Changes in searching responses with temperature of Cyrtorhinus lividipennis Reuter (Hemiptera: Miridae) on the eggs of the brown planthopper, Nilaparvata lugens (Stal.) (Homoptera: Delphacidae).

摘要

The functional response of Cyrtorhinus lividipennis attacking Nilaparvata lugens eggs on rice was determined at six constant temperatures: 20, 23, 26, 29, 32 and 35鳦, in the laboratory at LD 12:12 and 70% RH. Rogers' (1972) random predator equations were fitted to the data for each temperature separately. The equation model adequately described a Holling's Type II functional response for C. lividipennis and produced biologically realistic estimates of attack rates and handling times at five experimental temperatures between 20 and 32鳦. However, at 35鳦, a negative handling time (Th= -0.0029) was produced. The effect of temperature was incorporated into Rogers' equation by making the attack rate (a) and handling time (Th) functions of temperaturewithin the range 20 to 32鳦. The attack rate and handling time were fitted as hyperbola and reciprocal hyperbola functions of temperature respectively. The temperature incorporating four-parameter composite model fitted the combined data as well as didseparate Rogers' equations based on the parameter estimates.