Results 231 to 240 of about 11,900 (265)
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Density-Related Migration in Planthoppers (Homoptera: Delphacidae): The Role of Habitat Persistence

The American Naturalist, 1991
We investigated the selective pressures associated with the possession of wings and migration in wing-dimorphic planthoppers (Homoptera: Delphacidae).
George K. Roderick   +3 more
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Host plant relations in the planthopper genus Ribautodelphax (Homoptera, Delphacidae)

Ecological Entomology, 1987
ABSTRACT. 1. Host plant relations of closely related species and pseudogamous triploid forms of the planthopper genus Ribautodelphax were studied.2. From field data and experimental results it is concluded that eleven European Ribautodelphax species and undescribed taxa are monophagous or oligophagous on different grass species.
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OXALIC ACID AS A SUCKING INHIBITOR OF THE BROWN PLANTHOPPER IN RICE (DELPHACIDAE, HOMOPTERA)

Entomologia Experimentalis et Applicata, 1980
Oxalic acid, isolated from leaf sheath extract of rice, has been identified as a potent sucking inhibitor against the brown planthopper. Potassium and sodium oxalate at concentrations of 0.1%–0.2% completely inhibited sucking on a 15% sucrose solution.
B. O. Juliano   +4 more
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ARGONAUTE SUBFAMILY GENES IN THE SMALL BROWN PLANTHOPPER, Laodelphax striatellus (HEMIPTERA: DELPHACIDAE)

Archives of Insect Biochemistry and Physiology, 2015
Argonaute (AGO) proteins are essential catalytic components of the RNA‐induced silencing complex and play central roles in RNA interference. Using a combination of bioinformatics and rapid amplification of cDNA ends (RACE) methods, putative AGO subfamily members, ls‐AGO1 and ls‐AGO2, were cloned and characterized from the small brown planthopper ...
Yan-Ru Zhou   +5 more
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Cell culture of the rice brown planthopper, Nilaparvata lugens Stål (Hemiptera: Delphacidae)

In Vitro Cellular & Developmental Biology - Animal, 2014
The rice brown planthopper (BPH), Nilaparvata lugens (Stål), is one of the most destructive insect pests of rice in Asia. Although resistant rice varieties can be effective in managing planthopper populations, BPH has repeatedly been able to overcome resistant rice varieties. It is possible that BPH adaptation to resistant rice varieties may be related
Xiaoping Yu, Yolanda H. Chen, Yipeng Xu
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The planthopper genus Stenocranus in Canada: implications for classification of Delphacidae (Hemiptera) [PDF]

open access: possibleThe Canadian Entomologist, 2006
AbstractThe Canadian species of Stenocranus Fieber are keyed by external characters correlated with species concepts defined by known genitalic characters. Stenocranus is differentiated from Terauchiana Matsumura (Asian; here reported from the New World for the first time) and Embolophora Stål (from Africa) by the remarkable development of the female ...
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Flight duration of the brown planthopper, Nilaparvata lugens (Homoptera: Delphacidae)

Ecological Entomology, 1983
ABSTRACT. The brown planthopper, Nilaparvata lugens (Stål), is a major pest of rice in Asia. It is known to make wind‐assisted migratory flights each year to colonize the summer rice growing areas of China, Japan and Korea. Modelling windborne displacements between rice growing areas in Asia requires migratory behaviour and flight duration to be ...
J. I. Magor, L. J. Rosenberg
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The three taro planthoppers: species recognition inTarophagus(Hemiptera: Delphacidae)

Bulletin of Entomological Research, 1989
AbstractThe taro-feeding delphacid genusTarophagusis revised. Three species are recognized:T. colocasiae(Matsumura) stat. rev. & comb. n. with whichT. proserpina taiwanensisWilson is synonymized;T. persephone(Kirkaldy) with whichT. proserpinoides(Muir) andT. proserpina australisFennah are synonymized; andT. prosperpina(Kirkaldy).
Manfred Asche, Michael R. Wilson
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Influence of crop husbandry on rice planthoppers (Hemiptera; Delphacidae) in the Solomon Islands

Agro-Ecosystems, 1974
Abstract Husbandry practices which led to the rice planthoppers Nilaparvata lugens Stal and Sogatella furcifera Horv. (Hemiptera; Delphacidae) becoming severe pests at Ilu on Guadalcanal are identified. In the system of two irrigated rice crops a year at Ilu, rice was grown in every month of each year from 1960 to 1966. Overlapping of an extended
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THE OPTIMUM POPULATION STRATEGY FOR PLANTHOPPERS (HOMOPTERA: DELPHACIDAE) IN STABLE MARSH HABITATS

The Canadian Entomologist, 1978
AbstractThe wing-morph composition of populations of planthoppers exploiting stable and temporally uncertain resources was determined. In stable habitats like salt and fresh water marshes, the optimum population strategy of most planthoppers is to produce flightless brachypters which can efficiently use and remain on the immediate resource. Macropters,
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