scholarly journals Virulence of long-term laboratory populations of the brown planthopper, Nilaparvata lugens (Stål), and whitebacked planthopper, Sogatella furcifera (Horváth) (Homoptera: Delphacidae), on rice differential varieties

2009 ◽  
Vol 44 (1) ◽  
pp. 149-153 ◽  
Author(s):  
Khin Khin Marlar Myint ◽  
Hideshi Yasui ◽  
Masami Takagi ◽  
Masaya Matsumura
Keyword(s):  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Sogatella Furcifera ◽  
Laboratory Populations ◽  
Nilaparvata Lugens Stål ◽  
Whitebacked Planthopper ◽  
Differential Varieties

scholarly journals Rice Resistance Buffers against the Induced Enhancement of Brown Planthopper Fitness by Some Insecticides

Crops ◽  
2021 ◽  
Vol 1 (3) ◽  
pp. 166-184
Author(s):  
Finbarr G. Horgan ◽  
Ainara Peñalver-Cruz ◽  
Maria Liberty P. Almazan
Keyword(s):  
Host Resistance ◽  
Management Practices ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Susceptible Variety ◽  
Egg Laying ◽  
Varietal Resistance ◽  
Sogatella Furcifera ◽  
Nilaparvata Lugens Stål ◽  
Whitebacked Planthopper

The brown planthopper, Nilaparvata lugens (Stål)[BPH], is a damaging pest of rice in Asia. Insecticides and rice varietal resistance are widely implemented BPH management practices. However, outbreaks of BPH have been linked to excessive insecticide use—challenging the compatibility of these two management practices. IR62 is a variety with resistance against BPH, the whitebacked planthopper, Sogatella furcifera Horváth [WBPH], and the green leafhopper, Nephotettix virescens (Distant)[GLH]. We compared BPH responses to IR62 and to the susceptible variety IR64 treated with buprofezin, carbofuran, cartap hydrochloride, cypermethrin, deltamethrin, fipronil, or thiamethoxam + chlorantraniliprole. In greenhouse bioassays, cypermethrin, fipronil and thiamethoxam + chlorantraniliprole reduced egg laying on both varieties, and, together with buprofezin, reduced nymph survival to zero. Buprofezin, carbofuran, and cartap hydrochloride stimulated egg laying, and carbofuran increased nymph biomass, but these effects were reduced on IR62. Planthopper populations were ten times higher on deltamethrin-treated rice than untreated rice in a screenhouse experiment. Host resistance failed to buffer against this insecticide-induced resurgence in BPH and WBPH. However, IR62 reduced the effect in GLH. Rice treated with cypermethrin and fipronil had reduced yields compared to untreated controls, suggesting possible phytotoxic effects. We found little evidence of synergies between the two management practices; but host resistance did buffer against the undesirable effects of some insecticides.

The flight capabilities of laboratory and tropical field populations of the brown planthopper, Nilaparvata lugens (Stål) (Hemiptera: Delphacidae)

1980 ◽  
Vol 70 (4) ◽  
pp. 589-600 ◽  
Author(s):  
P. S. Baker ◽  
R. J. Cooter ◽  
P. M. Chang ◽  
H. B. Hashim
Keyword(s):  
Body Weight ◽  
Long Range ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Third Generation ◽  
The Third ◽  
Field Laboratory ◽  
Laboratory Populations ◽  
Range Migration ◽  
Nilaparvata Lugens Stål

AbstractThe duration of flight by Nilaparvata lugens (Stål) of tropical origin from field and laboratory populations was studied. Field insects (from the third generation on rice) flew longer and more readily than laboratorybred insects. The longest recorded flight, of 10·75 h, was by a female from the field. Laboratory-reared insects performed poorly even after only one generation in the laboratory. Flights that were started in the morning lasted longer than those started in the afternoon. Lift production varied between individuals and during a continuous flight. Individuals flying for over 150 min tended to produce more lift for a longer proportion of the flight than those flying for less than 10 min. The pattern of lift production appeared to be similar in successive flights, except in those following very long flights when the insect appeared to be exhausted. There was no tendency for the first flight to be the longest. Up to 28% loss of body weight was recorded (in a flight lasting 512 min) during flight. The results indicate that individuals from tropical field populations of N. lugens have the capacity for long range migration.

scholarly journals PENGARUH INSEKTISIDA TERHADAP KEMAMPUAN ADAPTASI WERENG BATANG COKELAT (Nilaparvata lugens Stal) PADA PADI VARIETAS TAHAN

2020 ◽  
Vol 3 (3) ◽  
pp. 125
Author(s):  
Eko Hari Iswanto
Keyword(s):  
Insecticide Resistance ◽  
First Generation ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Resistant Variety ◽  
Test Results ◽  
Rice Varieties ◽  
Nilaparvata Lugens Stål ◽  
Reaction Result

<p><strong><em>Effect of Insecticide</em></strong><strong><em>s</em></strong><strong><em> to Brown Planthopper (</em></strong><strong>Nilaparvata lugens<em> Stal) Adaptation on Resistant Rice Varieties</em></strong><em>.</em> Brown planthopper (BPH) (Hemiptera: Delpachidae) is one of major pests on rice cultivation in Indonesia. Resistant rice varieties and insecticides are commonly used by farmers in BPH management. But, BPH can rapidly adapt on long-term planted varieties and insecticide. The aim of research was to study the ability of insecticide resistance BPH in adaptation on resistant rice varieties. This study was conducted at Indonesian Center for Rice Research from October 2018 to June 2019. BPH<sup>’</sup>s were collected from farmer field and reared for 6th generation. BPH’s were divided into four insecticide population. BPH population sprayed each generation by BPMC (BPMC-BPH), imidacloprid (imidacloprid-BPH), pymetrozine (pymetrozine-BPH), and unsprayed (Control-BPH). In first generation, insecticide resistance conducted to obtain baseline data of BPH resistance to imidacloprid, BPMC and pymetrozine. On 6<sup>th</sup> generation, insecticide resistance test repeated to each population. Four BPH population were tested for the survival rate, fecundity, amount of honeydew, and  rice varieties reaction. Result showed that Field population 1st generation were  resistance to BPMC and imidacloprid with Resistance Factor (RF) 4.1 and 13.5-fold, respectively, while to pymetrozine was indicate resistance (RF 3.7-fold). In 6th generation, LC<sub>50</sub> all insecticide population were increased, while in Control-BPH were decreased. Inpari 13 still effective againts BPH in all test results. Insecticide resistance-BPH tend to lower adaptation on resistant variety than insecticide susceptible-BPH.</p>

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