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RISS 인기검색어
- 검색키워드
- 저자 : Y. Andi Trisyono (검색결과 2 건)
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Y. Andi Trisyono,Valentina E.F. Aryuwandari,Teguh Rahayu,Edhi Martono 한국응용곤충학회 2017 Journal of Asia-Pacific Entomology Vol.20 No.2
Background: Resurgence of the rice brown planthopper (BPH), Nilaparvata lugens Stål (Hemiptera: Delphacidae) is often induced by application of insecticides at sublethal concentrations. Etofenprox is an insecticide that has been registered and used in Indonesia to control BPH. The objective of this study was to determine the effects of etofenprox on the fecundity of susceptible-laboratory adapted population of BPH. Results: Etofenprox was applied at its LC50 (98.98 mg a.i. l−1) and its sublethal concentration (LC10: 2.26 mg a.i. l−1) to the third instars and adults. Different exposure times for the third instars (one and three-consecutive generations) were employed to determine a short and long term effects of etofenprox. Effect on adults was evaluated by exposing five pairs of gravid females on etofenprox treated and non treated rice plants. Etofenprox applied at the estimated LC50 and LC10 did not stimulate an increase in fecundity of females produced from nymphs exposed to etofenprox for one and three consecutive generations. Exposure of gravid females on the treated rice plants did not change the production of nymphs compared to the control females. Conclusion: These findings suggest that the risk of BPH resurgence by etofenprox through increasing the fecundity is minimum.
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Teguh Rahayu,Y.Andi Trisyono,Witjaksono 한국응용곤충학회 2018 Journal of Asia-Pacific Entomology Vol.21 No.3
The Asian corn borer, Ostrinia furnacalis (Guenée) (Lepidoptera: Crambidae) is an economically important pest of corn. Finding simple, cheap, and suitable rearing techniques of O. furnacalis is an urgent need to support research for management of this insect. This research aimed to determine the suitability of a read bean and rice branbased artificial diet used for mass rearing of this insect since 2009. The tested artificial diet was compared with the natural diet (sweet corn kernel) and each diet was tested in individual rearing method (one larva in each vial). The criteria used to justify the quality of diet and mass rearing procedure were based on the fitness of O. furnacalis. The degree of fitness was based on life history, growth, and development. In general, the fitness parameteres observed from O. furnacalis reared in the artificial diet at 25.7 ± 1.6 °C with 57.7 ± 3.8% RH, and L12:D12 were similar than those in the natural diet. Therefore, the existing artificial diet and rearing procedure were considered suitable and qualified for O. furnacalis. It is important to periodically check the laboratory colony to ensure that they have similar fitness to those found in the natural population.
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