Acoustic divergence in two cryptic Hipposideros species: A role for social selection?

T. Kingston, M. C. Lara, G. Jones, Zubaid Akbar Mukhtar Ahmad, T. H. Kunz, C. J. Schneider

Research output: Contribution to journalArticle

110 Citations (Scopus)

Abstract

We present evidence that a relatively widespread and common bat from South East Asia comprises two morphologically cryptic but acoustically divergent species. A population of the bicoloured leaf-nosed bat (Hipposideros bicolor) from Peninsular Malaysia exhibits a bimodal distribution of echolocation call frequencies, with peaks in the frequency of maximum energy at ca. 131 and 142 kHz. The two phonic types are genetically distinct, with a cytochrome b sequence divergence of just under 7%. We consider the mechanisms by which acoustic divergence in these species might arise. Differences in call frequency are not likely to effect resource partitioning by detectable prey size or functional range. However, ecological segregation may be achieved by differences in microhabitat use; the 131 kHz H. bicolor is characterized by significantly longer forearms, lower wing loading, a lower aspect ratio and a more rounded wingtip, features that are associated with greater manoeuvrability in flight that may enable it to forage in more cluttered environments relative to the 142 kHz phonic type. We suggest that acoustic divergence in these species is a consequence of social selection for a clear communication channel, which is mediated by the close link between the acoustic signal and receptor systems imposed by the highly specialized nature of the hipposiderid and rhinolophid echolocation system.

Original languageEnglish
Pages (from-to)1381-1386
Number of pages6
JournalProceedings of the Royal Society B: Biological Sciences
Volume268
Issue number1474
DOIs
Publication statusPublished - 2001
Externally publishedYes

Fingerprint

Echolocation
Acoustics
echolocation
acoustics
divergence
bat
Chiroptera
maneuverability
Cytochromes b
Maneuverability
Far East
prey size
niche partitioning
Malaysia
South East Asia
cytochrome b
Forearm
microhabitat
animal communication
microhabitats

Keywords

  • Acoustic resource partitioning
  • Echolocation
  • Speciation
  • Wing morphology

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Agricultural and Biological Sciences (miscellaneous)

Cite this

Kingston, T., Lara, M. C., Jones, G., Mukhtar Ahmad, Z. A., Kunz, T. H., & Schneider, C. J. (2001). Acoustic divergence in two cryptic Hipposideros species: A role for social selection? Proceedings of the Royal Society B: Biological Sciences, 268(1474), 1381-1386. https://doi.org/10.1098/rspb.2001.1630

Acoustic divergence in two cryptic Hipposideros species : A role for social selection? / Kingston, T.; Lara, M. C.; Jones, G.; Mukhtar Ahmad, Zubaid Akbar; Kunz, T. H.; Schneider, C. J.

In: Proceedings of the Royal Society B: Biological Sciences, Vol. 268, No. 1474, 2001, p. 1381-1386.

Research output: Contribution to journalArticle

Kingston, T, Lara, MC, Jones, G, Mukhtar Ahmad, ZA, Kunz, TH & Schneider, CJ 2001, 'Acoustic divergence in two cryptic Hipposideros species: A role for social selection?', Proceedings of the Royal Society B: Biological Sciences, vol. 268, no. 1474, pp. 1381-1386. https://doi.org/10.1098/rspb.2001.1630
Kingston, T. ; Lara, M. C. ; Jones, G. ; Mukhtar Ahmad, Zubaid Akbar ; Kunz, T. H. ; Schneider, C. J. / Acoustic divergence in two cryptic Hipposideros species : A role for social selection?. In: Proceedings of the Royal Society B: Biological Sciences. 2001 ; Vol. 268, No. 1474. pp. 1381-1386.
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