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http://dx.doi.org/10.5656/KSAE.2012.10.0.049

Occurrence of Grapholita dimorpha in Korean Pear Orchards and Cross-trapping of Its Sibling Species, Grapholita molesta, to a Pheromone Lure  

Jung, Chung Ryul (Department of Bioresource Sciences, Andong National University)
Ahn, Jeong Joon (Department of Bioresource Sciences, Andong National University)
Eom, Hoon Sik (Korea Plants Environmental Research)
Seo, Jung Heun (GAIA)
Kim, Yonggyun (Department of Bioresource Sciences, Andong National University)
Publication Information
Korean journal of applied entomology / v.51, no.4, 2012 , pp. 479-484 More about this Journal
Abstract
The occurrence of plum fruit moth, Grapholita dimorpha, has been recently reported in apple orchards in Korea. It has been suspected that G. dimorpha and its related species, G. molesta, may occur simultaneously in other host plants. This study reports the occurrence of G. dimorpha in pear orchards of different localities in Korea. The identification of G. dimorpha was determined by morphological characters and the DNA marker. The cross-trapping of both species may be possible because the major sex pheromone (SP) compositions for the two species are similar. From the monitoring data, G. dimorpha and G. molesta were caught in SP lure traps of G. dimorpha and both species were also caught in SP lure traps of G. molesta. This cross-trapping of G. molesta to a SP lure of G. dimorpha varied significantly among pear orchards in different geographical localities. Furthermore, the occurrence peaks of the two species were not coincidental in all monitored orchards. These suggest that monitoring data obtained from each SP trap of both species in pear orchards may be mixed with two species, which would result in the over-estimation of population density and peak frequency on both species in pear orchards.
Keywords
Grapholita dimorpha; Grapholita molesta; Sex pheromone; Monitoring; Pear orchard;
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Times Cited By KSCI : 4  (Citation Analysis)
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