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为了解绣线菊蚜对苹果不同叶龄叶片初始选择与定居选择的异同,明确成熟叶片与幼嫩叶片对绣线菊蚜生长发育、存活及繁殖的影响,在研究绣线菊蚜对成熟叶片与幼嫩叶片选择性基础上,采用叶盘法饲养观察并组建了绣线菊蚜的年龄-龄期两型生命表.结果表明:绣线菊蚜喜欢在幼嫩叶片上产仔.其近距离降落选择与刺探取食选择存在差异,刺探取食选择是决定绣线菊蚜对同一寄主不同部位选择的关键.绣线菊蚜在成熟叶片上的发育历期显著长于幼嫩叶片,存活率也低于幼嫩叶片,其死亡主要发生在1龄、4龄若蚜及成蚜期.成熟叶片上的无翅蚜比例低于幼嫩叶片,且成蚜寿命、产卵量均显著小于幼嫩叶片.种群动态参数表明,绣线菊蚜在幼嫩叶片上具有很强的增长势能,而在成熟叶片上很难建立种群.
In order to understand the similarities and differences between the selection and settlement of apple aphids on the initial selection and colonization of apple leaves at different leaf ages, the effects of mature leaves and young leaves on the growth, survival and reproduction of Aphis gossypii were studied. Based on the selection of the young leaves, the age-age two types of life tables were also observed and established by the leaf disc method.The results showed that: There was a difference in the choice between landing selection and pricking feeding, and the choice of feeding was the key to decide the selection of different parts of the same host.Aphylla sp. On mature leaves had longer developmental duration than young leaves, and the survival rate Also lower than the young leaves, the death occurred mainly in the 1st and 4th instar nymphs and the aphids stage.The proportion of wingless aphids on the mature leaves was lower than that on the young leaves, and the life span and the fecundity of the aphids were significantly less than those of young Young leaves.The dynamic parameters of the population showed that A. spiraea had a strong growth potential on young leaves and it was very difficult to establish a population on mature leaves.