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在13℃、18℃、23℃、28℃及33℃五个温度下,对大豆蚜取食大豆、野大豆、白三叶和萝藦后的12个形态参数及体型大小,进行了测定和比较分析。研究表明:(1)温度对大豆蚜的体长、体宽、头宽、触角长、前足腿节长、前足胫节长、中足腿节长、中足胫节长、后足腿节长、后足胫节长、腹管长及尾片长,存在极显著影响;寄主植物对中足腿节长以外的11个形态参数存在显著影响;温度与寄主植物的交互作用,对腹管长度以外的11个形态参数存在极显著影响;(2)温度、寄主植物及二者的交互作用,对大豆蚜的体型均存在极显著影响;(3)在单一温度处理下,大豆蚜取食不同寄主植物后的形态参数呈现一定的规律性变化;(4)在单一温度或寄主植物处理下,蚜虫体型也均呈现出规律性变化。
Twelve morphological parameters and body size of soybean aphid fed soybean, soybean, white clover and radish were determined at 13 ℃, 18 ℃, 23 ℃, 28 ℃ and 33 ℃ comparative analysis. The results showed that: (1) The temperature had the same effect on soybean aphid body length, body width, head width, antenna length, forefoot length, forefoot tibia length, midfoot length, midfoot width, hind leg length , The hind tibia length, the length of the abdominal tube and the length of the tail piece had a very significant effect. The host plants had significant influence on the 11 morphological parameters except for the length of the midfoot leg. The interaction between temperature and the host plant, (2) Temperature, host plant and the interaction between the two had a very significant effect on the body size of soybean aphid; (3) Under the single temperature treatment, soybean aphid feeding different The morphological parameters of the host plants showed some regular changes. (4) The body size of the aphids also showed a regular change under single temperature or host plant treatment.