农药胁迫对2种体色型麦长管蚜生长发育和繁殖的影响  

Effect of pesticide stress on the development and reproduction of different body-color biotypes of Sitobion avenae (Fab.)

作　　者：亢菊侠[1,2] 惠凯凯[2] 胡祖庆[2] 

机构地区：[1]杨凌职业技术学院药物工程系,陕西杨凌712100 [2]西北农林科技大学植物保护学院,陕西杨凌712100

出　　处：《西北农林科技大学学报（自然科学版）》2011年第7期92-96,共5页Journal of Northwest A&F University(Natural Science Edition)

基　　金：国家自然科学基金项目(39970112;30470268)

摘　　要：【目的】研究农药胁迫对不同体色型麦长管蚜生长发育和繁殖的影响,为蚜虫生态遗传与进化提供理论依据。【方法】在不同剂量氧化乐果、吡虫啉农药胁迫下,于人工气候箱中饲养2种不同体色型(红色型和绿色型)麦长管蚜(Sitobion avenae Fab.)初生若蚜,分别测定各处理麦长管蚜的发育历期、体质量差、相对日均体质量增长率、种群平均世代周期、净增殖率及内禀增长率等生长发育和繁殖生物学参数。【结果】随着氧化乐果和吡虫啉施用剂量的增加,2种体色型麦长管蚜的发育历期、种群平均世代周期均增加,且绿色型麦长管蚜增加幅度比红色型大;2种体色型麦长管蚜的相对日均体质量增长率、净增殖率、内禀增长率均减少,且绿色型麦长管蚜减小幅度比红色型大。【结论】农药胁迫对2种体色型麦长管蚜的生长发育具有显著的延缓作用,对其繁殖有显著的抑制作用,且绿色型麦长管蚜比红色型更敏感。【Objective】 Effects of pesticide stress on different body-color biotypes of colors of aphids were studied to provide theoretical basis for genetic inheritance and evolution.【Method】 Under strict controlled conditions in artificial bioclimatic chamber,new-born nymph of red and green biotypes of Sitobion avenae were placed on wheat treated under pesticide stress.Their impacts on biological characteristics of aphids（development duration（T）,weight difference,mean relative growth rate（MRGR）,mean generation time,net reproduction rate and intrinsic rate of increase） were subsequently measured.【Result】 The results illustrated that under pesticide stress,as the dose of omethoate and imidacloprid increased,the two body-color biotype of wheat aphid developmental duration and the mean generation time were increased,but the weight differences,the relative growth rate of average daily body weight,net reproductive rate and intrinsic growth rate were reduced.【Conclusion】 Under pesticide stress,the two body-color biotypes reproduction of aphid was reduced,and the green biotype was more sensitive than the red one.

关 键 词：农药胁迫 麦长管蚜 体色生物型 生长发育 繁殖 

分 类 号：S435.122.2[农业科学—农业昆虫与害虫防治]