban area of city Bengaluru, India. Zootaxa 5405 (3): 381–410

Kumara, H. N., Sasi, R., Mahato, S., Kumar, S., Nag, K S C., Suganthasakthivel, R., Ramesh Kumar, P., Umapathy, G., Singh, M., & Singh, M. (2024). Distribution, social organization, and management of Semnopithecus johnii: An umbrella species of fragmented landscape of the Western Ghats. Biotropica, 00, 1–17. https://doi.org/10.1111/ btp.13287

2023

Kumari K S., Puttaswamaiah R., Nag K S C. 2023. Preliminary analysis indicates dietary similarities in the prey composition of Hipposideros hypophyllus Kock and Bhat, 1994 (Chiroptera: Hipposideridae) and sympatric congeneric species. Journal of Animal Diversity. 5 (4). URL: http://jad.lu.ac.ir/article-1-317-en.html

Bramhi, S C., & Nag, K.S.C. 2023. Identifying the Linnean Shortfalls and the Prominence of DNA Barcodes in Urban Areas: Reviews and Reflections from Indian Cities. In Justin A. Daniels (Ed.), Advances in Environmental Research. Vol 95: 181-198 pp. Nova Science publishers, Inc, USA.

Nag, K.S.C., Deepak, P. and Hegde, A. (2023) A Rapid Survey of the Anuran Diversity at Nandi Hills and Moodiganahalli village, Chikkaballapur District, Karnataka, India. Hamadryad: 40, 29–36

2022

Nag, K. S. C. (2022). Height variations of Large Cormorant Phalacrocorax carbo sinensis nests in response to anthropogenic presence at two lakes in Bengaluru. Indian BIRDS 18 (3): 74–78.

2020

Nag, K.S.C. (2020). A new report on mixed species association between Nilgiri Langurs Semnopithecus johnii and Tufted Grey Langurs S. priam (Primates: Cercopithecidae) in the Nilgiri Biosphere Reserve, Western Ghats, India. Journal of Threatened Taxa 12(9): 15975-15984. https://doi.org/10.11609/jott.5615.12.9.15975–15984

Others

Nag, K.S.C. (2020). A review of- Darwin Comes to Town: How the Urban Jungle Drives Evolution. Menno Schilthuizen. Quercus Editions Ltd (2018). Current Science, 118 (11), 1843-1844. 10th June. https://www.currentscience.ac.in/Volumes/118/11/1847.pdf

Singh, M., Kumara, H.N., Dittus, W., Kumar, A. & Nag, K.S.C. 2020. Semnopithecus priam. The IUCN Red List of Threatened Species 2020: e.T167546892A17942964. https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T167546892A17942964.en

Singh, M., Kumara, H.N., Kumar, A. & Nag, K.S.C. 2020. Semnopithecus hypoleucos. The IUCN

Red List of Threatened Species 2020: e.T167543916A17942313. https://dx.doi.org/10.2305/IUCN.UK.2020-2.RLTS.T167543916A17942313.en

 

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