Morphological and physiological differences of the auditory system in three related bushcrickets (Orthoptera: Phaneropteridae, Poecilimon)
作者:
ANDREAS STUMPNER,
KLAUS‐GERHARD HELLER,
期刊:
Physiological Entomology
(WILEY Available online 1992)
卷期:
Volume 17,
issue 1
页码: 73-80
ISSN:0307-6962
年代: 1992
DOI:10.1111/j.1365-3032.1992.tb00992.x
出版商: Blackwell Publishing Ltd
关键词: Bioacoustics;bushcrickets;auditory organs;tympanic nerve;auditory sensivity;sound pressure receiver;Tettigonioidea;Poecilimon
数据来源: WILEY
摘要:
Abstract.The auditory system of three closely related bushcrickets was investigated with respect to morphological and physiological differences. The size of the acoustic vesicle in the prothorax cavity and the size of the acoustic spiracle were compared to differences in auditory tuning of the tympanic nerve and differences in the directionality. The results indicate that a small auditory vesicle and auditory spiracle provide reduced sensitivity in the high frequency range (above 10—15 kHz), but increase sensitivity at low frequencies (below 10 kHz). The directionality of the hearing system deteriorates at frequencies between 10 and 25 kHz in species with a small spiracle and trachea. The evolutionary implications of these differences of the auditory systems are discussed. They are considered to be influenced more by ecological factors than bioacoustical one
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