Morpho-Functional Characterizationof Cercal Organs in Crickets

The involvement of the cercal organs in triggering of motor responses to acoustic stimulation was comparatively investigated in a cricket Phaeophelacris bredoides imago, which lost the tympanal organ during evolution, and a cricket Gryllus bimaculatus last-instar nymph that has a rudimentary tympana...

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Bibliographic Details
Published in:Journal of evolutionary biochemistry and physiology 2021-01, Vol.57 (1), p.46-54
Main Authors: Lunichkin, A M, Zhukovskaya, M I
Format: Article
Language:English
Subjects:
Cerci
Morphometry
Sensilla
Online Access:Get full text
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Summary:The involvement of the cercal organs in triggering of motor responses to acoustic stimulation was comparatively investigated in a cricket Phaeophelacris bredoides imago, which lost the tympanal organ during evolution, and a cricket Gryllus bimaculatus last-instar nymph that has a rudimentary tympanal organ. A morphometric analysis of the cercal filiform sensilla in both species revealed that in Ph. bredoides a single cercus bears mainly longer hairs (total number, 1110 ± 16) that vary in their length from 800 to 1850 µm, while in G. bimaculatus nymphs the filiform sensilla on a single cercus are fewer (total number, 845 ± 27) and predominantly shorter (
ISSN:0022-0930
1608-3202
DOI:10.1134/S002209302101004X