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.
The study was conducted to develop the full seasonal phenology model of G. molesta in pear orchard. G. molesta is a multi-voltine insect with four to five generations per year depending on temperature, food resources and geographic location. For precise model construction, information on temperature-dependent development and the distribution of developmental completion of overwinteirng and summer G. molesta population was used. The performance of model was based on single cohort population of G. molesta. The validation of model system was performed with the male moth catches in sex pheromone-baited traps of pear orchards in four pear production regions (Anseong, Icheon, Naju and Ulju), three apple production regions (Andong, Chungju and Geochang), and four plum orchards (Uiseong) of Korea in 2010 and 2011, respectively. The observed phenology of seasonal population of G. molesta was explained by our model system. The predicted dates for the cumulative 50% male moth catches per each generation were within seven days variation per each generation. The precise predictive model of G. molesta adult occurrence could help decision making and enhancing control efficacy.
Insect pest monitoring program in subsistence warehouses can detect pest problems in early infestation stages. Temporal and spatial distributions of pests produced by monitoring allows facility managers and pest control operators to visualize pest problems and evaluate effectiveness of cleaning, sanitation and pest management practices. Pheromone-based insect monitoring traps were placed to study temporal and spatial distribution of Lepidopteran and Coleopteran stored product pests in two central distribution centers of United States Military Forces in the Republic of Korea, from March to December 2008. The two distribution centers receive store and issue subsistence and they are located in two different cities, Seoul and Taegu. As a result, three pests, Plodia inter punctella Hübner (Indian meal moth), Lasioderma serricorne F. (cigarette beetle), and Trogoderma variabile Ballion (warehouse beetle), were detected on the traps. P. interpunctella was most abundant, followed by L. serricorne and T. variabile. Different phenologies and spatial distribution of each species were seen from the two warehouses, that were related with internal temperature of the two warehouses and food availability. The program benefited to lead a better understandings for existence and extent of local pest problems in the two subsistence distribution centers, and also helped to find effective pest management periods and locations.