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《Journal of Plant Protection》 2015-05
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Bioactivity of lansiumamide B against Panonychus citri

Feng Xiujie;Zhang Guobin;Zhou Xingyang;Deng Songqing;Wan Shuqing;Key Laboratory of Natural Pesticide and Chemical Biology,Ministry of Education;South China Agricultural University;  
To explore the bioactivity of lansiumamide B against Panonychus citri,the dip-slide,leaf residue and leaf disc methods were applied to study the contact,repellent and ovicidal activities of lansiumamide B,respectively. The results showed that lansiumamide B at the concentration range of 10-500 μg / m L showed higher contact toxicity against female adults of P. citri. The LC50 and LC90values of lansiumamide B against the adults were 62. 92 μg / m L and 346. 02 μg / m L after 24 h treatment,respectively,and the toxicity of lansiumamide B were 3. 7 and 5. 4 times that of rotenone,3. 2 and 8. 1times that of azadirachtin, respectively. It also showed better ovicidal activity than rotenone and azadirachtin with a killing rate of 42. 9% on eggs at the concentration of 100 μg / m L. The repellent rate of lansiumamide B against the female adults were both over 80. 0% after 24 h treatment at 100 μg / m L and 500 μg / m L,which was equal to those of rotenone and azadirachtin. Lansiumamide B may be used as a lead compound of acaricidal activity for its excellent contact toxicity and repellency.
【Fund】: 广州市科技计划(2010Y1-(27))
【CateGory Index】: S433.7
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