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瓢虫成虫饥饿24h后,通过室内对菱斑巧瓢虫Oenopia conglobata (Linnaeus)成虫饲喂24种人工饲料,研究菱斑巧瓢虫的取食行为;以桃蚜(MP)作对照,选择羊肝+蔗糖(SLS)、猪肝+蔗糖(PLS)、黄粉虫蛹+蔗糖(TMPS)3种饲料研究瓢虫产卵量;以白蛾周氏啮小蜂蛹(CCP)、SLS、PLS和MP对瓢虫成虫进行交叉饲喂试验,每周期7d,研究饥饿后恢复产卵时间和产卵量的差异;最后以CCP和MP饲喂瓢虫幼虫,观察其发育历期。结果表明:在羊肝、鸡心、菜蛾幼虫、鸡肝和黄粉虫蛹组中,无论是否添加蔗糖,瓢虫取食情况较好。瓢虫成虫饲喂SLS、TMPS、PLS及MP后,MP组的14d单雌产卵量为166.25粒、SLS组为18.15粒、PLS为9.65粒和TMPS组3.90粒,瓢虫恢复产卵的时间也有差异,MP组仅需要1d,而其它组需要3d至至5d。交叉饲喂试验发现,CCP组产卵量(40.67～46.87粒/雌)明显高于常用饲料-PLS组(4.53～7.13粒/雌),但与MP组(61.80～82.07粒/雌)仍有一定差距。利用CCP饲喂瓢虫幼虫,可以完成整个发育历期,但是存活率较低,1～4龄幼虫各龄期内存活率在63.64%～87.50%之间,并且发育历期(21.23d)明显长于饲喂MP组(15.71d)。
After the adult ladybugs were starved for 24 hours, 24 kinds of artificial diets were fed on the adults of the genus Oenopia conglobata (Linnaeus) to study the feeding behavior of the ladybugs. The peach aphids (MP) SLP, PLS and TMPS were used to study the fecundity of ladybugs. The results showed that: MP cross-feeding ladybug adult test, each cycle 7d, to study the difference between the time to restore ovipositing and ovipositing; Finally, CCP and MP were fed larvae of ladybugs to observe the developmental period. The results showed that in the pupa group of goat liver, chicken heart, diamondback moth larvae, chicken liver and Tenebrio molitor, ladybird feeding was better with or without sucrose addition. After ladybugs fed SLS, TMPS, PLS and MP, the fecundity of females in group MP was 166.25 at 14 days, 18.15 in SLS group, 9.65 in PLS group and 3.90 in TMPS group. There are also differences, MP group only needs 1d, while other groups need 3d to 5d. Cross-feeding test found that CCP group’s fecundity (40.67 ~ 46.87 grains / female) was significantly higher than that of the common feed-PLS group (4.53 ~ 7.13 grains / females) A certain gap. The feeding of ladybug larvae by CCP could complete the whole developmental period, but the survival rate was lower. The survival rates of the 1st to 4th instar larvae ranged from 63.64% to 87.50%, and the developmental duration (21.23 days) was significantly Longer than fed MP group (15.71d).