3种寄主植物对条沙叶蝉生长发育和繁殖的影响  

Effects of three host plants on the development and fecundity of Psammotettix striatus L.

作　　者：张华普[1] 相建业[1] 吴云锋[1] 胡亮[1] 董旭燕[1] 

机构地区：[1]西北农林科技大学植保学院,教育部植保资源与病虫害治理重点开放实验室,陕西杨凌712100

出　　处：《西北农林科技大学学报（自然科学版）》2008年第10期163-167,共5页Journal of Northwest A&F University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(30571214)

摘　　要：【目的】研究小麦、玉米和狗尾草3种食料植物对条沙叶蝉实验种群生长发育及繁殖的影响。【方法】在25℃恒温条件下,以小麦、玉米和狗尾草为食料,分别观测记录了条沙叶蝉的卵孵化率和发育历期、若虫存活率和发育历期、成虫寿命及产卵量,并组建了条沙叶蝉实验种群生命表。【结果】条沙叶蝉在3种寄主植物上都能完成世代发育;从卵到若虫期的发育历期在小麦上最短(23.33 d),玉米上次之(26.39 d),狗尾草上最长(27.50 d);取食狗尾草时,若虫的存活率(17.22%)最低,其存活曲线属Ⅲ型;取食小麦时,净增值率(6.106 7)、内禀增长力(0.052 3)和周限增长率(1.053 7)均最大,平均世代周期(34.58 d)和种群加倍时间(13.25 d)最短,存活曲线基本符合Ⅱ型;在玉米上平均每雌产卵量(17.63粒)最少,且无明显的产卵高峰期。【结论】用生命表参数和存活曲线等综合评价表明,在3种寄主植物中,小麦最适合条沙叶蝉的生长发育与繁殖,其次分别为玉米和狗尾草。【Objective】 The development and fecundity of Psammotettix striatus L.reared on wheat,corn and green foxtail were studied.【Method】 The eggs hatchability and development period,nymph survival rate and development period,and the longevity of female and oviposition were respectively observed and recorded at 25 ℃,and the life table of experimental population of Psammotettix striatus L was established.【Result】 The insect could develop and reproduce on all tested host plants;the development duration of Psammotettix striatus L.at its immature stages reared on wheat was the shortest（23.33 d）,then on corn（26.39 d）,and the longest on green foxtail（27.50 d）;the survival rate（17.22%） of the nymph reared on green foxtail was lower than those reared on the other two host plants,its survival curve was typeⅢ;the net reproductive rates（6.106 7）,the intrinsic rate of increase（0.052 3） and the finite rate of increase（1.053 7） were the largest,whereas the mean generation times（34.58 d） and the doubling times（13.25 d） were the shortest when reared on wheat,with survival curve type was Ⅱ;mean Oviposition per female（17.63 eggs） was least on corn,and no obvious spawning peak.【Conclusion】 Based on the life table and the survival curves,the most suitable host plants for the development and reproduction of Psammotettix striatus L.was wheat,then corn,followed by green foxtail.

关 键 词：条沙叶蝉 生命表参数 寄主植物 

分 类 号：S435.122.9[农业科学—农业昆虫与害虫防治]