| 研究実績の概要 |
Field-testing of the Autobat acoustic lure to assess feasibility of obtaining comparative data on other species of vespertilionid bat:
1) In South East Queensland and Chichester State Forest in North East New South Wales, Australia with Dr Bradley Law (NSW Department of Primary Industries) we confirmed effectiveness of lure for attracting four additional vespertilionid species and obtained recordings of vocal communication calls of N. gouldi which will be used in future playback experiments.
2) In Bako National Park, Kuching, Sarawak, Malaysia we confirmed responsiveness of the lesser bamboo bat to the Autobat acoustic lure during a short field trip. 3) In collaborative fieldwork with Dr Shahrul Anuar and Dr Lee-Sim Lim of Universiti Sains Malaysia at Sungai Sedim Recreational Forest, Kulim, Malaysia we confirmed that various vespertilionid species responded. The latter represented the first records of these two species in the region.
Together with Drs Shahrul and Lim of Universiti Sains Malaysia I conducted the first experiments on responses of three species of horseshoe (rhinolophid) bats to Autobat simulations of conspecific echolocation calls while perch-feeding. The responses of bats were monitored using a thermal-imaging camera. The results of this pilot study were very encouraging. Perch-feeding bats tended to leave their perch and fly towards the speakers. Our work shows that this methodology could be used to investigate aspects of resource-defence in rhinolophid bats.
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