摘要
【目的】研究烟粉虱Bemisia tabaci与桃蚜Myzus persicae的种间竞争。【方法】在(26±1)℃的条件下,设置了1∶1、1∶5和1∶10的种间竞争比例,调查烟粉虱和桃蚜的发育历期、存活率、成虫寿命及产卵/仔量情况。【结果】种间竞争延长了烟粉虱1~2龄若虫发育所需的时间,但对整个若虫期的发育速度影响不大。烟粉虱∶桃蚜为1∶1、1∶5时对烟粉虱若虫的存活率影响较小,但缩短了烟粉虱雌成虫的寿命、降低了其产卵量;而烟粉虱∶桃蚜为1∶10明显降低了烟粉虱若虫期的存活率,延长了烟粉虱雌成虫的寿命,提高了其后代繁殖量。种间竞争明显延长了桃蚜若虫期的发育时间,降低了若虫期的存活率。相对而言,桃蚜∶烟粉虱为1∶1、1∶5时,桃蚜成虫的寿命有所缩短,但对其单雌产仔量影响较小;桃蚜∶烟粉虱为1∶10显著延长了桃蚜雌成虫寿命的同时,降低了其单雌产仔量。【结论】生态位重叠的昆虫的种间竞争对昆虫种群数量影响很大,有时甚至会发生种间的竞争取代。
【Objective】To investigate the interspecific competition between Bemisia tabaci and Myzus persicae.【Method】Three different interspecific competition ratios(1∶1,1∶5and1∶10)were established under the condition of(26±1)℃.The development time,survival rates,adult longevity and fecundity of B.tabaci and M.persicae were investigated.【Result】For B.tabaci,interspecific competition prolonged the development time of1st and2nd instar nymphs,but had little effect on the developing rate of the whole nymphal stage.The1∶1and1∶5ratios of B.tabaci to M.persicae had little effect on the survival rate of B.tabaci nymphs,shortened the longevity of adult female,and caused a reduction in fecundity of adult females.The1∶10ratio of B.tabaci to M.persicae clearly reduced the survival rate of B.tabaci nymphs,extended the longevity of adult females,and increased the reproductive capacity of their offsprings.For M.persicae,interspecific competition clearly prolonged the developmental time of nymphs and reduced the survival rate of nymphs.The1∶1and1∶5ratios of M.persicae to B.tabaci shortened the longevity of M.persicae adult,while had little effect on female fecundity.The1∶10ratio of M.persicae to B.tabaci significantly prolonged the longevity of M.persicae females,while reduced female fecundity.【Conclusion】Interspecific competition between insects with overlapping niche has a great impact on the population dynamic of insects,and sometimes even causes competitive replacement.
作者
凡泽云
范许哲
任丽梅
王磊
ALIShaukat
邱宝利
FAN Zeyun;FAN Xuzhe;REN Limei;WANG Lei;QIU Baoli(Key Laboratory of Bio-pesticide Innovation and Application in Guangdong Province/Engineering Technology Research Center of Agricultural Pest Biocontrol in Guangdong Province, Guangzhou 510642, China;Engineering Research Center of Biological Control, Ministry of Education/College of Agriculture,South China Agricultural University, Guangzhou 510642, China)
出处
《华南农业大学学报》
CAS
CSCD
北大核心
2018年第1期70-75,共6页
Journal of South China Agricultural University
基金
国家重点研发计划(2017YFD0200400)
广东省科技创新领军人才专项基金(2016TX03N273)
广州市科技计划项目(201509010023)
关键词
烟粉虱
桃蚜
种间竞争
生长发育
繁殖力
Bemisia tabaci
Myzus persicae
interspecific competition
growth and development
reproductive ability
作者简介
凡泽云(1993—)，女，硕士研究生，E-mail: fanzy@stu.scau.edu.cn;通信作者： 邱宝利(1973—)，男，教授，博士，E-mail:baileyqiu@scau.edu.cn
