Japanese Journal of Applied Entomology and Zoology (2000) 44, 81-88

Masahiro Nomura and Tadashi Miyata (2000)
[Effects of pyriproxyfen, insect growth regulator on reproduction of common cutworm, Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae)]
Japanese Journal of Applied Entomology and Zoology 44 (2), 81-88
Abstract: The effects of pyriproxyfen, a juvenile hormone mimic on the reproduction of the common cutworn, Spodoptera litura (Fabricius) were examined. Topical application of 0.1 ng of pyriproxyfen to day^-1 female pupae and 0.125 μg to day-0 6th stadium larvae reduced the total number of eggs oviposited and hatchability of oviposited eggs. The female adults to which 0.4 μg pyriproxyfen was applied at the day-0 6th stadium did not show any abnormalities in morphological characteristics, adult life span and mating ability with untreated males. However, the total number of eggs oviposited and hatchability of oviposited eggs were lower in treated females than untreated ones. Female adults treated with 0.3 ng of pyriproxyfen at the day^-1 pupal stage showed wing abnormalities. Ovarian development was also inhibited and about 40% of female adults showed morphological ovarian abnormalities. Female adults with no morphological ovarian abnormality oviposited fewer than untreated female adults and the hatchability of oviposited eggs was lower.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Japanese)
Full text of article
Database assignments for author(s): Tadashi Miyata

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Spodoptera litura		Japan