论文部分内容阅读
研究了不同恒温条件对美洲斑潜蝇各虫态发育及成虫取食、产卵、寿命的影响。采用直接最优法推算出卵、幼虫、蛹和整个历期的发育起点温度分别为9.47、10.81、10.96和10.74℃,有效积温为39.20、65.97、136.40和241.07日度。北京全年可发生8～9代。26.5℃下成虫取食量、产卵量、产卵与取食的比率最高,产卵前期最短,产卵、取食高峰期持续时间长。低温和高温均不利于产卵。雌虫一生平均最高卵量为518.2粒,产卵量与温度之间的关系可用回归式Y=44.610X-703.34(R~2=0.6717)表示,产卵的理论最低阈值为15.77℃。每日累积产卵百分比与累积日度之间的关系可用Y=110.1[1-exp(-0.004339X)](R~2=0.9143)表示。
The effects of different isothermal conditions on the development of the insect and the feeding, oviposition and longevity of adults were studied. The direct optimal method was used to estimate the developmental starting temperature of eggs, larvae, pupae and the whole period were 9.47,10.81,10.96 and 10.74 ℃, effective accumulated temperature was 39.20,65.97,136.40 and 241.07 day. Beijing can occur throughout the year 8 to 9 generations. At 26.5 ℃, the amount of adult feeding, the number of spawning, the highest rate of spawning and feeding, the shortest pre-spawning period, the spawning period and the peak period of feeding. Low temperature and high temperature are not conducive to spawning. The average maximum egg length of female was 518.2, and the relationship between fecundity and temperature was expressed by the regression equation Y = 44.610X-703.34 (R ~ 2 = 0.6717). The theoretical minimum threshold for spawning was 15.77 ℃. The relationship between the percentage of cumulative days of laying eggs and the cumulative day can be expressed as Y = 110.1 [1-exp (-0.004339X)] (R ~ 2 = 0.9143).