Results 81 to 90 of about 4,675 (226)
1989~1992年に東南アジアと日本で採集したトビイロウンカとセジロウンカの感受性を比較した. トビイロウンカ: 1989, 1990年に採集したマレーシア個体群のマラソン感受性は日本のそれの約1/7と低く, ダイアジノン, カルボスルファン感受性も若干低い傾向が認められた. また1992年の検定結果では, ベトナム南部及びタイ個体群のマラソン感受性は, 日本及びベトナム北部のそれより若干低かった. しかし, 他の薬剤に対する感受性はこれらの個体群間で大きな差はなかった. セジロウンカ: 1989~1990年個体群の薬剤感受性を比較した結果, マレーシア個体群のマラソン感受性は日本のそれの約1/6と低かった. しかし, 他の薬剤に対する感受性はこれらの個体群間でほとんど差はなかった.
ENDO, Shozo, TSURUMACHI, Masaichi
openaire +2 more sources
Advances in molecular biology have accelerated rice breeding for resistance to Asian planthoppers. However, experience shows that planthoppers quickly adapt to resistance in tropical overwintering areas.
Horgan, Finbarr G.
core
Planthoppers: New Threats to the Sustainability of Intensive Rice Production Systems in Asia [PDF]
Rice is the staple food for around half the world’s people and about three-quarters of a billion of the world’s poor depend on rice. Each year, an additional 50 million rice consumers are added to the world population, which means that rice production ...
Heong, K.L., Hardy, B.
core +1 more source
Effects of TT9-3 and TT9-4, which are two homozygous strains of transgenic Bt rice, on the dispersal of planthoppers and leafhoppers as well as their egg parasitic wasps were evaluated in the field.
CHEN Mao +4 more
doaj +1 more source
Previous studies have confirmed that choosing nozzles that produce coarser droplets could reduce the risk of pesticide spray drift, but this conclusion is based on a large volume of application, and it is easy to ignore how this impacts the control ...
Pengchao Chen +7 more
doaj +1 more source
Beyond birds: rethinking bird‐centered pathogen models in light of insect migration
Migration redistributes biomass, nutrients, and pathogens across ecosystems. For decades, migratory birds have been treated as the default long‐distance pathogen vectors, shaping both conceptual frameworks and empirical models of disease ecology.
Virginia Morandini
wiley +1 more source
Transmembrane channel-like (TMC) genes encode a family of evolutionarily conserved membrane proteins. Mutations in the TMC1 and TMC2 cause deafness in humans and mice. However, their functions in insects are is still not well known.
Ya-Long Jia +6 more
doaj +1 more source
Diversity of Resilin Incidence in the Insect Leg
Resilin incidences in the insect cuticle are commonly detected by fluorescence microscopy using the property of Resilin protein matrices to emit blue light after excitation with UV light. This indirect method produces significant background signal.
Steven Lerch, Bernard Moussian
wiley +1 more source
Population Fluctuations and Forecasting Population Densities of Brown planthoppers
褐飛蝨為台灣最重要水稻害蟲之一,如防治不當則導致水稻品質及產量降低,造成莫大的損失。台灣每年亦會遭受海外蟲源之遷入,每年遷入時間及族群大小不一,且蟲害可長距離遷移,遷入台灣之害蟲來源區域甚廣,再加上大環境氣候異常,害蟲族群之變化更劇烈,有待長期監測,以掌握族群之變動。因此配合長期田間害蟲族群發生動態,建立蟲數與氣象因子之模式,來發展提早偵測害蟲之大發生,為早期預警、適時施藥防治、達到水稻安全生產目的之重要目標。Brown planthoppers are important pest insects ...
黃守宏, 蔣國司, 黃愉閔
core
A long-distance migration analysis of rice planthoppers using computer simulations
Since long-distance migration of rice planthoppers immigrating into Japan in the Bai-u rainy season had been analyzed by using 2-dimensional methods, there were limitations of precision in both estimating migration sources and predicting migrations.
OTSUKA, Akira +2 more
core +1 more source

