• Title, Summary, Keyword: Grapholita

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A Review of the Genus Grapholita (Lepidoptera, Tortricidae) in North Korea

  • Byun, Bong-Kyu;Lee, Bong-Woo;Bae, Kwan-Ho;Lee, Kyung-Jae
    • Animal Systematics, Evolution and Diversity
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    • v.28 no.4
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    • pp.291-296
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    • 2012
  • In North Korea, the first report of the family Tortricidae, comprising 34 species, was made in 1969. It includes three species of the genus Grapholita (G. inopinata, G. molesta, and G. turionana). Among them, G. turionana is now placed under the genus Blastesthia. In the present study, a total of four species of the genus Grapholita are recognized from North Korea, based on material deposited in the Hungarian Natural History Museum, Hungary. Of them, Grapholita molesta (Busck), is reported for the first time from North Korea. In the present study, G. inopinata was not found. All the known species are enumerated with illustrations of adults and genitalia. Also a key for the genus is given.

Occurrence Patterns of Three Major Fruit Moths, Grapholita molesta, Grapholita dimorpha and Carposina sasakii, Monitored by Sex Pheromone in Plum Orchards (자두과원에서 성페로몬을 이용한 복숭아순나방, 복숭아순나방붙이, 복숭아심식나방의 발생 패턴)

  • Jeong, Sun-A;Sah, Lalit Prasad;Ahn, Jeong Joon;Kim, Young-Il;Jung, Chuleui
    • Korean journal of applied entomology
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    • v.51 no.4
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    • pp.449-459
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    • 2012
  • Fruit borers such as Grapholita molesta, G. dimorpha and Carposina sasakii are major pests of plum in Korea. Population densities and seasonal occurrence were monitored using the synthetic sex pheromone trap in Uiseong and Gyeongsan, two important major plum growing area in Korea. In 2010 and 2011, adults of G. molesta were caught from mid April with the peak of late April, and then undergone three more generations in Gyeongsan. Grapholita dimorpha appeared from late April and they showed three peaks until late September. Both Grapholita species occurred a few days later in Uiseong than in Gyeongsan where the latitude is $1^{\circ}$ lower. There was no difference of the phenological occurrence of C. sasakii between Gyeongsan and Uiseong, showing the same patterns of two or three peaks. Population size was in order of G. molesta, G. dimorpha and C. sasakii with 63:16:20 and 47:35:18 in Gyeongsan and 51:18:31 and 46:13:36 in Uiseong, in 2010 and 2011 respectively. There was no difference between the numbers of Grapholita species caught in the trap installed inside and outside of the orchards.

Molecular Diagnosis of Grapholita molesta and Grapholita dimorpha and Their Different Occurrence in Peach and Plum (복숭아순나방과 복숭아순나방붙이의 분자동정법 개발 및 복숭아와 자두에서의 발생차이)

  • Ahn, Seung-Joon;Choi, Kyung-Hee;Kang, Taek Jun;Kim, Hyung Hwan;Kim, Dong-Hwan;Cho, Myoung Rae;Yang, Chang Yeol
    • Korean journal of applied entomology
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    • v.52 no.4
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    • pp.365-370
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    • 2013
  • The plume fruit moth, Grapholita dimorpha Komai, a fruit tree pest occurring in the northeast Asia, was firstly reported to infest apple in Korea in 2009, but its direct damage to other fruit trees has been poorly studied. In this study, we investigated shoots and fruits of both peach and plum trees and compared their damage rates by G. dimorpha to those by G. molesta, a congeneric species. In order to discriminate the two moth species, we developed a molecular diagnosis method using species-specific primer sets on different PCR conditions and distinguished the two species collected from the damaged shoots or fruits. The shoots and fruits of peach were infested mostly by G. molesta. However, in plums, the shoots were damaged by G. molesta and the fruits mostly by G. dimorpha. In addition, these two species showed a clear difference in host preference in fruit damage, where 92.5% of the Grapholita moths collected in peach fruits were identified as G. molesta, but 97.0% of the moths in plum fruits were G. dimorpha. The difference of the damage between the two fruit trees may give important information for monitoring of the two moth species in these orchards.

Efficacy of Commercial Mating Disruptors on Field Overwintering Populations of Oriental Fruit Moth, Grapholita molests (Busck) (야외 월동세대 복숭아순나방(Grapholita molesta (Busck))에 대한 교미교란제의 효과)

  • Jung, Sung-Chae;Park, Chun-Woo;Park, Man-Woong;Lee, Soon-Won;Choi, Kyung-Hee;Hong, Yong-Pyo;Kim, Yong-Gyun
    • Korean journal of applied entomology
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    • v.45 no.2
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    • pp.235-240
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    • 2006
  • Efficacies of two commercial mating distruptor (SPLAT$^{(R)}$ and Isomate$^{(R)}$-ROSSO) were evaluated on field overwintering populations of Oriental fruit moth, Grapholita molesta (Busck), in four apple orchards. Based on the monitoring with sex pheromone traps, all the orchards (Youngchun, Kyungsan, Chungsong, and Youngju in Korea) exhibited significant overwintering populations from late April to late May. Both mating disruptors that were applied 10 days before the monitoring period significantly inhibited the male orientation to the monitoring lures, in which SPLAT type was more effective than Isomate type in the disrupting efficacy. The disruption of male orientation was highly correlated with the reduction in the early leaf damage caused mostly by G. molesta.

