Journalartikel

Jahr der Veröffentlichung: 2013

Seiten: 200-213

Zeitschrift: Journal of Evolutionary Biology

Bandnummer: 27

Heftnummer: 1

Open Access Status: Bronze

DOI Link: https://doi.org/10.1111/jeb.12294

Verlag: Oxford University Press

Abstract: 

In Tettigoniidae (Orthoptera: Ensifera), hearing organs are essential in
mate detection. Male tettigoniids usually produce calling songs by
tegminal stridulation, whereas females approach the males
phonotactically. This unidirectional communication system is the most
common one among tettigoniids. In several tettigoniid lineages, females
have evolved acoustic replies to the male calling song which constitutes
a bidirectional communication system. The genus Poecilimon
(Tettigoniidae: Phaneropterinae) is of special interest because the
ancestral state of bidirectional communication, with calling males and
responding females, has been reversed repeatedly to unidirectional
communication. Acoustic communication is mediated by hearing organs that
are adapted to the conspecific signals. Therefore, we analyse the
auditory system in the Tettigoniidae genus Poecilimon for
functional adaptations in three characteristics: (i) dimension of
sound‐receiving structures (tympanum and acoustic spiracle), (ii) number
of auditory sensilla and (iii) hearing sensitivity. Profound
differences in the auditory system correlate with uni‐ or bidirectional
communication. Among the sound‐receiving structures, the tympana scale
with body size, whereas the acoustic spiracle, the major sound input
structure, was drastically reduced in unidirectional communicating
species. In the unidirectional P. ampliatus group, auditory sensilla are severely reduced in numbers, but not in the unidirectional P. propinquus group. Within the P. ampliatus group, the number of auditory sensilla is further reduced in P. intermedius
which lost acoustic signalling due to parthenogenesis. The auditory
sensitivity correlated with the size of the acoustic spiracle, as
hearing sensitivity was better with larger spiracles, especially in the
ultrasonic range. Our results show a significant reduction in auditory
structures, shaped by the differing sex roles during mate detection.

Harvard-Zitierstil: Strauß, J., Lehmann, A. and Lehmann, G. (2013) Sensory evolution of hearing in tettigoniids with differing communication systems, Journal of Evolutionary Biology, 27(1), pp. 200-213. https://doi.org/10.1111/jeb.12294

APA-Zitierstil: Strauß, J., Lehmann, A., & Lehmann, G. (2013). Sensory evolution of hearing in tettigoniids with differing communication systems. Journal of Evolutionary Biology. 27(1), 200-213. https://doi.org/10.1111/jeb.12294