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Lepidoptera genitalia

About: Lepidoptera genitalia is a research topic. Over the lifetime, 10114 publications have been published within this topic receiving 78876 citations. The topic is also known as: Uncus.


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Journal ArticleDOI
TL;DR: The results suggest this nucleopolyhedrovirus may be monospecific, and that it is unlikely to present a risk to any nontarget species, which makes it highly suitable for use as a bioinsecticide, particularly in urban areas and nature reserves.
Abstract: The browntail moth, Euproctis chrysorrhoea (L.), is periodically a major urban pest in the southern United Kingdom. High populations cause severe defoliation of a range of host plants, often in urban areas; and urticating hairs of larvae are highly irritating to humans. Control of outbreak populations is therefore desired. As an alternative to chemical insecticide sprays and labor intensive nest removal, nucleopolyhedrovirus (NPV) has been considered as a biological control. To evaluate if use of this spray would affect other lepidopterans we carried out detailed host range testing using a number of wild-caught lepidopteran species. Seventy-three species of Lepidoptera from 14 families, including four species of Lymantriidae and two species of hymenopteran sawfly, were found to be nonpermissive to E. chrysorrhoea NPV at a dose of 106 occlusion bodies per second instar. Some individuals from 11 species of Lepidoptera and one hymenopteran sawfly died of baculovirus infection, but none of these were shown, by dot blot analysis of DNA, to be infected with E. chrysorrhoea NPV. In two of these species, uninfected control larvae also died of infection, indicating that they carried an overt infection in the field. However, in eight species of Lepidoptera and one sawfly, there were no control deaths, providing possible evidence that an inapparent or latent infection had been stressed out of the wild-caught insects by inoculation with a high dose of E. chrysorrhoea NPV. Our results suggest this NPV may be monospecific, and that it is unlikely to present a risk to any nontarget species. These characteristics make it highly suitable for use as a bioinsecticide, particularly in urban areas and nature reserves.

35 citations

Journal ArticleDOI
TL;DR: The first evidence of the deterrent effect of egg extracts on the oviposit ion behavior of the ECB is reported, and the identification of active components as methyl esters of simple aliphatic acids is observed.
Abstract: The European corn borer (ECB) Ostrinia nubilalis (Lepidoptera, Pyralidae), a serious pest of corn is a polyphagous insect which can damage various crops such as cot ton and vegetables [1, 2]. In the United States, the average yield reduction caused by this insect in susceptible corn hybrids in 1986 was 40 % [3]. Females lay masses of 2 0 4 0 eggs mainly on the lower surfaces of the leaves. In this species, the egg masses are often observed at low density levels in the field [4] and the spatial distribution of the egg masses suggests a possible intraspecific regulation of the oviposit ion behavior. We assumed that the egg-laying behavior of this species could be chemically mediated by pheromones present on the egg masses. Oviposit ion-deterring pheromones (ODP) produced by eggs have been observed both in species which lay isolated eggs [5] and which aggregate eggs [6]. ODP can be produced by different sources. Larval frass extracts have been shown to be oviposit ion deterrents in species like Spodoptera littoralis [7] or Ostrinia nubilalis [8]. In most of the investigated species, the chemical nature of the ODP remains unknown. We report the first evidence of the deterrent effect of egg extracts on the oviposit ion behavior of the ECB, and the identification of active components as methyl esters of simple aliphatic acids. We also observed a chemically mediated regulation of the egg mass size. This pheromone may help to explain the distribution of ECB egg masses on plants and represent a possible mode of chemical control of this pest. The insects studied came from an INRA strain (Le Magneraud, France) annually infused with insects collected

35 citations

Patent
09 Nov 1995
TL;DR: In this article, the cis-jasmone may be used alone or in combination with one or more other volatiles of the Japanese honeysuckle flower, particularly linalool and/or phenylacetaldehyde.
Abstract: Compositions of cis-jasmone were found to effectively attract adult Lepidoptera. The cis-jasmone may be used alone or in combination with one or more other volatiles of the Japanese honeysuckle flower, particularly linalool and/or phenylacetaldehyde. By attracting the adult Lepidoptera to attracticidal baits and/or field traps, the attractants are useful for the control and monitoring of these agricultural pests.

35 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20241
2023819
20221,918
2021212
2020271
2019279