Bulletin biologique de la France et de la Belgique (1967) 101, 79-114

A. Girardie (1967)
Contrôle neuro-hormonal de la métamorphose et de la pigmentation chez Locusta migratoria cinerascens (Orthoptere)
Neurohormonal control of metamorphosis and pigmentation in L.m. cinerascens
Bulletin biologique de la France et de la Belgique 101, 79-114
Abstract: In the median neurosecretory cells of the pars intercerebralis of Locusta migratoria there are two zones, one central (AB) and another peripheral (C). It is possible to destroy one or the other by electrocoagulation (which-is more precise than cauterization) and so to determine their respective functions. Electrocoagulation of the AB zone had the same effect as implantation of corpora allata, i.e. it inhibited metamorphosis. Similar destruction of the C zone had the reverse effect, inducing the development of prothetelic adults. It is therefore concluded that these two neurosecretory centres together control the activities in respect of metamorphosis, the one centre being inhibitory and the other stimulative. It was further tentatively concluded that the C cells are concerned, independently of the corpora allata, with the production of a colour-darkening factor. This paper completes work recorded in a series of papers from 1962 to 1966.
(The abstract is excluded from the Creative Commons licence and has been copied from Acridological Abstracts with permission by NRI, Univ. of Greenwich at Medway.)
(original language: French)

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Locusta migratoria