乐山地区长足大竹象自然种群生命表的组建与分析  

Construction and Analysis of Natural Population Life Table of Cyrtotrachelus Buqueti in Leshan

作　　者：王智勇[1,2] 尹鹏[2] 曹渊 曾执娟 刘欢 张媛 WANG Zhiyong;YIN Peng;CAO Yuan;ZENG Zhijuan;LIU Huan;ZHANG Yuan(Bamboo Diseases and Pests Control and Resources Development Key Laboratory of Sichuan Province,Leshan Normal University,Leshan Sichuan 614000,China;School of Life Sciences,Leshan Normal University,Leshan Sichuan 614000,China)

机构地区：[1]竹类病虫防控及资源开发四川省重点实验室(乐山师范学院),四川乐山614000 [2]乐山师范学院生命科学学院,四川乐山614000

出　　处：《乐山师范学院学报》2019年第12期51-55,共5页Journal of Leshan Normal University

基　　金：乐山师范学院校级项目“乐山赤水两地长足大竹象生物学习性对比研究”(E1404)

摘　　要：为摸清长足大竹象种群变化规律,文章采用野外调查方式研究了乐山地区长足大竹象从卵期到成虫蛰伏期的存活率和致死因素,构建了长足大竹象种群生命表。结果表明:其卵孵化率为61.60%、笋内幼虫存活率为79.17%、入土幼虫化蛹成功率为64.38%、羽化成功率为63.27%、成虫蛰伏存活率为80.65%;关键致死因素为虫卵腐烂(死亡率33.60%)和蛹被真菌感染(死亡率32.65%);种群趋势指数为I=2.40,说明乐山地区种群呈现增加的趋势。To explore how Cyrtotrachelus Buqueti population changes,field survey have been carried out in Leshan,from egg incubation till adult dormancy,life table has been constructed and analyzed.It showed that the egg hatching rate is 61.60%,the survival rate of feeding stage larvae,pupation,eclosion and dormant adult are 79.17%,64.38%,63.27% and 80.65% respectively.The key lethal factors are egg corrupting(33.60%)and fungal infections on pupae(32.65%).Accordingly,the index of population trend were calculated as 2.40,indicating the population of Cyrtotrachelus Buqueti in Leshan will keep growing.

关 键 词：长足大竹象 生命表 种群动态 种群趋势指数 

分 类 号：S763.3[农业科学—森林保护学]