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Immunochemical ablation of accessory reproductive glands of the male desert locust

Published online by Cambridge University Press:  19 September 2011

T. S. Dhadialla ,
Thomas R. Odhiambo  and
G. G. Wagner
T. S. Dhadialla
Affiliation:
The International Centre of Insect Physiology and Ecology (ICIPE), P.O. Box 30772, Nairobi, Kenya
Thomas R. Odhiambo
Affiliation:
The International Centre of Insect Physiology and Ecology (ICIPE), P.O. Box 30772, Nairobi, Kenya
G. G. Wagner
Affiliation:
The International Centre of Insect Physiology and Ecology (ICIPE), P.O. Box 30772, Nairobi, Kenya
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Abstract

Injection of antiserum prepared against accessory reproductive gland (ARG) secretions of the male desert locust, Schistocerca gregaria, disrupted the normal growth and function of the ARG complex in sexually maturing adults. Male locusts were injected with either antiserum or normal guinea-pig serum on days 3, 7 and 10 after adult ecdysis. When the injection of ARG antiserum began as early as day 3 of adult development a marked inhibition of ARG growth was accompanied by the suppression of other characteristics of sexual maturation (yellow body coloration and mating behaviour). Inhibition of ARG growth, while significant, was less pronounced when antiserum injections began on day 7 of adult development, and the injected males did not exhibit normal mating behaviour when placed with virgin females. When single antiserum injections were administered on day 10 of adult development, the males still attained their yellow body coloration by day 19 and copulated normally with virgin females, although their ARGs were only equivalent in size to those 13-day-old males.

Résumé

L'injection de l'antiserum préparé contre les sécretions de la glande reproductrice auxilliair (ARG) des locustes maies du desert, Schistocerca gregaria, interompt la eroissance normale et le fouctionnement du complexe ARG chezles adultes sexuellement matures. Les locustes mâles sont injectes auee aussi bien l'antiserum qu'avec le serum normal de cobaye aux jours 3, 7 et 10 aprés la transformation adulte. Quand l'injection de l'antiserum ARG commence tres tôt au jour 3 du developpment adulte, une inhibition, marquée de la croissance de l'ARG est accompagnée par la suppression des autres caracteristiques de la maturation sexuelle (une coloration jamme du corps, et un comportement sexuel). L'inhibition de la croissance de l'ARG quoique significative, est moius pronnoucée quand l'injection de l'antiserum de'bute au jour 7 du du developpment adulte et les maies injecte's néxhibeut pas de compartement sexuel normal quand ils sout placés en presence de females. Quand des injections uniques de l'antiserum sout adminstrées au jour 10 du developpment adulte, les maies gardent eucore leur coloration corporelle jaune jusqu'au jour 19. Et s'accouplent normalement avec les females vierges bien que leurs ARGs sont seulement equivalents en grandeur a' ceux des males ages de 13 jours.

Keywords

Immunochemical ablationaccessory reproductive glandsdesert locustAblation immunochimiqueglandes reproductriees auxilliariesdes locustes du desert
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 7 , Issue 4 , August 1986 , pp. 465 - 470
Copyright
Copyright © ICIPE 1986

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