Tipe Echolokasi serta Struktur Larynx pada Miniopterus dan Rhinolophus
Abstrak: A bat is the only
mamal with true flight ability and have capability to perform echolocation.
Miniopterus and Rhinolopus are bat species that have some different
morphological characteristics but both of them commonly live in the cave. The
research were purposed to study the differences and connection of echolocation
call type and larynx’s structure of Miniopterus and Rhinolopus The two bat species were collected from 20th
and 23th cave of Japanese Cave Complex, Kaliurang, Sleman, Yogyakarta.
Specimens were taken to the laboratory for further analysis. Echolocation
signals of both bat species were recorded using ultrasonic microphone and were
analyzed with Batscan 9.0 software. Specimens were subjected for anatomical and
histological structure analysis of the larynx. Anatomical structure
observations were carried out with specimens dissection and they were fixed in
20% formol solution. Some samples of larynx of each species were processed and
stained with Alizarin Red’s-Alcian Blue staining for larynx’s bones
observation. Histological preparation of larynx was performed using paraffin
method and stained with Hematoxylin-Eosin and MAF. The results showed that
echolocation signals of Minipterus have
lower frequency (peak frequency between 44.1-51.6kHz) compared to that of
Rhinolopus (peak frequency between
54.4-64.1 kHz). However, Miniopterus has
better ability to modulate the signal frequency than Rhinolopus Both species are able to produce a
long-duration signal but Rhinolopus can
produce longer signal duration. These results can be related to the differences
of larynx’s anatomical and histological structure of both species which are
equally able to keep the intensity of echolocation signals but have different
work mechanisms.
Penulis: Abdul Rachman,
Johanes Sugiyanto, Luthfi Nurhidayat, Ardaning Nuriliani, Aswi A. Rofiqoh, Agus
Hermawan, Roesma Narulita
Kode Jurnal: jpbiologidd140928
