《环境昆虫学报》

在实验室条件下研究了三叶蔓荆Vitex trifolia L叶片提取物对甘蓝蚜Brevicoryne brassicae L的拒食、对菜粉蝶Pieris rapae L幼虫的生长发育抑制以及对家蝇Musca domestica的毒杀活性。试验结果表明：10 mg/mL的乙酸乙酯提取物在24 h和48 h对蚜虫的拒食率分别为8889％和8636％，拒食效果明显。几种溶剂提取物对5龄菜粉蝶幼虫的生长发育均有不同程度的影响，其中乙酸乙酯提取物的体重增长抑制率第1天达7535%。各溶剂提取物在高浓度下对家蝇2龄幼虫均有一定的毒杀作用，低浓度下效果较差。乙酸乙酯提取物48 h的LC50为2278 mg/mL，远高于拒食和生长发育抑制试验设定的浓度。结果表明乙酸乙酯提取物拒食活性和生长发育抑制活性显著。

英文摘要:

Antifeeding, inhibiting and contact activity of extracts from V trifolia leaves against Brevicoryne brassicae, Pieris rapae and Musca domestica were examined under laboratory conditions 10 mg/mL ethyl acetate extracts had bioactivity against B brassicae with antifeeding rate of 8889% and 8636% after 24 hours and 48 hours, which was conspicuous than other three extracts Four extracts had inhibiting effect against the fifth instar larvae of P rapae The activity of the ethyl acetate extract was significantly higher than that of other extracts with weight gain inhibitory rate of 7535% after 1 day Four extracts had insecticidal effect against the 2nd instar larvae of M domestica at high concentration After 48 hours, the LC50 of ethyl acetate extracts were 2278 mg/mL The results suggested that the ethyl acetate extracts of V trifolia leaves had high antifeeding and inhibiting activity to be studied in the future.

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