DISTRIBUSI SPASIAL, RESPONS NUMERIK, DAN AGREGASI Paederus fuscipes SEBAGAI PREDATOR Nilaparvata lugens DI SAWAH

• المؤلفون الرئيسيون: , ISMI RINARTI, , Prof. Dr. Ir. FX. Wagiman, S.U.
• التنسيق: Theses and Dissertations NonPeerReviewed
• منشور في: [Yogyakarta] : Universitas Gadjah Mada 2013
• الموضوعات: ETD
• الوصول للمادة أونلاين: https://repository.ugm.ac.id/125173/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=65338

The purpose of this research is to analyze and describe the ecological characteristics of predatory rove beetle (Paederus fuscipes) in its interaction with brown plant hopper (Nilaparvata lugens), comprised of their spatial distribution, the numerical response of the predator against its prey in rice field, and aggregation of the predator on rice hill with a highest population of prey in the rice field. The research was conducted in October until December 2012 in Sido Agung, Godean, Sleman, Yogyakarta, from pre-planting to milky stage. Pitfall traps as many as 36 units were placed at systematic random for 24 hours before planting in the rice field bund to catch the predators. In six seedbeds, the P. fuscipes and N. lugens were counted in situ at five-point, which were taken. At random observations of the predator and prey was conducted on 100 rice hills at 7, 14, 21, 30 days after transplanting (DAT), primordia, flowering, and milky stages. The rice hills were taken at random. Results showed that the P. fuscipes did not found in the rice fields at pre-planting, however the predator and brown plant hopper were found in the rice plantations. Distribution pattern of the predator in the seedbeds and in the rice plantations was uniform. Distribution pattern of the N. lugens in the seedbed was random, while in the rice at 7, 14, 21 DAT, primordia, and flowering were uniform, and at 30 DAT and milky stage were clumped. The P. fuscipes in the rice field showed a very strong numerical response against N. lugens as indicated by the correlation R = 0.832, and it did not showed aggregation on the rice hill with the highest population density of N. lugens.