INFLUENCE OF TEMPERATURE ON THE EXPERIMENTAL POPULATION OF Stethorus punctillum
温度对深点食螨瓢虫实验种群的影响

The growth of each developmental stage and oviposition of adults of Stethorus punctillum were observed under five constant temperatures.From this,we fitted the models for the relationship between developmental rate and temperature,and calculated threshold temperature and effective accumulative temperature for each stage.we established fertility tables of experimental populations of S.punctillum ,and at each temperature computed the intrinsic rate of natural increase,stable age distribution,instantaneous birth rate and instantaneous death rate,etc.