取食针叶的桃蛀螟越冬状况调查和生物学特性  

Investigation on the overwintering status and bionomics of needle feeding type of Conogethes punctiferalis

作　　者：况美华[1] 刘曙雯 嵇保中[1] 高江勇[1] 高玉国[1] 王国兴[1] 

机构地区：[1]南京林业大学,南京210037 [2]南京中山陵园管理局,南京210014

出　　处：《昆虫知识》2009年第4期569-573,共5页Entomological Knowledge

基　　金：国家"十一五"科技支撑计划"生态林重大生物灾害综合治理技术"专题:"南方生态林重大病虫害控制技术";专题编号:2006BAD8A1002

摘　　要：结合林间调查和室内饲养，观察、记录取食针叶的桃蛀螟Conogethes punctiferalis（Guen6e）冬状况和生物学特性。结果表明：幼虫吐丝将嫩梢针叶缀合成虫苞，以3～4龄幼虫在虫苞内越冬。松树的有虫梢率为7．6％，每梢虫数为3。16头，平均8．5头。桃蛀螟幼虫期和蛹期的死亡率总和为26．06％，雌雄性比为2：3。越冬代桃蛀螟蛹重、蛹长和蛹宽的平均值分别为75．1mg、13．42和3．39mm。成虫多在22时～8时羽化，羽化率为92．22％。成虫始盛期为5月8日，高峰期为5月11日，盛末期为5月15日。补充营养对成虫寿命有显著的影响，饲喂水、10％蜂蜜水、10％糖醋液均能提高成虫寿命。在室内用清水、10％蜂蜜水和10％糖醋液饲养，成虫寿命的差异不显著。The overwintering status and bionomics of needle-feeding type of the yellow peach moth, Conogethes punctiferalis （Guenee）, were observed both in laboratory and in field. The results showed that larvae rolled the needles on the twigs into a bag with silk, in which they overwintered as the third or fourth instar. The percentage of insect-invaded branches was 7.6. % . The number of larvae per branch varied from 3 to 16 with a mean of 8.5. The mortality in larval and pupal stage was 26.06 % , and the sex ratio （female ： male） was 2 ： 3. The mean weight, length and width of pupae were （75.1 ± 1.8） mg, （ 13.42 ±0.13） mm and （3.39 ± 0.04） mm, respectively. Adults emerged mainly between 10：00 pm - 8：00 am. The emergence rate was 92.22% . The date corresponding to the emergence of 16%, 50% and 84% of total moths were May 8th, May llth and May 15th, respectively. The longevity of adults was significantly affected by adult nutritional conditions. Adults fed on water, 10% honey solution or 10% sugar and vinegar liquid survived significantly longer than those fed on nothing, however, no significant difference was observed among the treatments.

关 键 词：桃蛀螟 取食针叶 越冬状况 生物学特性 

分 类 号：S763.3[农业科学—森林保护学]