远东龟铁甲的生活史和种群动态研究  

Life cycle and population dynamics of Cassidispa relicta Medvedev

作　　者：张志林 李国军 侯建利 姜雄 高爱军 段立清[3] ZHANG Zhilin(Forest Pest Management and Quarantine Station of Ulanqab,Inner Mongolia,Ulanqab 012000,China)

机构地区：[1]乌兰察布市森林病虫害防治检疫站,内蒙古乌兰察布012000 [2]内蒙古自治区森林病虫害防治检疫站,内蒙古呼和浩特010010 [3]内蒙古农业大学林学院,内蒙古呼和浩特010010

出　　处：《中国森林病虫》2020年第3期13-15,共3页Forest Pest and Disease

摘　　要：远东龟铁甲Cassidispa relicta Medvedev是近年来在内蒙古大青山国家级自然保护区白桦Betula platyphylla天然次生林首次发生危害的食叶害虫,属于中国新纪录种。通过野外调查与室内饲养相结合的研究方法,观察、记录远东龟铁甲的生物学特性和发生规律。研究表明:该虫1 a发生1代,4月中下旬开始化蛹,5月中旬出现成虫,6月上旬产卵,6月底孵化幼虫,虫龄4龄,10月初开始随落叶下树越冬,幼虫喜欢在落叶下层越冬,越冬幼虫死亡率高,成虫羽化率为20.7%。Cassidispa relicta Medvedev,a newly recorded species in China,is a defoliator of Betula platyphylla secondary forests in Daqingshan National Nature Reserve of Inner Mongolia in recent years.The life habits,the occurrence patteren and the life-history of C.relicta were observed and investigated in field and laborary.The rescults showed that the beetle occurred one generation a year.The pupation happened in mid and late April.Adults emerged in mid-May and laid eggs in early June.Eggs hatched at the end of June.The larva of C.relicta had four instars.Old larvae began to overwinter as leaves falling in early October.Larvae preferred substratum of fallen leaves.The mortality during the overwinter was very high and the adult emergence rate was 20.7%.

关 键 词：远东龟铁甲 发生与危害 生活史 种群动态规律 

分 类 号：S763.38[农业科学—森林保护学]