Genetic linkage maps of f . chinensis have been constructed using " two - way pseudo - testcross " strategy with aflp markers . parents and fl progeny ( full sib family ) was used as segregating population . together 135 and 118 markers fitted to mendelian segregation ration for paternal and maternal parent was produced from 34 aflp primer combinations 利用aflp分子标记结合拟测交策略，以中国对虾的单对杂交亲本及其f1代为作图群体，应用mapmakerexp / 3 . 0软件，构建了中国对虾雌、雄的中等密度的遗传连锁图谱。
The relationship among searching efficiency ( e ) , the prey density ( n ) and the adult ladybird density ( p ) was simulated as e = 0 . 3 1 10 / ( 0 . 7842 + 0 . 000404 n + 0 . 21 58 p ) by beddington ' s model e = at / [ 1 + athn + btw ( p - 1 ) ] , i . e . the searching efficiency declined when the adult ladybird and the prey densities increased . in the single predator - two preys system , the selective predation of the adult female beetle to both eggs of b . tabaci and t . nr . fijiensis was discussed when two preys coexisted 当两种猎物共存时，在不同总猎物密度下，测定了捕食者对各猎物的喜好性和转换行为，分析了两种猎物共存时，小黑瓢虫雌成虫对各猎物的功能反应形式，结果表明:当两种猎物共存时，小黑瓢虫雌成虫对烟粉虱卵在低密度下不表现喜好性，而在中等密度和高密度下表现正喜好性，对红蜘蛛卵在各密度下均不表现喜好性;对烟粉虱卵的转换效应会由于总猎物密度的不同而呈现不同的效应，而对红蜘蛛卵则在各总猎物密度下均呈现负转换效应。
