斐豹蛱蝶的生物学特性及防治初步研究

研究了上海地区斐豹蛱蝶的生物学特性及发生规律,结果表明:该虫1年发生3代,以蛹越冬,1龄~5龄幼虫头壳分别为0.46±0.05、0.76±0.07、1.14±0.11、1.52±0.12和2.16±0.09 mm;1龄~5龄幼虫历期分别为4.88±1.46、34.13±0.83、3.38±1.06、3.13±0.83和4.12±0.75 d。幼虫期总食叶量为6 032.68 mm2,雌雄成虫寿命分别为5.14±0.69d、3.82±0.83 d,。雌雄性比1∶1.23。在室外喷雾3 000倍2.5%高效氯氟氰菊脂、5 000倍20%除虫脲、3 000倍2.5%功夫菊脂和2 000倍1.8%阿维菌素7 d后校正死亡率分别为92.55%,90.98%,82.60%,80.85%。

A Preliminary Study on the Biological Characteristics and Control of Argyreus hyperbius in Shanghai

The biological characteristics and occurrence of Argyreus hyperbius in Shanghai were investigated.The results showed that it occurred for 3 generations annually and overwintered as pupa. The head capsule width of the larva at the 1st to 5th instar stages was 0. 46 ± 0. 05,0. 76 ± 0. 07,1. 14 ± 0. 11,1. 52 ± 0. 12 and 2. 16 ± 0. 09 mm,respectively. The corresponding development period of the larva was 4. 88 ± 1. 46,34. 13 ± 0. 83,3. 38 ± 1. 06,3. 13 ± 0. 83 and 4. 12 ± 0. 75 d,respectively. The total amount of leaves eaten by a larva was 6 032. 68 mm2 in leaf area. The life span of female and male adults were 5. 14 ± 0. 69 d and3. 82 ± 0. 83 d respectively. The sex ratio of female to male was 1∶ 1. 23. The field tests showed that the corrected mortality of the larvae was 92. 55%,90. 98%,82. 60% and 80. 85% at 7 days after spraying 3 000-fold dilution of 2. 5% Lambda-cyhalothrin,5 000-fold dilution of 20% Diflubenzuron,3 000-fold dilution of 2. 5% Bcnzoy lphenyl,and 2 000-fold dilution of 1. 8% Abamectin.