Studies on the cold-hardiness and overwintering of Spodoptera litura F. (Lepidoptera: Noctuidae). II. The lower lethal temperature.

Matsuura, Hiroichi; Naito, Akira

doi:10.1303/jjaez.35.45

Cited by 4 publications

(1 citation statement)

References 2 publications

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“…Its larvae are a major cosmopolitan pest of a wide range of crops (Skibbe et al, 1995). Matsuura & Naito (1997) reported that S. litura causes serious widespread damage to many agricultural crops in the far southern of the Central Japan every year.…”

Section: Introductionmentioning

confidence: 99%

Reduction in egg hatch after a sublethal dose of chlorfluazuron to larvae of the common cutworm, Spodoptera litura

Perveen

2005

Physiological Entomology

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Reduction in egg hatch after a sublethal dose of chlorfluazuron to larvae of the common cutworm, Abstract. The effects of a sublethal dose of chlorfluazuron on egg hatching in Spodoptera litura are examined under laboratory conditions. When LD 10 of chlorfluazuron is topically applied to newly moulted fifth-instar larvae of either sex, a significant reduction in both the number of eggs laid and subsequent hatching is observed after mating but no significant differences in daily of oviposition are observed when compared with the controls. In addition, examination of the unhatched eggs reveals that the number of unfertilized eggs is greater than those that were fertilized but there are significantly more unfertilized eggs laid by treated insects. Interference by chlorfluazuron, transferred by copulation through sperm fluids or ova, appears improbable. All the fertilized unhatched eggs in the treated crosses die at an earlier stage than those of the controls. In the female-treated crosses, the egg size is significantly reduced compared with the control or male-treated crosses. During mating, the treated-males transferred significantly lower-weight spermatophores into the females. The weight of spermatophores transferred by untreated males is the same to both treated and untreated females. The duration of mating is not affected by chlorfluazuron treatment.

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Section: Introductionmentioning

confidence: 99%