摘要
针对水质毒性动态监测需求,构建一种基于斑马鱼(Danio rerio)趋流性、规避性、厌障碍性与趋光性的应激反应行为特征的水质评估系统。以1毒性单位(1 TU)Cd^(2+)模拟突发污染,通过流水式系统(1 L·min^(-1))与高清CCD摄像头追踪技术,量化斑马鱼在四方位逃避区(面积1/24倍~1/3倍)、多间距障碍物(0.5~2.5 cm)及多种障碍物材料中的行为响应,并分析了红光与蓝光光照条件下斑马鱼趋光性的变化。结果表明,趋流性主导暴露前左下区域选择(P<0.05),规避性驱动暴露后期右下区域迁移(P<0.01);1/12倍面积逃避区(12 cm×9 cm)与1.5 cm间距吸管触发最高行为响应(P<0.001);红光刺激激发斑马鱼的趋光特性,显著提高了行为学检测的灵敏度和特异性(P<0.05),而蓝光则诱导避光性逃逸(P<0.01)。本研究通过精准捕获斑马鱼应激行为的时空特征,成功构建了基于斑马鱼行为学的水质评估模型,为水环境保护提供了科学和可靠的支持,具有一定的生态和环境意义。
In response to the increasing demand for dynamic monitoring of water quality toxicity,a water quality assessment system was developed based on the stress-response behavioral characteristics of zebrafish(Danio rerio),encompassing fluidity,avoidance,obstacle aversion,and phototaxis.A simulation of sudden pollution was performed using 1 toxicity unit(1 TU)Cd^(2+).Through a controlled flow system(1 L·min^(-1))and high-definition CCD tracking technology,the behavioral responses of zebrafish were quantified in four-directional escape areas(ranging from 1/24 to 1/3 of the total area),multi-spacing obstacles(0.5-2.5 cm),and various materials.Additionally,changes in phototactic behavior under red and blue light illumination conditions were systematically analyzed.The results revealed that the flow tendency significantly influenced the selection of the left lower area prior to exposure(P<0.05),while the avoidance factor drove migration to the right lower area during the later stages of exposure(P<0.01).Notably,an escape area measuring 1/12 of the total area(12 cm×9 cm)and straws spaced at 1.5 cm i ntervals elicited the strongest behavioral responses(P<0.001).Red light stimulation enhanced the phototactic s ensitivity and specificity of zebrafish(P<0.05),whereas blue light induced significant light-avoidance behavior(P<0.01).This study successfully established a robust water quality assessment model by precisely capturing the spatiotemporal dynamics of zebrafish stress-related behaviors,providing scientific and reliable support for the r ecovery of endangered fish communities and water environmental protection,which has certain ecological and e nvironmental significance.
作者
王芳芳
黄毅
刘翼滔
牛聪
祝培添
柳畅
WANG Fangfang;HUANG Yi;LIU Yitao;NIU Cong;ZHU Peitian;LIU Chang(School of Civil&Architecture Engineering,Xi’an Technological University,Xi’an 710021,China)
出处
《生态毒理学报》
北大核心
2025年第6期322-329,共8页
Asian Journal of Ecotoxicology
基金
国家自然科学基金青年基金(51909203)
大学生创新创业训练项目“濒危鱼类逃避特性及避难所结构模拟装置研究”(202510702181)。
关键词
水质预警
斑马鱼
应激反应
神经毒性
water quality early warning
zebrafish
stress response
neurotoxicity
