Bioacoustic Study of Insectivorous Bats
The microbat has developed advanced echolocating ability compared to the megabats or old-world fruit bats that relies mainly on vision and olfaction for food hunting. The microbats orient and capture their prey by means of echolocation that involves ultrasonic calls >20kHz, in which a frequen...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | en en |
| Published: |
UNIMAS Publisher, Universiti Malaysia Sarawak
2019
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| Subjects: | |
| Online Access: | http://ir.unimas.my/id/eprint/31477/1/Cover%20page%20july2019.pdf http://ir.unimas.my/id/eprint/31477/2/Bioacoustic%20Study%20of%20Insectivorous%20Bats.pdf http://ir.unimas.my/id/eprint/31477/ |
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| Summary: | The microbat has developed advanced echolocating ability compared to the megabats or old-world fruit
bats that relies mainly on vision and olfaction for food hunting. The microbats orient and capture their
prey by means of echolocation that involves ultrasonic calls >20kHz, in which a frequency beyond the
range of human hearing. Their morphological features and echolocation calls are designed in correlate with
their adaptability with the environment especially with their superiority maneuver, detection and localize
targeted object in cluttered environment. In Borneo, there are a total of 100 bats’ species with 85 species
from Sarawak (15 Megabats and 70 echolocating microbats). The use of ultrasonic detectors in monitoring
echolocation calls by using bat detectors has surged the researchers’ interest to study on bats and their
habitat relationship as well as addressing questions concerning their activity patterns despite the limitations
in this method. Present study intends to build a call library comprising of different species call frequencies
as well as bat activity patterns in Kubah National Park via acoustic measures. To date, higher elevations
recorded the highest activity that is determined by the number of passes but lower by species richness as
compared to the lower elevation. Acoustic monitoring provides additional data of bat species that occur at
each elevation that were not caught during trapping. These data will be highly useful in studying effect of
landscape changes in the future. |
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