摘要
以野生亚成体齐口裂腹鱼为实验对象,进行了光色选择实验和趋光性实验,旨在找到异齿裂腹鱼的偏好光色和光强。实验变量设置5种光色(红、黄、蓝、绿和黑暗)及3种流速工况(0、0.15和0.30 m·s-1)。在光色选择实验中,研究了齐口裂腹鱼在静水、光强照度为10 lx下不同光环境下的偏好行为。结果表明:齐口裂腹鱼对5种光色的喜好顺序为绿色>蓝色>黑色>红色>黄色,且在绿光和蓝光区域中的分布率和选择指数显著大于红光和黄光区域(P<0.05)。在趋光性实验中,研究了光源光照强度均为20 lx,不同水流流速(0、0.15和0.30 m·s-1)时齐口裂腹鱼的趋光性,发现:无论在静水还是动水工况下,齐口裂腹鱼均对蓝光和绿光表现为正趋光性,对红光和黄光表现为负趋光性;齐口裂腹鱼属弱趋光性鱼类,且其趋光性不随水流的增大而增大,趋光阈值为1.40~2.65 lx。依据实验结果,我们建议在工程中采用光强照度为20 lx的绿光进行诱集齐口裂腹鱼。
The color preference and phototactic behavior of wild subadult Schizothorax prenanti were investigated, aiming at finding out their preference for light color and light intensity. Fish behaviors were observed under five different lighting conditions （red, yellow, blue, green and dark） and three flow rates （0, 0.15 and 0.30 m·s^-1）. In the light color selection experiment, the color preference in static water was observed under the different lighting conditions with the luminance intensity of 10 lx. The color preferable order of S. prenanti for the five kinds of light colors was green, blue, black, red and yellow. The distribution ratio and selection index in the green and blue light regions were greater than that in the red and yellow light regions （P〈0.05）. In the phototaxis experiment, the phototactic behaviors were observed under different flow rates （0, 0.15 and 0.30 m·s^-1） at the luminance intensity of 20 lx. The results indicated that S. prenanti showed a positive phototactic behavior to the blue and green light under the hydrostatic and hydrodynamic conditions. In contrast, fish showed a negative phototactic behavior to the red and yellow light. S. prenanti preferred low luminance intensities and the phototactic behavior did not increase with increasing water flow rate. The phototactic threshold was 1.40-2.65 lx. Our results indicated that green light with a luminance intensity of 20 lx is appropriate for attracting S. prenanti in the engineering projects.
作者
许家炜
陈静
林晨宇
刘雁
白艳勤
张宁
尹入成
石小涛
XU Jia-wei;CHEN Jing;LIN Chen-yu;LIU Yan;BAI Yan-qin;ZHANG Ning;YING Ru-cheng;SHI Xiao-tao(Engineering Research Center of Eco-environment in Three Gorges Reservoir Region,Ministry of Education,China Three Gorges University,Yichang 443002,Hubei,China;Power China Chengdu Engineering Corporation Limited,Chengdu 610072,China)
出处
《生态学杂志》
CAS
CSCD
北大核心
2018年第8期2394-2402,共9页
Chinese Journal of Ecology
基金
国家自然科学基金项目(51579136)
湖北省高等学校优秀中青年科技创新团队计划鱼类过坝技术项目(T201703)
三峡大学硕士学位论文培优基金(2018SSPY008)资助
关键词
齐口裂腹鱼
光环境
弱光
趋光反应
Schizothorax prenanti
light environment
low light
phototaxis.
