ISSN:
1570-7458
Keywords:
olfaction
;
plant odours
;
electroantennogram (EAG)
;
grasshoppers
;
Oedaleus decorus asiaticus
;
Angaracris barabensis
;
orthoptera
;
acrididae
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Electroantennogram (EAG) responses were recorded from two species of oedipodine grasshoppers, Oedaleus decorus asiaticus L. (graminivorous) and Angaracris barabensis Pall. (forbivorous), to volatiles emitted by chopped leaves of ten plant species. Male O. d. asiaticus showed much stronger EAG responses than conspecific females and both sexes of A. barabensis. Sexual differences in EAG responses correspond to different numbers of antennal sensilla of both sexes and to certain behavioural and morphological factors as well. The overall EAG response profiles of the two grasshopper species to the ten plant odours were similar. However, adaptation to host odour might have occurred because of differences in their feeding habits. Females of the graminivorous O. d. asiaticus possess a significantly higher olfactory sensitivity for poaceous plant species than A. barabensis, while the forbivorous A. barabensis showed significantly higher EAG responses to Allium senescens (Liliaceae), and a tendency of high responses to composite plant species in comparison with O. d. asiaticus.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1003911228168
Permalink
