摘要
噻虫嗪是一类较第一代新烟碱类杀虫剂更广谱、高效、低毒的农药,但它对意大利蜜蜂工蜂的生存风险尚不明确。本研究通过糖水混毒法测定了噻虫嗪对意大利蜜蜂新出房蜂(1 d)、哺育蜂(7 d)和采集蜂(22 d)的48 h急性经口毒性,确定其各自的亚致死浓度LC5、LC15和LC25,并分别研究了其在3个亚致死浓度下的生存风险。结果表明,新出房蜂、哺育蜂和采集蜂48 h后LC50分别为248.13、64.18和44.20ng/g。新出房蜂经LC5和LC15处理后其平均存活寿命与对照均无显著差异,经LC25处理后其平均存活寿命与对照缩短19.0 d。哺育蜂经LC5处理后其平均存活寿命与对照均无显著差异,经LC15和LC25处理后其平均存活寿命与对照分别缩短9.2和15.0 d。采集蜂经LC5和LC15处理后其平均存活寿命与对照均无显著差异,经LC25处理后其平均存活寿命与对照缩短10.9 d。上述结果表明噻虫嗪的使用可能会对蜜蜂的生存存在较大风险,因此,建议相关管理部门加强噻虫嗪在中国的田间残留监测,开展半田间和田间条件下噻虫嗪对意大利蜜蜂的风险评价工作。
Compared with the first generation neonicotinoids, thiamethoxam is used widely for its higher efficiency, broader spectrum and lower toxicity to mammalian. However, there are no reports on the sublethal effects of thiamethoxam on the honey bees Apis mellifera L., especially on the survival of the workers. Here we assessed the acute oral toxicities of thiamethoxam to the newly emerged bees（1 d）, nurses（7 d） and foragers（22 d）. Also, the survival risk of exposure to three sub-lethal concentrations（LC5, LC15 and LC25） of thiamethoxam on different ages of workers was investigated. The results showed that the LC50 for the newly emerged bees, nurses and foragers were 248.13, 64.18 and 44.20 ng/g, respectively. No significant differences in lifespan of the newly emerged bees and the foragers were detected between the control, LC5 and LC15 treatments, while LC25 treatment reduced lifespan by 19.0 d. For the nurses, the LC5 treatment didn＇t shorten bees＇ lifespan, but the LC15 and LC25 treatments reduced longevity by 9.2 and 15.0 d, respectively. For the foragers, there were no significant differences among the lifespan of the LC5, LC15 treatments and the control, while the LC25 treatment shortened lifespan by 10.9 d. These results indicate that the extensive application of thiamethoxam has great potential threat on longevity of the honey bees. More attention to monitor the field residual of thiamethoxam and assess the risk of thiamethoxam on honey bees in semi-field and field context is needed.
作者
岳孟
宗伏霖
马昌盛
吴杰
罗术东
YUE Meng ZONG Fulin MA Changsheng WU Jie LUO Shudong(Institute of Apicultural Research, Chinese Academy of Agricultural Sciences/Key Laboratory for Biology of Insect-Pollinator, Ministry of Agriculture, Beijing 100093, China Institute for the Control ofAgrochemicals, Beijing 100026, China China Agricultural University, Beijing 100083, China)
出处
《中国生物防治学报》
CSCD
北大核心
2017年第5期638-643,共6页
Chinese Journal of Biological Control
基金
基金项目 国家蜂产业技术体系(CARS-45)
中国农业科学院科技创新工程(CAAS-ASTIP-2016-IAR)
关键词
噻虫嗪
意大利蜜蜂
工蜂
存活寿命
亚致死效应
thiamethoxam
Apis mellifera
workers
survival analysis
sub-lethal effects
