摘要
本文研究了温度对二双斑唇瓢虫发育和种群增长的影响,结果表明,二双斑唇瓢虫发育的最适温度为18—23℃,临界最低温度为5℃左右,临界最高温度为38—41℃。在17—31℃温度范围内,以25℃的存活率最高,以31℃的存活率最低。越冬成虫的抗寒性较强,1985年越冬期间的过冷点温度平均为-4.26—-5.6℃。测得在室温下二双斑唇瓢虫的内禀增长率(r)为0.0402,周限增长率(λ)为1.0410,净增殖率(R_o)为89.63,世代平均时间为111.76天。
The present paper deals with effects of temperature on development and growth of Chilocorus bijugus Mulsant population. The results show that the most favourable temperature of development falls in the range of from 18℃ to 23℃. The lowest and highest threshold temperatures are about 5℃ and from 38℃ to 41℃, respectively. The highest and lowest survival rates occur at 25℃ and 31℃, respectively. The supercooling point is measured to be in the range of -4.26℃ through -5.60℃ during the hibernating period. The innate capacity of increase (rm) and the finite rate of increase (λ)are 0.0402 and 1.0410 female offsprings per day in the range of 20 °to 24.5℃, respectively. The net reproduction rate (Ro) is 89.63 and a generation would be completed in 111.76 days.
出处
《生态学报》
CAS
CSCD
北大核心
1991年第3期237-241,共5页
Acta Ecologica Sinica
关键词
二双斑唇瓢虫
温度
实验种群
Chilocorus bijugus Mulsant, developmental rate, innate capacity of increase (rm), supercooling point.
