Abstract
물달개비는 한국의 논에서 문제되는 난방제 잡초중의 하나이다. 물달개비의 생물학적 방제 인자로 물달개비바구미를 선발하였다. 생물학적 방제에 이용하기 위해 2006년과 2007년 계대사육을 실시하여 형태적, 생태적 특징을 조사하였다. 이 종은 1년에 한세대만 경과하며 성충으로 월동하고, 성충은 6월 하순부터 9월 하순까지 발생한다. 물달개비바구미는 알에서 성충까지 <TEX>$22{\pm}0.7$</TEX>일이 소요된다. 주요 농작물과 수생식물 60종을 대상으로 기주특이성을 조사 결과 물달개비의 생물학적 방제 곤충으로서의 가능성을 보였다. Monochoria vaginalis var. plantaginea (Pontederiaceae) is one of the most problematic weed in the rice field in Korea. Tanysphyrus (Tanysphyroides) major was selected as a potential biological control agent for M. vaginalis. Continuous rearing of T. (T.) major was carried out from 2006 to 2007, and its morphological characteristics and ecological characteristics were investigated. This species has a single generation per year, over-wintering as an adult stage. The emergence of adults starts in later June and last until September. These observations indicate that T. (T.) major takes <TEX>$22{\pm}0.7$</TEX> days to develop from egg to adulthood. Host specificity test showed that finally selected this species was suitable candidates for the biological control of M. vaginalis var. plantaginea since it showed negative host specificity against major 60 test crops.
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