不同光照强度对鲢、草鱼的诱集效果研究  

Attractive effects of different light intensities on Hypophthalmichthys molitrix and Ctenopharyngodon idellus

作　　者：秦孝辉 王从锋 刘德富[3] 熊锋[1] 汪玲珑[1] 

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002 [2]三峡地区地质灾害与生态环境湖北省协同创新中心,湖北宜昌443002 [3]湖北工业大学资源与环境学院,湖北武汉430068

出　　处：《南方水产科学》2015年第3期47-52,共6页South China Fisheries Science

基　　金：水利部公益性行业科研专项经费项目(201201030);贵州北盘江电力股份有限公司合作项目(SDHZ2012136)

摘　　要：为研究船闸中灯光诱驱鱼技术,观察了不同强度光源对鲢(Hypophthalmichthys molitrix)、草鱼(Ctenopharyngodon idellus)的诱集效果。结果表明,与对照组(无光源)相比,有光组的草鱼在暗区的平均相对时间聚集率[R(t)]均明显升高。随着光源强度的增加,各组中暗区的R(t)变大,鱼的群体重心位置与光源的距离也随之变大,草鱼总体上表现出一定的负趋光性。所有组次中,鲢在2组弱光源下表现出对光照强度没有明显的选择性(P>0.05),与对照组相比无明显的诱集或驱赶效果,而在强光源条件下表现出远离光源的特性。因此,可利用草鱼的负趋光性,在闸室下游部分布置灯光将其驱赶至上游,而利用光源诱集或驱赶鲢的方案不可行。We studied the attractive effects of the light source located in lock model on Hypophthalmichthys molitrix and Ctenopharyng- odon idellus at different light intensities. The results show that the mean relative time aggregation rate [R（t）] in the dark area with light source was higher than the control group （no source）. R（t） in the dark area in all light-source groups increased with increasing light intensity, and so did the distance between central location of fish group and location of light source. As for the H. molitrix, there was no obvious aggregation phenomenon （P 〉 0. 05） in all groups. Therefore, negative phototaxis of C. idellus could be used in driving the fish to the upstream by arranging light in the downstream of the chamber, but use of light trapping or driving H. molitrix are not fea- sible.

关 键 词：光照强度 船闸模型 诱集效果 鲢 草鱼 

分 类 号：Q958.8[生物学—动物学]