Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Seasonal Phenology of the Cryptic Mealybug, Pseudococcus cryptus (Homoptera: Pseudococcidae) Based on Attraction of Adult Males to a Sex Pheromone Trap

성페로몬 트랩에 유인된 수컷 성충에 의한 귤애가루깍지벌레의 연중 발생특성

  • Song, Jeong-Heub (Division of Sustainable Agricultural Research, Jeju Agricultural Research and Extension Services) ;
  • Choi, Kyung-San (Agricultural Research Center for Climate Change, National Institute of Horticultural & Herbal Science, RDA) ;
  • Hong, Soon-Yeong (Division of Sustainable Agricultural Research, Jeju Agricultural Research and Extension Services) ;
  • Lee, Shin-Chan (Division of Sustainable Agricultural Research, Jeju Agricultural Research and Extension Services)
  • 송정흡 (제주특별자치도농업기술원 친환경연구과) ;
  • 최경산 (국립원예특작과학원 온난화대응농업연구센터) ;
  • 홍순영 (제주특별자치도농업기술원 친환경연구과) ;
  • 이신찬 (제주특별자치도농업기술원 친환경연구과)
  • Received : 2011.12.27
  • Accepted : 2012.05.10
  • Published : 2012.09.01
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Abstract

The cryptic mealybug, Pseudococcus cryptus, has been increasingly damaging citrus, particularly those plants grown in plastic greenhouses. This study was conducted to monitor the seasonal phenology of adult male cryptic mealybugs and to determine the timing for control using a sex pheromone trap. Adult males responded to a synthetic sex pheromone and trap color. An increasing number of males were attracted to the traps with increasing concentrations of sex pheromone up to 5 mg. The males occurred annually four times and had three cohorts at a time due to different overwintering developmental stages. After overwintering the adult males began to in mid-late April. A positive correlation was observed between the number of adult males caught in traps and the mean density per twig of all motile stages except first stage nymphs of the cryptic mealybugs. The peak time for the first nymph to occur was estimated from the maximum attraction time of the males, and the cumulative degree days (DD) was 350 DD, similar with the preoviposition period.

최근 들어 하우스재배 감귤을 중심으로 발생이 증가하고 있는 귤애가루깍지벌레에 대해 효율적인 발생예찰과 함께 방제시기를 결정하기 위하여 합성 성페로몬을 이용하여 시기별 발생특성을 조사하였다. 귤애가루깍지벌레의 수컷 성충은 합성 성페로몬뿐만 아니라 색에도 반응하였다. 성페로몬의 농도는 5.0 mg까지 농도가 증가할수록 유인력이 높았다. 귤애가루깍지벌레 수컷 성충은 연 4회 발생되고 있었으며, 월동 후 수컷 성충이 처음 발생되기 시작하는 시기는 4월 중하순이었다. 수컷 성충발생이 가장 많은 시기는 제 1세대 발생기인 7월 상중순이었다. 성페로몬트 랩에 유인된 귤애가루깍지벌레 수컷 성충은 한 세대 내에서 3회의 발생성기가 나타났으며, 이는 귤애가루깍지벌레가 1~3령 약충으로 월동하기 때문인 것으로 추정되었다. 트랩에 유인된 수컷 성충의 밀도와 나무의 가지당 평균밀도와는 높은 정(+)의 상관을 갖고 있었다. 수컷 성충의 최대 유인시기를 이용하여 1령 약충 발생 시기를 추정할 수 있었으며, 그 적산온도는 산란전 기간과 비슷한 350DD이었다.

Keywords

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