不同pH值的水环境对白纹伊蚊生长发育的影响  

Effects of water pH on the growth and development of Aedes albopictus

作　　者：郎静 赵怡双[1] 张惠芬[1] 陈财荣 LANG Jing;ZHAO Yi-shuang;ZHANG Hui-fen;CHEN Cai-rong(Department of Disinfection and Vector Control,Taizhou Center for Disease Control and Prevention,Taizhou,Zhejiang 318000,China)

机构地区：[1]台州市疾病预防控制中心消毒与病媒生物防制科,浙江台州318000

出　　处：《中国媒介生物学及控制杂志》2024年第4期401-404,共4页Chinese Journal of Vector Biology and Control

摘　　要：目的探讨不同pH值水环境对白纹伊蚊卵孵化、幼虫和蛹生长发育的影响,为白纹伊蚊防治提供新的思路和方法。方法在pH值为3.0、3.5、4.5、5.5、6.5、9.5、10.5、11.5和12.0的水中,观察白纹伊蚊卵期、幼虫和蛹期发育状况,记录各组孵化率、4龄幼虫存活率、化蛹率、蛹羽化率和各时期发育时间,以脱氯自来水为对照,分析水pH值改变对白纹伊蚊生长发育的影响。采用Excel 2010软件进行数据整理,SPSS 18.0软件进行统计分析。计数资料用率表示,计量资料以x±s表示,用χ^(2)检验和方差分析比较各组间差异。结果当pH≥10.5或pH≤4.5时,白纹伊蚊卵孵化率明显低于对照组(pH=7.6±0.4)(χ^(2)=1646.693,P<0.001),当pH≥11.5时,卵的孵化时间明显滞后(F=52.241,P<0.001)。与对照组(pH=7.6±0.4)相比,当pH≥10.5或pH=4.5时,白纹伊蚊4龄幼虫存活率和化蛹率明显下降(χ^(2)=94.088,P<0.001;χ^(2)=119.722,P<0.001),当pH≥11.5时,化蛹时间明显延长(F=20.148,P<0.001)。与对照组(pH=7.6±0.4)相比,不同pH值水环境中白纹伊蚊羽化率差异无统计学意义(χ^(2)=5.861,P=0.556),但当pH≥10.5或pH=4.5时,羽化时间比对照组明显延长(F=150.398,P<0.001)。结论白纹伊蚊生长发育的水环境适宜pH值为5.5≤pH≤9.5,当水环境pH值超出适宜范围后会影响白纹伊蚊生长发育。Objective To investigate the effects of water pH on egg hatching,larva and pupa growth and development of Aedes albopictus,and to provide a new method for the control of Ae.albopictus.Methods In water of different pH(3.0,3.5,4.5,5.5,6.5,9.5,10.5,11.5,and 12.0),the development of mosquitoes through egg,larval,and pupal stages were observed.The hatching rate,larval survival rate,pupation rate,eclosion rate of pupae,and time for each developmental stage were recorded,and the effects of the pH of water on the development of Ae.albopictus in comparison with those placed in dechlorinated water were analyzed.Excel 2010 and SPSS 18.0 softwares were used for data collation and statistical analysis.Categorical data were described as rates,and continuous data were described as x?±s.The Chi-square test and one-way analysis of variance were used for inter-group comparison.Results For pH≥10.5 or pH≤4.5,the hatching rate of Ae.albopictus eggs was significantly lower than that of the control group(pH=7.6±0.4)(χ^(2)=1646.693,P<0.001).The time to hatching was significantly longer at pH≥11.5(F=52.241,P<0.001).Compared with those of the control group(pH=7.6±0.4),the survival rate and pupation rate of the 4th-instar larvae of Ae.albopictus were significantly decreased at pH≥10.5 or pH=4.5(χ^(2)=94.088,P<0.001;χ^(2)=119.722,P<0.001),and the time to pupation was significantly prolonged at pH≥11.5(F=20.148,P<0.001).Compared with the control group(pH=7.6±0.4),the eclosion rate had no significant difference in each group(χ^(2)=5.861,P=0.556),but the time to eclosion was significantly longer than that of the control group for pH≥10.5 or pH=4.5(F=150.398,P<0.001).Conclusion The suitable water pH for the growth and development of Ae.albopictus ranges from 5.5 to 9.5,beyond which the growth and development of Ae.albopictus can be offected.

关 键 词：白纹伊蚊 水pH值 生长发育 

分 类 号：R384.1[医药卫生—医学寄生虫学]