松褐天牛的捕食性天敌莱氏猛叩甲的生态位  

The niche of Tetrigus lewisi, a predaceous natural enemy of Monochamus alternatus

作　　者：宋冀营[1] 骆有庆[1] 严晓素 蒋平 陈翼龙[3] 

机构地区：[1]北京林业大学资源环境学院省部共建森林培育与保护教育部重点实验室,北京100083 [2]浙江省森林病虫防治检疫站,杭州310020 [3]唐山职业技术学院,唐山063004

出　　处：《昆虫知识》2007年第5期707-710,F0004,共5页Entomological Knowledge

基　　金：973项目资助(2002CB111404)。

摘　　要：经野外调查结合室内实验发现莱氏猛叩甲Tetrigus lewisi Candèze为松褐天牛Monochamus alternatu Hope的捕食性天敌。且莱氏猛叩甲还可取食马尾松角胫象Shirahoshizoinsisiosus(Voss)和松幽天牛Asemumamuren Kraatz。室内试验表明,1头莱氏猛叩甲在4个月左右的时间内最多可取食17头松褐天牛。林间,该叩甲在马尾松衰弱木上的种群密度为平均3～4头/株,以树干3m以下分布较多。通过对其空间生态位的研究发现该虫与松褐天牛的空间生态位宽度相当,且这2种昆虫的生态位重叠值和生态位的比例相似性较大。Field investigation and laboratory study show that Tetrigus lewisi Candeze is one of predaceous natural enemies of Monochamus alternatus Hope. It can eat at most 17 individuals of M. alternatus in 4 months under laboratory conditions. The click beetle can also eat larvae of Shirahoshizo insisiosus （Voss） and Asemum amuren Kraatz. These elaters population density in weak Pinus massoniana was 3 - 4 larvae per tree. And they live concentratedly in 0 - 3 m height stems of hosts. According to the study of niche, the population niche width of Tetrigus lewisi was equivalent to the niche width of M. alternatus. Furthermore, the niche overlap and proportional similarity of niche between the two species were both big.

关 键 词：莱氏猛叩甲 松褐天牛 捕食性天敌 生态位 

分 类 号：S769[农业科学—森林保护学]