Field Assessment of Two Commercial Sex Pheromone Mating Disruptors on Male Orientation of Oriental Fruit Moth, Grapholita molesta (Busck) (두 가지 상용 교미교란제의 야외 복숭아순나방 (Grapholita molesta (Busck)) 수컷 유인교란 효과 비교)

  • Jung, Sung-Chae;Park, Chun-Woo;Park, Man-Woong;Kim, Yong-Gyun
    • The Korean Journal of Pesticide Science
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    • v.11 no.1
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    • pp.46-51
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    • 2007
  • In this study, two commercial mating disruptors were compared in terms of disruption of Oriental fruit moth, Grapholita molesta, male orientation, in which a new dispenser type, $SPLAT^{(R)}$, was compared with a current dispenser type, $Isomate^{(R)}$-M ROSSO. For this assessment, the last three year field monitoring data were analyzed for the efficacy of Isomate type dispenser. Then two commercial dispensers were compared in different localities with sub-locality replications during identical monitoring period from mid February to late August. There appeared to be four adult population peaks, in which the overwintering population size was positively correlated with the following reproductive population sizes. Isomate type dispenser effectively suppressed G. molesta populations during all growing seasons with some annual variation in its efficacy. Between two dispensers, SPLAT type was much effective. The difference in their efficacy may be caused by the difference in composition of major pheromone component.

Occurrence Pattern of an Unidentified Moth Captured by Sex Pheromone Trap of the Oriental Fruit Moth, Grapholita molesta, and Its Discriminating Molecular Markers (복숭아순나방(Grapholita molesta) 성페로몬 트랩에 포획된 미동정 나방의 발생패턴과 판별 분자지표)

  • Huh, Hye-Jung;Son, Ye-Rim;Kim, Yong-Gyun
    • Korean journal of applied entomology
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    • v.47 no.3
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    • pp.303-308
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    • 2008
  • An unidentified moth was captured in sex pheromone traps of the oriental fruit moth, Grapholita molesta, especially at spring season in apple orchards and their vicinity. Though the captured males were similar in appearance to G. molesta males, they were easily distinguished by a matted difference in body size. Their occurrence pattern was also similar to that of overwintering G. molesta population from April to May, at which more males were captured in the pheromone traps installed in the vicinity of apple orchards than within apple orchards. After May, they were no longer captured in the pheromone traps. To investigate any larval damage due to this unidentified moth, molecular markers needed to be developed. Four PCR-RFLP markers originated from cytochrome b region of mitochondrial DNA could distinguish this unidentified moth from G. molesta.

Systematic Study of the Genus Grapholita Treltschke (Lepldoptera, Tortricidae) from Korea

  • Bae, Yang-Seop;Park, Gyu-Taek
    • Animal cells and systems
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    • v.1 no.4
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    • pp.539-548
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    • 1997
  • Seven species of the genus Grapholita Treitschke, 1829 are recognized from Korea. Among them, G. funebrana (Treitschke) and G. sp. 1 are reported for the first time from Korea. The previously cited species with uncertainty of its distribution in the Korean peninsula, G. inopinata Heinrich, has not been found, and thus determined absent in the Republic of Korea. All the known species are redescribed with illustrations of adults, including genitalia of both sexes. Their known host plants are also listed. A key to the species of the genus, based on external and male genitalic characters, is given.

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Occurrence of Grapholita dimorpha in Korean Pear Orchards and Cross-trapping of Its Sibling Species, Grapholita molesta, to a Pheromone Lure (국내 배과원에 복숭아순나방붙이의 발생과 유사종 복숭아순나방의 페로몬 트랩 교차 유인)

  • Jung, Chung Ryul;Ahn, Jeong Joon;Eom, Hoon Sik;Seo, Jung Heun;Kim, Yonggyun
    • Korean journal of applied entomology
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    • v.51 no.4
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    • pp.479-484
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    • 2012
  • 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.

Estimation of Populations of Moth Using Object Segmentation and an SVM Classifier (객체 분할과 SVM 분류기를 이용한 해충 개체 수 추정)

  • Hong, Young-Ki;Kim, Tae-Woo
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.11
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    • pp.705-710
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    • 2017
  • This paper proposes an estimation method of populations of Grapholita molestas using object segmentation and an SVM classifier in the moth images. Object segmentation and moth classification were performed on images of Grapholita molestas moth acquired on a pheromone trap equipped in an orchard. Object segmentation consisted of pre-processing, thresholding, morphological filtering, and object labeling process. The classification of Grapholita molestas in the moth images consisted of the training and classification of an SVM classifier and estimation of the moth populations. The object segmentation simplifies the moth classification process by segmenting the individual objects before passing an input image to the SVM classifier. The image blocks were extracted around the center point and principle axis of the segmented objects, and fed into the SVM classifier. In the experiments, the proposed method performed an estimation of the moth populations for 10 moth images and achieved an average estimation precision rate of 97%. Therefore, it showed an effective monitoring method of populations of Grapholita molestas in the orchard. In addition, the mean processing time of the proposed method and sliding window technique were 2.4 seconds and 5.7 seconds, respectively. Therefore, the proposed method has a 2.4 times faster processing time than the latter technique.