Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Seasonal Occurrence and Attraction of Egg Parasitoid of Bugs, Ooencyrtus nezarae, to Aggregation Pheromone of Bean Bug, Riptortus clavatus

톱다리개미허리노린재의 집합페로몬에 의한 노린재류의 난기생봉 Ooencyrtus nezarae의 유인과 발생소장

  • Huh Wan (Institute of Agriculture and Life Sciences, Gyeongsang National University) ;
  • Park Chung-Gyoo (Institute of Agriculture and Life Sciences, Gyeongsang National University)
  • 허완 (경상대학교 농업생명과학대학) ;
  • 박정규 (농업생명과학연구원)
  • Published : 2005.06.01
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Abstract

Seasonal occurrence of the egg parasitoid of bugs, Ooencyrtus nezarae (Hymenoptera: Encyrtidae), was monitored at soybean fields and university campus using traps baited with aggregation pheromone of bean bug, Riptortus clavatus, in Jinju, Gyeongnam province, Korea. The female O. nezarae captured at university campus in 2003 and 2004 was 317.5 and 103.4 times as many as males, respectively, and it was 12.6 times at soybean field in 2004. The female began to occur from late August, showing its peak around September 20 at soybean field in 2004. At university campus in 2003 and 2004, the female began to occur from mid or late August, and showed its peak early or mid September. At the two monitoring sites the catches of female sharply declined after October The E2HZ3H only showed attractiveness to O. nezarae, among three components of the aggregation pheromone of bean bug, (E)-2-hexenyl (Z)-3-hexenoate (E2HZ3H), (E)-2-hexenyl (E)-2-hexenoate (E2HE2H), and myristyl isobutyrate (MI). A mixture in a ratio of 20:20:10 or 16.7:16.7:16.7 of E2HZ3H:E2HE2H:MI attracted significantly more females than the mixture of 7:36:7 ratio did. This higher attractiveness of the former two blends may be attributed to the higher amounts of E2HZ3H in the blends.

경남진주의 콩포장과 대학 캠퍼스에서 톱다리개미허리노린재의 집합페로몬을 사용하여 난기 생봉인 Ooencyrtus nerarae(Hymenoptera: Encyrtidae)의 발생소장을 조사하였다. 2003년과 2004년에 대학 캠퍼스에 설치된 트랩에 유살된 암컷의 수는 수컷 유살수의 317.5배와 103.4배이었고, 2004년 콩포장에서는 12.6배이었다. 콩포장에서 O. nezarae의 암컷은 8월 하순부터 유살되기 시작하여 9월 20일 전후에 가장 많이 유살되었다. 2003년과 2004년에 대학 캠퍼스에서는 8월 중하순부터 밀도가 증가하여 9월 상중순에 최성기를 나타내었다. 두 조사지역에서 모두 10월 이후에는 거의 발생하지 않았다. 톱다리개미허리노린재의 집합페로몬 세 성분, 즉 (E)-2-hexenyl (Z)-3-hexenoate(E2HZ3H)와 (E)-2-hexenyl (E)-2-hexenoate(E2HE2H) 및 myristyl isobutyrate(MI) 중에서 E2HZ3H 만이 O. nerarae에 대해 유인력을 나타내었다. E2HZ3H:E2HE2H:MI를 7:36:7로 배합한 것보다는 20:20:10이나 16.7:16.7:16.7으로 배합한 트랩에 더 많은 수가 유인되었는데, 이는 배합된 E2HZ3H의 량 때문인 것으로 추정된다.

Keywords

References

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