利用野生空心莲子草繁殖空心莲子草叶甲

Rearing Agasicles hygrophila (Coleoptera: Chrysomelidae) on Alligatorweed, Alternanthera philoxeroides

割草养虫，室内大量繁殖空心莲子草叶甲，找出了饲养中卵、蛹腐烂，成虫和幼虫营养不良而死亡的原因和解决办法．生长发育嫩细、割下的节数短于８节的空心莲子草容易枯黄和腐烂；生长粗壮、龄期长或割下的茎秆节数大于８节的空心莲子草，不容易枯黄和腐烂．成虫产卵至幼虫孵化和老龄幼虫化蛹至成虫羽化．这两个虫期需要８节以上粗壮茎秆，而且需要水培，水培密度以每钵１０株为宜，供幼虫取食的植株更换时间短，植株要求不严格．水培植株不需要生根剂．介绍了利用野生空心莲子草大量繁殖空心莲子草叶甲的技术和方法．

The alligatorweed leaf beetle, Agasicles hygrophila, has being introduced to Fujian, China, as a biological angent to control the alligatorweed, Alternanthera philoxeroides since 1989. The methods of mass rearing of A.hygrophila by host plants cut from wild was studied. It shows that over 8 segments of plant can grow well for adults to lay eggs on and for matured larvae to pupate. Tender plants can be used for rearing larva. The water planting density is 10 tills per cup. Other cultural measurements are discripted.