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目的探索吴氏白蛉在人工条件下的越冬情况。方法 A组:幼虫在温度10～18℃和相对湿度30%～45%的饲养皿中越冬;B组:幼虫在温度1～13℃和湿度45%～70%的饲养皿中越冬;C组:幼虫在温度1～13℃和湿度45%～70%的产卵罐中越冬。结果化蛹率从高到低依次为C组、B组和A组,平均为52.6%。A组、B组和C组的羽化率分别为15.1%、64.3%和70.6%,总成虫转化率分别为7.2%、32.7%和41.7%,有效积温分别为3000、2975和2960日℃;在越冬幼虫化蛹和羽化集中程度方面,A组最分散,B组和C组羽化时间明显集中。结论环境温度对白蛉越冬有重要影响,吴氏白蛉越冬需要2978日℃的有效积温,越冬温度高时,滞育期缩短,成虫提前羽化和出洞活动,影响白蛉交配和吸血;平均温度<11℃,滞育时间超过9个月时,才能确保成虫交配和吸血的顺利完成。湿度是影响吴氏白蛉越冬的重要因素,越冬时湿度<75%常能导致白蛉幼虫死亡。
Objective To explore the wintering conditions of white catfish Wu under artificial conditions. Methods Group A: larvae overwintered in a feeding dish at a temperature of 10-18 ° C and a relative humidity of 30-45%; Group B: larvae overwintered in a feeding dish at a temperature of 1-130 ° C and a humidity of 45-70%; Group C : Larvae wintering in temperature of 1-13 ℃ and 45% ~ 70% of oviposition tanks. Results The pupation rate from high to low was C group, B group and A group with an average of 52.6%. The emergence rates of A, B and C were 15.1%, 64.3% and 70.6% respectively. The total adult transformation rates were 7.2%, 32.7% and 41.7%, respectively. The effective accumulated temperatures were 3000, 2975 and 2960 ℃, respectively. Overwintering larvae pupation and eclosion concentrations, the most dispersed group A, B and C group of feather time was significantly concentrated. Conclusion The ambient temperature has an important influence on the wintering of white catfish. Wintering of white catfish requires effective accumulated temperature of 2978 ℃ for overwintering. When the winter temperature is high, the diapause period is shortened, and the emergence and emergence of adults prematurely affect the mating and vampire absorption of white catfish. The average temperature <11 ℃, diapause time more than 9 months, to ensure the successful mating and vampire adult. Humidity is an important factor that affects Wintering wintering wintering. When overwintering, humidity <75% can often lead to death of buckthorn.