舞毒蛾核型多角体病毒3个地理品系的毒力比较  

Virulence comparison among three geographic strains of LdNPV

作　　者：朱丽春[1] 段立清[1] 特木钦 宋钢 

机构地区：[1]内蒙古农业大学农学院,内蒙古呼和浩特010019 [2]内蒙古自治区病虫害防治检疫站,内蒙古呼和浩特010018

出　　处：《中国森林病虫》2008年第5期4-6,共3页Forest Pest and Disease

摘　　要：采用室内食料给毒法测定了舞毒蛾核型多角体病毒3个地理品系LdNPV-D（北美品系）、Ld-NPV-H（中国黑龙江品系）和LdNPV-J（日本品系）对取食落叶松Larix principis-rupprechtii的舞毒蛾Lymantria dispar2龄幼虫的致死中量及致死中时间。结果表明,致死中量依次为24（14-38）,30（16-67）,4 472（1 149-79 335）OBs/μL。3个地理品系的致死中时间依次是9.6（8.6-11.9）,20.6（17.6-28.5）,20.2（17.7-25.5）d。LdNPV-D对舞毒蛾2龄幼虫的致死中量低,致死中时间短,毒力最高;日本品系LdNPV-J的毒力最低。The toxicity of three geographic strains of LdNPV （LdNPV-D collected from Northern American, LdNPV-H collected from Heilongjiang Province of China and LdNPV-J collected from Japan） to the 2nd -instar larvae of gypsy moth feeding on larch, Larix principis-rupprechtii were examined in lab. The results showed that LD50 of LdNPV-D, LdNPV-H and LdNPV-J Were 24 OBs/uL （14-38 OBs/uL）, 30 OBs/uL（ 16-67 OBs/uL）and 4 472 OBs/uL（ 1 149-79 335 OBs/uL） respectively. LT50 of the above three were 9.6 d（8.6-11.9 d）,20.6 d（17.9-28.5 d） and 20.2 d（17.7- 25.9 d） respectively. LdNPV-D strain had more virulent lethal effect on gypsy moth than the others.LdNPV-J was the weakest strain of the three.

关 键 词：舞毒蛾 核型多角体病毒 地理品系 寄主植物 毒力 

分 类 号：S763.420.6[农业科学—森林保护学] Q959.181[农业科学—林学]