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作 者:李阳希 侯轶群 金瑶 万帆 石小涛[2] 朱正强 周超艳 曾玉红[5] LI Yang-xi;HOU Yi-qun;JIN Yao;WAN Fan;SHI Xiao-tao;ZHU Zheng-qiang;ZHOU Chao-yan;ZENG Yu-hong(Key Laboratory of Ecological Impacls of Hydraulic-Projects and Restoration of Aquatic Ecosystem of Ministry of Water Resources,Institute of Hydroecology,Ministry of Water Resources and Chinese Academy of Sciences,Wuhan 430079,China;College of Hydraulic and Environmental Engineering,China Three Gorges University,Yichang 443000,Hubei,China;Northwest Engineering Corporation Limited,Xi'an 710065,China;Hubei Zhongshui Changjiang Ecologi-cal Protection Research Institue Co.Ld,Wuhan 430079,China;Wuhan University,Wuhan 430079,China)
机构地区:[1]水利部中国科学研究院水工程生态研究所,水利部水工程生态效应与生态修复重点实验室,武汉430079 [2]三峡大学水利与环境学院,湖北宜昌443000 [3]中国电建集团西北勘测设计研究院有限公司,西安710065 [4]湖北中水长江生态保护研究院有限公司,武汉430079 [5]武汉大学,武汉430079
出 处:《生态学杂志》2022年第9期1853-1861,共9页Chinese Journal of Ecology
基 金:水利部水工程生态效应与生态修复重点实验室开放基金(2019-2);国家自然科学基金优秀青年科学基金项目(51922065);湖北省高等学校优秀中青年科技创新团队计划项目(T201703)资助。
摘 要:以保护物种齐口裂腹鱼(Schizothorax prenanti)、大渡河软刺裸裂尻鱼(Schizopygopsis malacanthus)和黄石爬鮡(Euchiloglanis kishinouyei)为研究对象,在静水及水流流速为0.3和0.7 m·s^(-1)条件下,选取3种脉冲电压(26、30、36 V·m^(-1))、4种脉冲频率(3、5、8、12 Hz)共12种组合来研究不同电学参数对拦鱼电栅的驱鱼效果影响。结果表明:在静水及水流流速为0.3和0.7 m·s^(-1)条件下(实验期间水温为18^(2)0.5℃,水体电导率为248^(2)70μS·cm^(-1)),当脉冲电压为36 V、脉冲频率为5 Hz时,拦鱼电栅对3种试验鱼的驱鱼效果最佳且对3种试验鱼均无损伤;随着水流流速的增加,虽然3种试验鱼的拦截率、感应距离均减小,但昏厥率并没有明显变化。本实验中3种试验鱼对不同电场的趋避行为反应,可作为电拦鱼设施设计的依据,也可为3种试验鱼的保护提供参考。We investigated the repellency of electric barriers with different electrical parameters in still water and flowing water of 0.3 and 0.7 m·son three protected species from the Dadu River, Schizothorax prenanti, Schizopygopsis malacanthus, and Euchiloglanis kishinouyei. Twelve treatments, including three pulse voltages(26, 30 and 36 V) and four pulse frequencies(3, 5, 8 and 12 Hz), were conducted at each velocity at 18-20.5 ℃ of water temperature and 248-270 μS·cmof water conductivity. The results showed that the barrier had the best repellent effect harmlessly on the three fish species with the pulse voltage of 36 V and pulse frequency of 5 Hz in all the three flow conditions. Despite the declined interception rate and the sensing distance of all the three fish species with higher flow velocity, there was no significant difference. The escaping response of the three fish species at given electric settings can serve as the basis for electric barriers design of fish and lay a foundation for their conservation.
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