论文部分内容阅读
对我国多数稻区共享的优势种蜘蛛食虫沟瘤蛛进行饥饿耐受性测定,结果显示食虫沟瘤蛛的耐饥时间以及组内个体耐饥力的变异幅度与温度高低呈负相关。在35、25℃和15℃3种试验温度下,食虫沟瘤蛛的耐饥时间及变异幅度均与龄期呈正相关;在5℃时,耐饥时间极大延长,组内变异系幅度亦急剧增大,但此时耐饥时间和变异幅度均与龄期呈负相关。在高温35℃和低温5℃下,3个龄期组的耐饥时间差异不显著(p>0.05);但在适宜温度25℃和15℃时,3个龄期组之间的耐饥时间差异显著(p<0.05)。同一龄期组的食虫沟瘤蛛在任意两种不同的温度条件下,其耐饥时间的差异性均达到极显著水平(p<0.01)。4种试验温度条件下,处于饥饿状态的食虫沟瘤蛛各龄期组的阶段死亡率均具有正态分布特点,可用正态分布模型M=1σ2π.e-(T2-σ2μ)2进行拟合;并可根据正态分布的特点得出食虫沟瘤蛛的饥饿半致死时间(T50)和致死时间(T95)。
The hunger tolerance test of the dominant species of spider moths, Taraxacum spider, shared by most rice areas in China showed that the variation of resistance to hunger and the hunger resistance of individuals in the group were negatively correlated with the temperature. At 35 ℃, 25 ℃ and 15 ℃, the hunger resistance and variation range of the insects were positively correlated with the age. At 5 ℃, the resistance to hunger was greatly prolonged, and the variation range Also increased sharply, but the time of hunger and the magnitude of variation were negatively correlated with the age. At 35 ℃ and 5 ℃, there was no significant difference in the hunger resistance among the three age groups (p> 0.05). However, when the optimum temperature was 25 ℃ and 15 ℃, the hunger resistance of the three age groups Significant difference (p <0.05). In the same age group, the difference between the two groups was significant (p <0.01). Under the four experimental temperature conditions, the stage mortality of all stages of the hungry insects had a normal distribution, which could be simulated by the normal distribution model M = 1σ2π.e- (T2-σ2μ) 2 And can be based on the characteristics of the normal distribution of insectivorous carnivore cranes hunger half-lethal time (T50) and lethal time (T95).