两种豆科作物田捕食性瓢虫群落研究

利用生物多样性研究方法, 对通辽市科尔沁区两种豆科作物田开花期捕食性瓢虫群落进行研究。结果表明: 两种捕食性瓢虫群落的物种组成和发生个体数量上存在差异, 具体为大豆田分布捕食性瓢虫8属10种, 以异色瓢虫Harmonia axyridis (Pallas)数量最多(122头); 苜蓿田分布5属8种, 以多异瓢虫Hippodamia variegata (Goeze)数量最多(68头)。两个捕食性瓢虫群落相似性较高, 差异性较大的捕食性瓢虫物种其个体数量均明显多于其它物种。色斑型研究显示异色瓢虫具27种变型, 多异瓢虫有8种, 龟纹瓢虫Propylea japonica (Thunberg) 有6种变型; 且大豆田捕食性瓢虫色斑变型(共35种)明显多于苜蓿田(共16种)。

A study on the predatory ladybug community in two legume crop fields

The predatory ladybug communities in the flowering stage of two legume crop fields in Horqin district of Tongliao City were studied by using the method of biodiversity.The results showed that there were differences in the species composition and individual numbers between two predatory ladybugs communities.There were 8 genera and 10 species of predatory ladybugs in soybean field,and Harmonia axyridis(Pallas)had the largest number(122 heads).There were 5 genera 8 species in alfalfa field,and the number of Hippodamia variegata(Goeze)was the most(68 heads).The two predatory ladybug communities had high similarity.The individual numbers of predatory ladybug species with large differences were significantly higher than those of other species.The study showed that there were 27 varieties of Harmonia axyridis(Pallas),8 varieties of Hippodamia variegata(Goeze),and 6 varieties of Propylea japonica(Thunberg).The number of predatory ladybugs in soybean field(35 species)was significantly higher than that in alfalfa field(16 species).