星豹蛛对棉蚜的捕食功能研究

Predational function of Pardosa astrigera on Aphis gossypii

研究了星豹蛛成蛛对棉蚜的捕食功能反应.结果表明:星豹蛛对棉蚜的捕食功能符合HollingⅡ模型,拟合方程为Na=1.033 8Nt/(1+1.033 8×0.009 4Nt);星豹蛛个体间相互干扰对捕食效应的影响可以用E=0.928 2P-0.256 1进行模拟;星豹蛛对自身密度的功能反应可以用A=65.53P-0.864 1进行模拟,且拟合结果均较为理想.

The functional response of Pardosa astrigerain preying upon Aphis gossypii was studied. The results showed that the function response of adult Pardosa astrigera to Aphis gossypii was fit for Holling Ⅱ model, Na=1.0338 Nt/（1＋1.033 8×0.0094 Nt ）. The relationship between predation efficiency and individual interference could be simulated by the Hassell and Varley model, E= 0.928 2 p^-0.2561. The functional response of adult to the density of itself could be simulated by the watt model, A=65.53 p^-0.8641.