Slowed motion analysis of stridulation in the grasshopper, Xanthippus corallipes (Acrididae: Oedipodinae)

Autor:	Barbara A. Frase, Robert B. Willey
Rok vydání:	1981
Předmět:	Courtship biology media_common.quotation_subject Linear series Animal Science and Zoology Stridulation Anatomy Xanthippus corallipes Grasshopper biology.organism_classification Ecology Evolution Behavior and Systematics Acrididae media_common
Zdroj:	Canadian Journal of Zoology. 59:1005-1013
ISSN:	1480-3283 0008-4301
DOI:	10.1139/z81-140
Popis:	Sounds were produced by male Xanthippus corallipes (Haldeman) during courtship by rubbing a ridge on the inside of the hind femur against a linear series of nodes on a raised forewing vein. The visual component included the motion of the hind femur exhibiting its bright coral-red medial surface and the red hind tibia as a semaphore. Analysis of ultra-high-speed motion films, video tapes with synchronized oscillotrace, sonagrams, and oscillograms showed that the two femora were consistently out of phase with one another during a single up–down motion of the chirp, the signal of one modulating that of the other. The resulting sound significantly differed from that produced by only one femur. A buzz produced only by vibration (almost 70 up–down motions per second) of a single femur. Different signals may be caused also by the use of different portions of the file having different nodal densities.Xanthippus corallipes is noted for the frequent occurrence of distinctive-appearing populations. Comparison of X. c. corallipes, the subspecies used here, with a published report on X. c. pantherinus (Scudder), revealed striking differences in the color of the femoral medial surface and in signalling sequences during courtship.
Databáze:	OpenAIRE
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