Hormonal control of phase-related changes in the number of antennal sensilla in the desert locust, Schistocerca gregaria: possible involvement of [His7]-corazonin

Journal of Insect Physiology
Koutaro Maeno, Seiji Tanaka

Abstract

The effect of [His(7)]-corazonin on the abundance of antennal sensilla in the desert locust, Schistocerca gregaria, was investigated to test the hypothesis that injection of this neuropeptide would mimic a crowding effect. Solitarious locusts (reared in isolation) were injected with [His(7)]-corazonin at the 3rd nymphal instar and the numbers of sensilla on the 2nd, 8th and 14th antennal segments in the adult stage were compared with those for oil-injected solitarious controls or un-injected gregarious locusts (reared in group). The numbers of sensilla on these antennal segments were all reduced significantly after [His(7)]-corazonin injection compared with those for oil-injected controls, but similar to the values for gregarious individuals. Among the four major types of olfactory sensilla, coeloconic, trichoid, basiconic type A and basiconic type B, [His(7)]-corazonin injection influenced the abundance of all but the last type. The effect of [His(7)]-corazonin injection varied with the time of injection; the earlier the injection the larger the effects on the abundance of total antennal sensilla on the 8th segment, although the way in which the injection affected the abundance varied with the sensillum type. A hypothesis expl...Continue Reading

References

Jun 9, 1999·Proceedings of the National Academy of Sciences of the United States of America·A I TawfikM P Pener
May 20, 2000·Journal of Insect Physiology·S Tanaka
Mar 29, 2001·Proceedings of the National Academy of Sciences of the United States of America·S J SimpsonT Dodgson
Jun 22, 2001·Archives of Insect Biochemistry and Physiology·S Tanaka
May 29, 2003·Journal of Insect Physiology·M P. Pener, Yoram Yerushalmi
Feb 17, 1951·Nature·V M DIRSH

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Citations

Jul 28, 2009·Journal of Insect Physiology·Koutaro Maeno, Seiji Tanaka
Dec 17, 2008·General and Comparative Endocrinology·Heleen VerlindenJozef Vanden Broeck
Jan 9, 2015·The Journal of Experimental Biology·Ulrich R ErnstLiliane Schoofs

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