Hurst T P, Kay B H, Ryan P A, Brown M D
Queensland Institute of Medical Research and the University of Queensland, Australian Centre for International and Tropical Health and Nutrition, P.O. Royal Brisbane Hospital, Queensland 4029, Australia.
J Econ Entomol. 2007 Feb;100(1):61-5. doi: 10.1603/0022-0493(2007)100[61:seomlo]2.0.co;2.
Laboratory studies were conducted to determine the sublethal effects of exposure to selected larvicides on the critical swimming speed (Ucrit) of crimson-spotted rainbowfish, Melanotaenia duboulayi (Castlenau). This native fish is common throughout southeastern Queensland, and it is increasingly being distributed as a biological control agent of mosquitoes. The selected larvicides included, two organophosphate (OP) compounds (temephos and pirimiphos-methyl), two microbial larvicides (Bacillus thuringiensis spp. israelensis [Bti] de Barjac and Bacillus sphaericus [Bs] Neide), and an insect growth regulator (IGR) (s-methoprene). Exposure to the OP temephos at 10 times the effective field concentration (EFC; 0.33 mg/liter), and OP pirimiphos-methyl at the EFC (0.50 mg/liter), resulted in a significant reduction in the Ucrit of M. duboulayi under controlled conditions. Conversely, exposure to the microbial (Bti and Bs) and IGR (s-methoprene) larvicides at 10 times the EFC had no effect on the Ucrit of M. duboulayi. Accordingly, these products are suitable for integrated pest management programs in Australia.
开展了实验室研究，以确定接触选定杀幼虫剂对红斑虹银汉鱼（Melanotaenia duboulayi (Castlenau)）临界游泳速度（Ucrit）的亚致死效应。这种本地鱼类在昆士兰州东南部很常见，并且越来越多地作为蚊虫生物防治剂进行推广。选定的杀幼虫剂包括两种有机磷（OP）化合物（双硫磷和甲基嘧啶磷）、两种微生物杀幼虫剂（以色列亚种苏云金芽孢杆菌[Bti] de Barjac和球形芽孢杆菌[Bs] Neide）以及一种昆虫生长调节剂（IGR）（烯虫酯）。在受控条件下，接触有效田间浓度（EFC；0.33毫克/升）10倍的OP双硫磷以及EFC（0.50毫克/升）的OP甲基嘧啶磷，导致红斑虹银汉鱼的Ucrit显著降低。相反，接触EFC 10倍的微生物（Bti和Bs）和IGR（烯虫酯）杀幼虫剂对红斑虹银汉鱼的Ucrit没有影响。因此，这些产品适用于澳大利亚的综合虫害管理计划。
