【摘要】 对美国白蛾越冬代成虫羽化规律及产卵习性进行了研究 ,找出了影响羽化及产卵的关键气候因子。即连续 5d日平均气温达到 1 2℃、RH在 6 8%以上时 ,越冬代成虫开始羽化 ;连续 5～ 6d日平均气温高于 1 6℃时 ,出现羽化高峰 ;当日平均气温低于 1 5 7℃时 ,出现羽化低峰。雄成虫比雌成虫羽化始期早 8d ,羽化末期晚 5d ;雄成虫趋光性和飞翔能力强于雌成虫 ,但存活时间短于雌成虫 ;雌成虫的产卵量受产卵环境影响 ,不交尾的雌成虫产卵量极少更多还原

【Abstract】 A study on Hyphantria Cunea (Drury)overwintering of generation adult emergence and oviposition habits showed the key factors that influenced emergence and oviposition,namely 5 consecutive days,the average temperature of 12 ℃ or more,RH value above 68% If so,the emergence of the adults began 5～6 consecutive days,the average temperature above 16 ℃ would lead to the emergence peak in verus to the emergence ebb at the average day temperature below 15 7 ℃ The male came 8 days earlier than the famale at the initial emergence stage in verus to 5 days later at the last stage,and the flying ability and phototaxis were better,but survival time was shorter The amount of spawned egg was influenced by environment and that of the unmating was scarce更多还原