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http://dx.doi.org/10.5656/KSAE.2016.07.0.038

Distribution Ratios of Grapholita molesta and G. dimorpha Larvae in Pest-damaged Fruits of Five Rosaceae Fruit Trees  

Yang, Chang Yeol (National Institute of Horticultural and Herbal Science, Rural Development Administration)
Kim, Dong Hwan (National Institute of Horticultural and Herbal Science, Rural Development Administration)
Kim, Hyeong Hwan (National Institute of Horticultural and Herbal Science, Rural Development Administration)
Kang, Taek Jun (National Institute of Horticultural and Herbal Science, Rural Development Administration)
Cho, Young Sik (National Institute of Horticultural and Herbal Science, Rural Development Administration)
Publication Information
Korean journal of applied entomology / v.55, no.4, 2016 , pp. 313-317 More about this Journal
Abstract
The congener and sympatric species, Grapholita molesta (Busck) and G. dimorpha Komai, are economically important pests against various Rosaceae fruit trees in Korea. In this study, we identified the species from the larvae of these two insects collected from damaged fruits of peach, plum, apple, pear, and quince by using a molecular diagnostic method and compared the distribution ratios of the two species within the fruits of each of these trees. Most (99.7%) of the larvae collected from peach fruits were identified as G. molesta, while all of the larvae found in plum fruits were G. dimorpha. Both species were found in the other three fruits, but G. molesta was significantly dominant in pear fruits. G. dimorpha was more abundant in apple and quince fruits, without any significant difference between the distribution ratios of two insects. The results suggest that development of further realistic strategies is necessary for the management of these two pests in Korean orchards.
Keywords
Rosaceae fruit trees; Fruit damage; Grapholita molesta; Grapholita dimorpha; Dominant species;
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