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Raghuram, H.
- Species and Acoustic Diversity of Bats in a Palaeotropical Wet Evergreen forest in Southern India
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Authors
Affiliations
1 Centre for Ecological Sciences, Indian Institute of Science, Bangalore 560 012, IN
1 Centre for Ecological Sciences, Indian Institute of Science, Bangalore 560 012, IN
Source
Current Science, Vol 107, No 4 (2014), Pagination: 631-641Abstract
The Western Ghats of India is among the top 25 biodiversity hotspots in the world. About 43% of the reported 117 bat species in India are found in this region, but few quantitative studies of bat echolocation calls and diversity have been carried out here thus far. A quantitative study of bat diversity was therefore conducted using standard techniques, including mist-netting, acoustical and roost surveys in the wet evergreen forests of Kudremukh National Park in the Western Ghats of Karnataka. A total of 106 bats were caught over 108 sampling nights, representing 17 species, 3 belonging to Megachiroptera and 14 to Microchiroptera. Acoustical and roost surveys added three more species, two from Microchiroptera and one from Megachiroptera. Of these 20 species, 4 belonged to the family Pteropodidae, 10 to Vespertilionidae, 3 to Rhinolophidae, 2 to Megadermatidae and 1 to Hipposideridae. We recorded the echolocation calls of 13 of the 16 microchiropteran species, of which the calls of 4 species (Pipistrellus coromandra, Pipistrellus affinis, Pipistrellus ceylonicus and Harpiocephalus harpia) have been recorded for the first time. Discriminant function analyses of the calls of 11 species provided 91.7% correct classification of individuals to their respective species, indicating that the echolocation calls could be used successfully for non-invasive acoustic surveys and monitoring of bat species in the future.Keywords
Bats, Echolocation, Species Diversity, Wet Evergreen forest.Full Text
- Responses of Short-Nosed Fruit Bat, Cynopterus sphinx (Vahl 1797) Towards Distress Calls of their Conspecifics from Related and Unrelated Sites:Implications for Building a Social Relationship
Abstract Views :189 |
PDF Views:69
Authors
Affiliations
1 Department of Zoology, The American College, Madurai 625 002, IN
2 Department of Animal Sciences, School of Life Sciences, Bharathidasan University, Tiruchirappalli 620 024, IN
1 Department of Zoology, The American College, Madurai 625 002, IN
2 Department of Animal Sciences, School of Life Sciences, Bharathidasan University, Tiruchirappalli 620 024, IN
Source
Current Science, Vol 115, No 11 (2018), Pagination: 2150-2155Abstract
Distress calls emitted by bats signal their conspecifics either to warn them or inform them about the situations. Conspecifics may also get attracted towards distress calls as a behaviour of cooperative mobbing or just selfishly assessing the potential source of danger. The exact functions of distress calls in bats therefore vary to a great degree and are very hard to pinpoint. We conducted playback experiments to test the response of short-nosed fruit bat, Cynopterus sphinx towards the distress calls of their conspecifics from related and unrelated sites. Bats were attracted to their conspecifics from both related and unrelated sites and in one occasion towards fruit bat (Rousettus leschenaulti) of another genus within the same family. The response towards the opposite sex was significant in most of the playback trials and the reasons remain unclear. This symmetric response towards conspecifics from related and unrelated sites suggests the possibility of fruit bats building social relationships among unrelated individuals and probably between species.Keywords
Chiroptera, Cynopterus sphinx, Conspecifics, Distress Calls, Social Relationship.Full Text
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