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Florida Entomologist
Article . 2019 . Peer-reviewed
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Florida Entomologist
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License: CC BY NC
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Article . 2019
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The Effects of Non-Host Plant Extracts on the Oviposition Deterrent and Ovicidal Activity of Conopomorpha sinensis Bradley (Lepidoptera: Gracillariidae)

Authors: Yao, Qiong; Dong, Yizhi; Li, Wenjing; Chen, Bingxu;

The Effects of Non-Host Plant Extracts on the Oviposition Deterrent and Ovicidal Activity of Conopomorpha sinensis Bradley (Lepidoptera: Gracillariidae)

Abstract

Conopomorpha sinensis Bradley (Lepidoptera: Gracilariidae) is the most destructive borer pest of litchi, Litchi chinensis Sonn., and longan, Euphoria longan (Lour.) Steud. (both Sapindaceae) fruits in Southeast Asia and southern China. In this study, ethanol extracts from leaves of Lantana camara L. (Verbenaceae), Wedelia chinensis (Osbeck) Merr. (Compositae), Eupatorium odoratum (L.) King and Robinson (Compositae), Bauhinia purpurea L. (Leguminosae), and Melaleuca leucadendron L. (Myrtaceae) were chosen to evaluate the oviposition deterrent effect and ovicidal activity of non-host plant extracts on C. sinensis. The plant extracts from L. camara, W. chinensis, and E. odoratum caused oviposition deterrent behavior by the adult C. sinensis. The ethanol extracts from L. camara were found to have the maximum effective deterrence (i.e., 93.5% in the choice test, and 73.6% in the no-choice test). This led to the lowest oviposition activity index (−0.9) and the highest reduction level of egg-laying (3.3 eggs daily per female). In the assessment of ovicidal activity of the plant extracts on C. sinensis, W. chinensis caused diminished hatching rate (< 60%) at concentrations of 0.01 g·mL−1 and 0.1 g·mL−1. These encouraging results suggest that secondary substances from L. camara and W. chinensis have effective oviposition deterrent and ovicidal activities to C. sinensis, and these substances have potential as plant protectants for litchi and longan fruits. Resumen Conopomorpha sinensis Bradley (Lepidoptera: Gracilariidae) es la plaga barrenadora mas destructiva de los frutos de litchi y del ojo de dragon en el sudeste de Asia y el sur de China. En este estudio, escojimos extractos de etanol de hojas de Lantana camara L. (Verbenaceae), Wedelia chinensis (Osbeck) Merr. (Compositae), Eupatorium odoratum (L.) King & Robinson (Compositae), Bauhinia purpurea L. (Leguminosae) y Melaleuca leucadendron L. (Myrtaceae), para evaluar el efecto disuasorio sobre la oviposicion y actividad ovicida de extractos de plantas no hospederas sobre C. sinensis. Los extractos de plantas de L. camara, W. chinensis y E. odoratum causaron un comportamiento disuasorio de la oviposicion en los adultos de C. sinensis. Se descubrio que los extractos de etanol de L. camara tienen el mayor efecto de disuasion efectiva (93.5% en la prueba de eleccion y 73.6% en la prueba de no eleccion). Esto resulto en el indice mas bajo de actividad de oviposicion (–0.9) y al mayor nivel de reduccion de puesta de huevos (3.3 huevos diarios por hembra). En la evaluacion de la actividad ovicida de los extractos de plantas sobre C. sinensis, W. chinensis causo una disminucion de la tasa de eclosion (< 60%) a concentraciones de 0.01 g·mL-1 y 0.1 g·mL-1. Estos resultados prometores sugieren que las sustancias secundarias de L. camara y W. chinensis tienen actividades efectivas de prevencion de oviposicion y ovicidas para C. sinensis, y que estas sustancias tienen un potencial como protectores de plantas para las frutas del litchi y del ojo de dragon. Key Words: fecundity; litchi; longan View this article in BioOne https://doi.org/10.1653/024.102.0202

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Biodiversity, Taxonomy

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
5
Top 10%
Average
Average
Green
gold