首页|基于年龄-龄期两性生命表分析阿维菌素对松褐天牛肿腿蜂的亚致死效应

基于年龄-龄期两性生命表分析阿维菌素对松褐天牛肿腿蜂的亚致死效应

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[目的]阿维菌素是林业系统中常用的杀虫剂之一.该研究旨在探究阿维菌素对天敌昆虫——松褐天牛肿腿蜂Sclerodermus alternatusi的亚致死效应.[方法]采用微量点滴法,测定阿维菌素对松褐天牛肿腿蜂成蜂的毒力,并用亚致死剂量LD10(3.20 ×10-5 μg/头)和LD30(8.86 × 10-5 μg/头)阿维菌素处理松褐天牛肿腿蜂雌成蜂,测定其F1代的发育历期、繁殖力、存活率及雌、雄成蜂寿命等参数的变化,并组建年龄-龄期两性生命表.[结果]与空白对照(未做任何处理)相比,LD10和LD30剂量阿维菌素处理均能显著缩短松褐天牛肿腿蜂雄成蜂寿命,但对卵、幼虫及蛹的历期无显著影响,但LD10剂量阿维菌素处理还显著延长了松褐天牛肿腿蜂雌成蜂寿命.同时,LD10和LD30剂量阿维菌素处理下松褐天牛肿腿蜂F1代雌成蜂的平均单雌产卵量较空白对照组分别升高了 24.70％和64.56％.此外,F1代种群参数结果表明,LD10和LD30剂量阿维菌素处理使松褐天牛肿腿蜂平均世代周期(T)均显著延长,分别较空白对照组增加了 7.01％和4.38％,但是对内禀增长率(r)与周限增长率(λ)无显著影响;LD10剂量阿维菌素处理后松褐天牛肿腿蜂净增殖率(R0)较空白对照组显著增加.[结论]亚致死剂量的阿维菌素会抑制松褐天牛肿腿蜂后代的存活率,同时也能显著促进后代雌成蜂繁殖力,对后代种群增长无显著影响,阿维菌素是一个不影响天敌种群存活的较为理想的林业害虫防治药剂.
Analysis of sublethal effects of abamectin on Sclerodermus alternatusi(Hymenoptera:Bethylidae)based on age-stage,two-sex life table
[Aim]Abamectin is one of the commonly used insecticides in forestry systems.This study aims to investigate the sublethal effects of abamectin on a natural enemy insect,Sclerodermus alternatusi.[Methods]The toxicity of abamectin to S.alternatusi adults was determined by topical application.After treatment with sublethal doses[LD10(3.20 × 10-5 µg/individual)and LD30(8.86 × 10-5 µg/individual)]of abamectin to female adults of S.alternatusi,the changes in the developmental duration,fecundity,survival rate,and longevity of female and male adults of the F1 generation were determined,and the age-stage,two-sex life table was constructed.[Results]Compared to the blank control(non-subjected to any treatment),both LD10 and LD30 of abamectin significantly reduced the male adult longevity of S.alternatusi,but had no significant effects on the egg,larval and pupal duration.However,LD10 of abamectin significantly extended the female adult longevity of S.alternatusi.Additionally,the average numbers of laid eggs per female of the F1 generation in treatments with LD10 and LD30 of abamectin increased by 24.70％and 64.56％,respectively,as compared with that in the blank control.Furthermore,the results of population parameters of the F1 generation revealed that,compared to the blank control,both LD10 and LD30 of abamectin significantly extended the mean generation time(T)of S.alternatusi by 7.01％and 4.38％,respectively,but had no significant impact on the intrinsic rate of increase(r)and finite rate of increase(λ).The net reproductive rate(R0)of S.alternatusi in the treatment group with LD10 of abamectin significantly increased as compared to that in the blank control group.[Conclusion]Sublethal doses of abamectin significantly inhibited the survival and increased the fecundity of females of S.alternatusi offspring,but had no significant impact on its population growth.Therefore,abamectin is a promising insecticide for the control of forest pests without affecting the population survival of their natural enemies.

Sclerodermus alternatusiabamectinsublethal effectage-stage,two-sex life tablefecundity

李飞、何树林、周操、陈再炎、徐杉、李旭东、章冰川

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重庆师范大学生命科学学院,重庆 401331

重庆师范大学昆虫与分子生物学研究所,媒介昆虫重庆市重点实验室,重庆 401331

松褐天牛肿腿蜂 阿维菌素 亚致死效应 年龄-龄期两性生命表 繁殖力

重庆市教委科学技术研究项目重庆市教委科学技术研究项目重庆市教委科学技术研究项目重庆市自然科学基金项目重庆市自然科学基金项目重庆师范大学基金项目重庆师范大学基金项目

KJQN202200532KJQN202200539KJQN202200530cstc2021jcyjmsxmX0609CSTB2024NSCQ-MSX067621XLB01221XLB011

2024

10.16380/j.kcxb.2024.09.006

昆虫学报
中国科学院动物研究所,中国昆虫学会

昆虫学报

CSTPCD北大核心
影响因子：0.756
ISSN：0454-6296
年,卷(期)：2024.67(9)