Volume 5, Issue 4 (In Press 2023)                   JAD 2023, 5(4): 0-0 | Back to browse issues page

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Kumari Krishnanagara S, Puttaswamaiah R, Nag Krishnaswamy Sudarshan C. Preliminary analysis indicates dietary similarities in the prey composition of Hipposideros hypophyllus Kock and Bhat, 1994 (Chiroptera: Hipposideridae) and sympatric congeneric species . JAD 2023; 5 (4)
URL: http://jad.lu.ac.ir/article-1-317-en.html
1- Centre for Urban Ecology, Bio-Diversity, Evolution and Climate Change (CUBEC), JAIN (Deemed-to-be UNIVERSITY), ​#319, 17th Cross, 25th Main, J P Nagar 6th Phase, Bengaluru Karnataka, 560078 India , k.shraddha@jainuniversity.ac.in
2- Bat Conservation India Trust (BCIT), #285, 10th Cross, Rashi Residency Layout, Kadabagere, Magadi Road, Bengaluru, Karnataka-562130, India
3- Centre for Urban Ecology, Bio-Diversity, Evolution and Climate Change (CUBEC), JAIN (Deemed-to-be UNIVERSITY), ​#319, 17th Cross, 25th Main, J P Nagar 6th Phase, Bengaluru Karnataka, 560078 India
Abstract:   (397 Views)

Much is known about bats from other parts of the globe regarding factors such as homogeneity and heterogeneity of habitats, prey abundance influencing the predator-prey relationship, etc. Sadly, minuscule literature on bat ecology is available for India. The current study investigated diet of the Kolar leaf-nosed bat Hipposideros hypophyllus, a Critically Endangered (CR) insectivorous bat in IUCN Red List of Threatened Species, known only from a single cave where it shares its roosting site with congeneric species, namely Durgadas’s leaf-nosed bat H. durgadasi Khajuria and Schneider’s leaf-nosed bat H. speoris (Schneider), which are Vulnerable (VU) and Least Concerned (LC), respectively. Because Hipposideros hypophyllus is on the brink of extinction with no baseline ecological data available, the study analyzed the dietary compositions of the species. It relied on the morphological cataloguing of post-digested prey fragments in fecal pellets of the species and its congeners. Fresh fecal pellets of all three species of Hipposideros were analysed to understand morphological differences and prey composition at the only known site for H. hypophyllus, Hanumanahalli village, Kolar district, India, between November 2022 to February 2023. A total of 29,793 prey remnants were examined from all three species belonging to 11 insect orders (Blattidae, Coleoptera, Dictyoptera, Diptera, Hemiptera, Hymenoptera, Lepidoptera, Neuroptera, Odonata, Orthoptera, Thysanoptera). All three species of Hipposideros fed mainly on Coleoptera, followed by Diptera and Lepidoptera, showing a strong overlap in their prey composition. Our results suggest a long-term study across seasons and prey identification to species level which can provide a more detailed picture of the prey compositions leading to the conservation of Hipposideros hypophyllus, H. durgadasi, and H. speoris.

     
Type of Study: Original Research Article | Subject: Ecological Diversity
Received: 2023/08/15 | Accepted: 2023/11/20 | Published: 2024/04/17

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