@article {6024,
	title = {Life table of the laboratory population of Hypera postica (Gyllenhal) at different temperatures},
	journal = {Caodi Xuebao},
	volume = {18},
	number = {5},
	year = {2010},
	month = {Sep 18},
	pages = {726-730},
	abstract = {Life tables of laboratory population of Hypera postica were constructed at 18, 22, 26 and 30[degree]C, respectively. Results show that development increase as temperature increases from 18[degree]C to 30[degree]C, and meet logistic models. The developmental temperature threshold for egg, larva, prepupa, pupa and preoviposition stages of adults is 8. 82,10. 47, 8. 60, 11. 91, 9. 53[degree]C, respectively. The effective accumulated temperature for egg, larva, prepupa, pupa and preoviposition stages of adults is 99. 38, 143. 80, 48. 63, 55. 71, 140. 15[degree]C per day, respectively. The effective accumulated temperature of the entire generation is 480. 96[degree]C per day. Survival curves followed the {\textquoteright}Price A{\textquoteright} pattern for these studies. Both generation survival rates (47. 6\%) and number of nymphs produced by one female (847. 7 eggs) reached the highest at 26[degree]C. Either generation survival rate (S) or population trend index (I) may be described as a function of temperature (t) in parabola curves, The optimal temperature range for growth and development of Hypera postica was between 25 and 27[degree]C.},
	keywords = {Hypera postica},
	isbn = {1007-0435},
	author = {Zhang, Na and Zhao, Li and Chai, Yan-jun}
}
@article {6023,
	title = {Primary research on wing dimorphism of alfalfa weevil Hypera postica (Gyllenhal)},
	journal = {Xinjiang Nongye Kexue},
	volume = {47},
	number = {5},
	year = {2010},
	month = {May},
	pages = {910-914},
	abstract = {( Objective ) To explore the effect of the factors such as heredity and environment on wing dimorphism of alfalfa weevil and then provide theoretic basis to forecast its occurrence . ( Method ) Larvae were reared until becoming pupae under conditions that included different parental combinations, temperatures, larva densities and host quality statistic analysis on wing dimorphism differentiation was conducted. ( Result) The results showed that: there are significant difference in wing morph differentiation of Ft progeny pupae obtained from different parental combinations, especially in the combination when both parents were normal [long dash] wing (N x N cross) vestigial [long dash] wing pupae of Ft progeny can be as high as 94.1\% ; the effect of temperature and density were also significant : the differentitation ratio of normal [long dash] wing pupae increased and vestigial [long dash] wing pupae decreased with the increasing of temperature and density; quality of hosts brought significant difference, the ratio of normal [long dash] wing pupae in the treatment of alfalfa stem were obviously high than the treatment of alfalfa leaf . ( Conclusion ) Thus, the differentiation of wing morph of alfalfa weevil were controlled by many factors.},
	keywords = {Hypera postica},
	isbn = {1001-4330},
	author = {Zhang, Na and Zhao, Li and Zhang, Ting}
}
