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juvenile hormone iii

International Journal of Tropical Insect Science (1)

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The effects of precocenes in grasshoppers Heteracris littoralis (Orthoptera: Acrididae)
Hussain F. Alrubeai
Journal:

Insect Science and Its Application / Volume 7 / Issue 4 / August 1986

Published online by Cambridge University Press:

19 September 2011, pp. 529-531

Print publication:

August 1986
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Prococenes I or II (20–100 μg/insect) were topically applied to third instar nymphs of the grasshepper, Heteracris littoralis. Both compounds led to different degrees of precocious metamorphosis, irreversible with time, at the subsequent moults. Precocene-treated third instar nymphs gave rise to precocious adults at the following moult, though some of the nymphs responded and metamorphosed precociously in the fifth instar. Ovarian development was inhibited by precocene II. Meanwhile, juvenile hormone (20/μg/insect) restored normal ovarian development to some extent.