摘要
【目的】本研究旨在探究高效氯氟氰菊酯对桃蛀螟Conogethes punctiferalis的亚致死效应,为指导田间科学使用高效氯氟氰菊酯防治桃蛀螟提供理论基础。【方法】采用药膜法测定高效氯氟氰菊酯对桃蛀螟3日龄成虫48 h的毒力;用亚致死浓度(LC_(1),LC_(5)和LC_(10)浓度)高效氯氟氰菊酯处理3日龄桃蛀螟成虫,观察统计F_(0)代桃蛀螟成虫寿命、繁殖力和存活率以及F_(1)代桃蛀螟幼虫和蛹历期、繁殖力、孵化率、化蛹率和羽化率,并且组建F_(1)代年龄-龄期两性生命表。【结果】在处理48 h内,高效氯氟氰菊酯对桃蛀螟3日龄成虫的LC_(1),LC_(5)和LC_(10)值分别为0.233,0.601和0.995 mg/L。LC_(1),LC_(5)和LC_(10)浓度高效氯氟氰菊酯处理桃蛀螟3日龄成虫后,F_(0)代成虫平均单雌产卵量分别减少了5.56%,24.55%和51.06%。与对照组(丙酮处理)相比,LC_(10)浓度高效氯氟氰菊酯处理3日龄成虫后F_(0)代桃蛀螟成虫寿命显著缩短了1.60 d,产卵期显著缩短了1.29 d。F_(1)代种群结果表明,与对照组相比,LC_(1),LC_(5)和LC_(10)浓度高效氯氟氰菊酯处理组卵期存活率分别降低了8.70%,13.75%和30.38%,平均单雌产卵量分别减少了38.05%,30.75%和24.84%,蛹期存活率分别降低了2.70%,13.87%和27.68%。此外,与对照组相比,LC_(1),LC_(5)和LC_(10)浓度高效氯氟氰菊酯处理组F_(1)代桃蛀螟特定年龄生殖力(f_(x))曲线峰值分别降低了39.76%,34.68%和39.56%,F_(1)代桃蛀螟产卵前期、雌虫特定年龄繁殖力曲线的峰值、内禀增长率(r)、周限增长率(λ)和净繁殖率(R_(0))均显著降低。【结论】亚致死浓度高效氯氟氰菊酯处理显著降低F_(0)代桃蛀螟的寿命和繁殖力,同时显著降低F_(1)代的产卵量,抑制种群增长。本研究结果为科学使用高效氯氟氰菊酯防治桃蛀螟提供理论依据。
【Aim】This study aims to explore the sublethal effects of lambda-cyhalothrin on Conogethes punctiferalis,so as to provide a theoretical basis for its scientific application in field management of this pest.【Methods】The 48-h toxicity of lambda-cyhalothrin to the 3-day-old adults of C.punctiferalis was determined using the residual film method.Sublethal concentrations(LC_(1),LC_(5) and LC_(10))of lambda-cyhalothrin were applied to the 3-day-old adults of C.punctiferalis,the adult longevity,fecundity and survival rate of the F_(0) generation,and the larval and pupal duration,fecundity,hatching rate,pupation rate and emergence rate of the F_(1) generation were observed and recorded.The age-stage,two-sex life table was constructed for the F_(1) generation.【Results】Within 48-h exposure,the LC_(1),LC_(5) and LC_(10) values of lambda-cyhalothrin against the 3-day-old adults of C.punctiferalis were 0.233,0.601 and 0.995 mg/L,respectively.Exposure of the 3-day-old adults of C.punctiferalis to LC_(1),LC_(5) and LC_(10) of lambda-cyhalothrin resulted in reductions in the average number of eggs laid per female by 5.56%,24.55% and 51.06%,respectively.After the 3-day-old adults of C.punctiferalis were exposed to LC_(10) of lambda-cyhalothrin,the adult longevity of the F_(0) generation was significantly shortened by 1.60 d,and the oviposition period significantly decreased by 1.29 d,as compared to those in the control group exposed to acetone.The results for the F_(1) population showed that,in the treatment groups with LC_(1),LC_(5) and LC_(10) of lambda-cyhalothrin,the survival rates at the egg stage decreased by 8.70%,13.75% and 30.38%,respectively,the average number of eggs laid per female decreased by 38.05%,30.75% and 24.84%,respectively,and the survival rates at the pupal stage decreased by 2.70%,13.87% and 27.68%,respectively,as compared to those in the control group.In addition,in the treatment groups with LC_(1),LC_(5) and LC_(10) of lambda-cyhalothrin,the peak values of the age-specific reproductive rate(f_(x))curve in the F_(1) generation of C.punctiferalis decreased by 39.76%,34.68% and 39.56%,respectively,and the pre-oviposition period,the peak of the female age-specific fecundity,intrinsic rate of increase(r),finite rate of increase(λ)and net rate of increase of the F_(1) generation(R_(0))were all significantly reduced as compared to those in the control group.【Conclusion】Sublethal concentrations of lambda-cyhalothrin significantly reduced the longevity and fecundity of the F_(0) generation of C.punctiferalis,and also caused a significant decline in the number of eggs laid of the F_(1) generation,thereby suppressing population growth.The results of this study provide a theoretical foundation for the scientific application of lambda-cyhalothrin in the management of C.punctiferalis.
作者
李凯
李振
汪晓龙
席玉强
李振亚
尹新明
LI Kai;LI Zhen;WANG Xiao-Long;XI Yu-Qiang;LI Zhen-Ya;YIN Xin-Ming(College of Plant Protection,Henan Agricultural University,Zhengzhou 450002,China;Henan International Laboratory for Green Pest Control,Zhengzhou 450002,China;Department of Biological Engineering,Henan University of Animal-Husbandry and Economy,Zhengzhou 450046,China)
出处
《昆虫学报》
北大核心
2025年第8期1094-1104,共11页
Acta Entomologica Sinica
基金
国家现代产业技术体系(CARS-27)
河南省联合基金(235101610045)
中原学者项目(254000510002)。
作者简介
李凯,男,1998年2月生,河南商丘人,硕士研究生,研究方向为昆虫毒理学,E-mail:likai_22@163.com;通讯作者:尹新明,E-mail:xinmingyin@hotmail.com。
