摘要
异色瓢虫在临夏地区1年发生4代,幼虫共4龄,越冬成虫4月上旬始见,成虫交尾时长为80~160min,交尾后3~5 d开始产卵,在(20±2)℃的室温下饲喂表明:越冬雌虫产卵量(133.40±33.78)粒/头,孵化率98.91%±1.49%;第1代发育历期:卵期(3.03±0.04)d,1龄幼虫(2.06±0.94)d,2龄幼虫(3.27±0.78)d,3龄幼虫(1.82±0.84)d,4龄幼虫(6.50±7.10)d,蛹期(6.80±0.84)d,成虫平均寿命为(19.67±10.34)d,全世代历期43.15 d。10月下旬以成虫越冬。
Harrnonia axyridis had four generation a year in Linxia, the larvae had 4 instars, winter adults appeared in early April, the adults mating lasted 80-160 minutes copulation after 3-5 days and began to lay eggs, when they were fed under the room temperature of (20 ± 2)℃. It showed that fecundity of overwintering female was (133.40 ± 33.78) eggs/times, the hatching rate was 98.19% ± 1.49%, the first generation development duration: egg stage was (3.03 ±0.04) days, a larvae (2.06 ± 0.94) days, 2 larvae (3.27 ± 0.78) days, 3 larvae (1.82 ±0.84) days, 4 larvae (6.50 ±7.10) days, pupal stage was (6.80 ±0.84) days, average life was(19.67± 10.34) days, the entire generation lasted 43.15 days. It overwintered as adult in late October.
出处
《甘肃林业科技》
2010年第1期71-73,共3页
Journal of Gansu Forestry Science and Technology
基金
甘肃省临夏州科技计划项目(编号:2006-L-3-08)
关键词
异色瓢虫
生物学特性
临夏
Harmonia axyridis
biological characteristics
Linxia