不同光周期对绿盲蝽实验种群生命表参数的影响

 为探明光周期对绿盲蝽种群增殖的影响，应用种群生命表的方法（温度（25±1）℃、相对湿度（70±5）%、光照强度4000 lx），系统研究了绿盲蝽(Apolygus lucorum Meyer-Dür )在5个光周期L︰D=8︰16，10∶14，12︰12， 14︰10和16︰8下的实验种群的生长发育特性和繁殖能力。结果表明，不同光周期处理下绿盲蝽各虫态存活率、产卵前期及产卵量等均有显著性差异。不同光周期处理下，绿盲蝽最高孵化率（L︰D=10︰14）比最低孵化率（L︰D=16︰8）高25.06个百分点；若虫最高存活率（L︰D=8︰16）比最低存活率（L︰D=16︰8）高25.26个百分点；雌成虫最高平均产卵量（L︰D=12︰12）比最低平均产卵量（L︰D=8︰16）多27.29粒。综合来看，光周期L︰D=12︰12处理下的绿盲蝽种群内禀增长率(rm)最大（0.1093），种群加倍时间（DT）最短（6.3417），表明该光周期处理十分有利于绿盲蝽种群的发育与繁殖。

Effects of Different Photoperiods on the Life Table Parameters of Apolygus lucorum Meyer-Dür(Hemiptera:Miridae)

The effects of different photoperiods(L︰D=8︰16, 10︰14, 12︰12, 14︰10, 16︰8) on the characteristic of development and fecundity of Apolygus lucorum Meyer-Dür were studied using life table methods. Apolygus lucorum Meyer-Dür  was reared in climate incubator with temperature(25±1)℃, relative humidity(70±5)℃ and illumination intensity 4000 lx. The survival rates of each stadium, preoviposition duration and fecundity of female adults were significantly different among the five photoperiods. The maximum hatching rate(L︰D=10︰14) was 25.06% higher than the minimum(L︰D=16︰8); the highest nymph survival rate（L︰D=8︰16）was 25.26% higher than the lowest（L︰D=16︰8）; the maximum average fecundity（L︰D=12︰12）of female adults was 27.29 more than the minimum（L︰D=8︰16）. In the photoperiod L︰D=12︰12, the intrinsic rates of natural increase(r_m) was the largest（0.1093）while the double time(DT ) was the shortest (6.3417), which indicated that the photoperiod L︰D=12︰12 was very beneficial to development and fecundity of Apolygus lucorum.