摘要
本文报道桃蚜(Myzus persicae)萝卜蚜(Lipaphis erysimi)在一系列恒温、变温下的发育速率,结果表明:(1)恒温下发育速率与温度关系遵循有下上限的logistic曲线;(2)除了在恒温下随温度升高死亡率急剧增加、发育速率迅速下降的高温区(桃蚜:>28℃,萝卜蚜:>30℃)外,温度波动不改变发育速率与温度的函数关系;(3)变温下,在上述高温区内的发育速率仍基本按经典的logistic曲线随温度升高而上升,但在一温度下的发育速度又随停留时间延长而逐渐下降;在恒温下只能完成部分虫期发育的低温区,变温下发育速率亦接近经典的logistic曲线。文中根据上述结果提出了一个昆虫发育率在恒温和变温下变化规律的初步模型,并发现文献中有大量的基本符合这一模型例证的。
The development rates of Myzus persicae and Lipaphis erysimi were determined under a series of constant, alternating and natural temperature regimes. The results showed that ( 1 ) the relationships between temperature and development rater under constant conditions follow a logistic curve with lower and upper boundary; (2) except at high temperature range (for Mpersicae. >28℃, for L.e-rysimi, >30℃) where under constant conditions mortality increasesed and development rate decreased rapidly, temperature fluctuations did rot change the functional relations between temperature and rate of developmeat? (3) under fluctuating temperatures, the development rates within the high temperature range defined above still increased with temperature following the simple logistic curve, but the rate at a given temperature declined with time; at low temperatures where under constant conditions only partial development was possible, the rates under fluctuating temperatures also followed the simple logistic curve . Based on the results, a preliminary model has been formulated depicting the change pattern of development rates of insects under constant and variable temperatures , and a survey of the relevant literature demonstrates that the change pattern of development rates in most of the examples examined conforms to the model proposed.
出处
《生态学报》
CAS
CSCD
北大核心
1989年第2期182-190,共9页
Acta Ecologica Sinica
关键词
蚜虫
发育速度
温度
Myzus persicae, Lipaphis erysimi, development rate, temperatures, change pattern.
