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Discrimination Method of Brown Planthopper, Nilaparvata lugens(Stal) Nymphs by the Fluorescent Spots between Compound Eyes in Rice Paddies  

조성래 (경상남도농업기술원)
이동운 (상주대학교 농업과학연구소)
추호렬 (경상대학교 응용생물환경학과, 농업생명과학연구원)
박정규 (경상대학교 응용생물환경학과, 농업생명과학연구원)
신현열 (경상남도농업기술원 작물과)
김형환 (원예연구소 원예환경과)
Publication Information
Korean journal of applied entomology / v.42, no.4, 2003 , pp. 361-365 More about this Journal
Abstract
Several species of planthoppers such as brown planthopper, N. lugens (Stal) (BPH), smaller brown planthopper, Laodelphax striatellus (Fall n) (SBPH), and white-backed planthopper, Sogatella furcifera (Horv th) (WBPH) are distributed in Korean rice paddies but not easy to discriminate them in situ. Accurate discrimination of them is an indispensable process in the forecasting for their outbreak and control. Especially, innovative discrimination method for BPH was required because BPH was one of the most important insect pest of rice. Nymphs and adults of BPHs, SBPHS, and WBPHS, thus, were examined their morphological characteristics in the paddies and laboratory. The nymphs of BPH had different characters from those of SBPH and WBPH. The nymphs of BPH had white fluorescent spot between bottom of compound eye and antenna, while there was no that spot the other two species. The white spot was the brightest at the nymphs just after hatching and getting weaker as the nymph developed. At last the white spot was totally disappeared at the adult stage. This white spot was innovative criterium to discriminate nymphs of BPH, SBPH, and WBPH in rice paddies.
Keywords
Forecasting; White fluorescent spot; Laodelphax striatellus; Sogatella furcifera; Morphological characteristics;
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