Acta Entomologica Sinica (1997) 40, S149-S152

Hongxia Hua and Wangxi Deng (1997)
[A comparative study on biological characteristics of different geographic populations of brown planthoppers Nilaparvata lugens (Stal)]
Acta Entomologica Sinica 40 (Supp.), S149-S152
Abstract: A comparative study on development, survival, fecundity and innate capacity for population increase of the four geographic populations of brown planthoppers (BHP) (Nilaparvata lugens) was carried out in the laboratory. The four populations were collected from Longzhou, Jiugongshan, Jianli, Xinhui in China. The results show: 1. After a long-distance migration, the Jiugongshan immigrant adult females need to be fed for 3.6 days to begin oviposition. Egg number laid per female is only 522, lower than that in the second generation (714). 2. In the second generation, there is significant difference in the duration of the first and fifth instar nymphs among populations, but no significant difference in the second, third, fouth instar that are key stages determining wing dimorphism, and no significant difference in longevity and oviposition period of adult females too. Egg number of Xinhui population is remarkably higher than those of the other three. At the same instar nymphs the generation specific survival rate of the Jiugongshan population is lower than those of the other three. The innate capacity for population increase which can comprehensively reflect the information of development, survival and fecundity changes slightly between 0.1874 to 0.1982. Furthermore, the reasons for the homogenieties and the heterogeneities above-mentioned are discussed.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Nilaparvata lugens		China (south)