榆紫叶甲赤眼蜂寄生功能反应对梯度恒温的响应

摘要

在14、18、22、26、30℃5个温度下，测定了榆紫叶甲赤眼蜂（ Asynacta ambrostomae）对榆紫叶甲（ Am-brots oma quadri mopressum）卵的寄生功能反应。结果表明：试验温度条件下，榆紫叶甲赤眼蜂的寄生能力随着温度的升高而增加；各温度的功能反应数据均能用Holling－Ⅱ圆盘方程很好地拟合；瞬时攻击率及理论最大寄生率均随温度的升高而增大，理论最大寄生量14℃为55．88粒，30℃时达到117．48粒。%We studied the functional response of Asynacta ambrostomae to the eggs of Ambrostoma quadriimopressum at 14℃, 18℃, 22℃, 26℃and 30℃, respectively.The parasitic ability of Asynacta ambrostomae enhanced with the increasing of temperature, and the functional response fitted well by Holling-II equation at 14℃-30℃.The rates of the successful at-tack and the maximum parasitic rose with the increase of temperature, and the maximum parasitic number were 55.88 and 117.48 at 14℃and 30℃, respectively.