Document Detail

Limited condition dependence of male acoustic signals in the grasshopper Chorthippus biguttulus.
MedLine Citation:
PMID:  22957192     Owner:  NLM     Status:  PubMed-not-MEDLINE    
In many animal species, male acoustic signals serve to attract a mate and therefore often play a major role for male mating success. Male body condition is likely to be correlated with male acoustic signal traits, which signal male quality and provide choosy females indirect benefits. Environmental factors such as food quantity or quality can influence male body condition and therefore possibly lead to condition-dependent changes in the attractiveness of acoustic signals. Here, we test whether stressing food plants influences acoustic signal traits of males via condition-dependent expression of these traits. We examined four male song characteristics, which are vital for mate choice in females of the grasshopper Chorthippus biguttulus. Only one of the examined acoustic traits, loudness, was significantly altered by changing body condition because of drought- and moisture-related stress of food plants. No condition dependence could be observed for syllable to pause ratio, gap duration within syllables, and onset accentuation. We suggest that food plant stress and therefore food plant quality led to shifts in loudness of male grasshopper songs via body condition changes. The other three examined acoustic traits of males do not reflect male body condition induced by food plant quality.
Alexandra Franzke; Klaus Reinhold
Publication Detail:
Type:  Journal Article     Date:  2012-07-11
Journal Detail:
Title:  Ecology and evolution     Volume:  2     ISSN:  2045-7758     ISO Abbreviation:  Ecol Evol     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-09-07     Completed Date:  2012-09-10     Revised Date:  2013-05-30    
Medline Journal Info:
Nlm Unique ID:  101566408     Medline TA:  Ecol Evol     Country:  England    
Other Details:
Languages:  eng     Pagination:  1914-21     Citation Subset:  -    
Department of Evolutionary Biology, Bielefeld University Morgenbreede 45, 33615, Bielefeld, Germany.
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