5种杀虫剂对冬樱花云南锦斑蛾的毒力测定

Toxicity Test of 5 Insecticides against Achelura yunnanensis

云南锦斑蛾是冬樱花上的新记录害虫。2013-2015年对其生活史进行观察,并选用5种药剂,采用浸叶法对云南锦斑蛾进行室内的毒力测定。结果表明,云南锦斑蛾在昆明市1年发生1代,以老熟幼虫在树下常绿植物或枯枝落叶中结茧越冬。5种杀虫剂对云南锦斑蛾6龄幼虫的毒力(LC50值)大小顺序为三氟氯氰>溴氰菊酯>阿维菌素>吡虫啉>毒死蜱。因此三氟氯氰、溴氰菊酯、阿维菌素对云南锦斑蛾毒力较高,吡虫啉和毒死蜱毒力较低。

A new record insect of Cerasus cerasoide is Achelura yunnanensis. The life histories of Achelura yunnanensis were observed from 2013 to 2015, and its toxicity was tested by leaf dipping method which used 5 reagents. The results showed that Achelura yunnanensis reproduce one time in a year in Kunming City. It＇ s mature larvae makes cocoon in evergreen trees or litter during winter. The toxicity order of 5 insecticides （LC50） for 6th instar larvae is three fluorine cyanogen chloride 〉 deltamethrin 〉 abamectin 〉 imidacloprid 〉 chlorpyrifos. Therefore, the three fluorine chlorine cyanide, dehamethrin and abamectin were highly toxic to Achelura yunnanensiz, while imidacloprid and chlorpyrifos have low toxicity.