Author/Editor		Miklas, N; Čokl, A; Renou, M; Virant-Doberlet, M
Title		Variability of vibratory signals and mate choice selectivity in the southern green stink bug
Type		članek
Source		Behav Processes
Vol. and No.		Letnik 61
Publication year		2003
Volume		str. 131-42
Language		eng
Abstract		The southem green stink bug, Nezara viridula, has a complex mate recognition system that implicates chemical and acoustic eignals. To lacalise a sexual partner acoustically, a male and female altemate between the male courtship song (MCrS) and the female cal6ng song type 1 (FCSI). Although previous research has revealed that both signals show geographical variability, until now no studies have explored the form of this variability. We analysed the temporal and specVal characteristics of MCrS and FCSI pulse trains of males and females from a French and a Guadeloupe population. Pulse train duration of the MCrS varied within and between populations. Likewise, spectral and temporal parameters of FCS 1 varied within and between the two populations. Although females did not show any behavioural responses to pre-recorded MCrS, males responded to pro-recorded FCS 1 by emitting a bigher number of MCrS per minute. Furthermore, males modulated the repetition rate of their MCrS pulse trains to match those of the FCSI. All males responded to FCSI from French and Guadeloupe females despite the temporal differences in these songs; however, they responded with a shorter latency and a higher rate of MCrS/FCS 1 pulse trains to the songs of females from the'v own population. In choice experiments with two alternatives, responses to FCS I were inhibited when males received a simultaneous female call from another Pentatomidae sympatric species, Acro.sternum hilare. We conclude that, although males prefer FCSI from their own population, they recognise FCSI from French and Guadeloupe N. viridula females as species-specific female calls. Variability of vibratory signals might play a role in mate choice. © 2002 Elsevier Science B.V. All rights reserved.
Descriptors		BEHAVIOR, ANIMAL ANIMAL COMMUNICATION VIBRATION INSECTS