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草鱼、鲢和瓦氏黄颡鱼幼鱼感应流速的比较 被引量:39

Induction velocity of juvenile grass carp,silver carp,and darkbarbel catfish
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摘要 在21±1℃水温下,使用自行制作的鱼类游泳行为测试槽,采用流速递增的方法测定了草鱼(Ctenopharyngodon idellus)(体长9.64±3.12cm,体重20.97±16.71g)、鲢(Hypo-phthalmichthys molitrix)(体长10.60±3.45cm,体重24.37±18.61g)和瓦氏黄颡鱼(Pel-teobagrus vachelli)(体长11.54±1.46cm,体重20.98±6.94g)幼鱼个体的感应流速。结果表明:草鱼、鲢和瓦氏黄颡鱼幼鱼的感应流速分别是(8.21±0.68)、(6.74±0.84)和(33.11±3.06)cm·s-1,相对感应流速分别是(0.91±0.22)、(0.67±0.15)和(2.9±0.29)BL·s-1;鲢和草鱼幼鱼的感应流速差异不显著(P>0.05),但瓦氏黄颡鱼比草鱼和鲢幼鱼感应流速大近4倍,差异显著(P<0.05);因此,草鱼和鲢幼鱼较瓦氏黄颡鱼幼鱼对流速的感应更敏感。本实验结果可为设计鱼道、确定拖网速度等提供一定的科学指导。 By using self-made test chamber and the method of increasing velocity, this paper studied the induction velocity of juvenile grass carp (Ctenopharyngodon idellus) (body length 964±3.12 cm, body weight 20.97±16.71 g), silver carp (Hypophthalmichthys molitrix) (body length 10.60±3.45 cm, body weight 24.37±18.61 g), and darkbarbel catfish (Pelteobagrus vachelli) (body length 11.54±1.46 cm, body weight 20.98±6.94 g) at water temperature 21±1 ℃. The induction velocity of the juvenile grass carp, silver carp, and darkbarbel catfish was (8.21±0.68), (6.74±0.84), and (33.11±3.06) cm&middot;s-1, and the relative induction velocity was (0.91±0.22), (0.67±0.15), and (2.9±0.29) BL&middot;s-1, respectively. No significant difference was observed in the induction velocity between juvenile grass carp and silver carp (P〉0.05), but the induction velocity of juvenile darkbarbel catfish was four times higher than that of the juvenile grass carp and silver carp. It was suggested that the juvenile grass carp and silver carp were more sensitive to the water velocity than the juvenile darkbarbel catfish. This study could provide scientific reference for designing the fish way and determining the trawling speed.
出处 《生态学杂志》 CAS CSCD 北大核心 2013年第8期2085-2089,共5页 Chinese Journal of Ecology
基金 楚天学者基金项目(KJ2010B002) 国家自然科学基金项目(50979049 51009082 51210105017) 中国博士后科学基金项目(20100480487) 水利部公益性行业科研专项(201201030 201201028-02) 中国长江三峡集团公司科研项目(SDHZ2011117) 农业部海洋与河口渔业资源及生态重点开放实验室开放基金项目(20090011) 贵州北盘江电力股份有限公司合作项目(SDHZ2012137) 水利部水工程生态效应与生态修复重点实验室开放基金项目资助
关键词 草鱼 瓦氏黄颡鱼 感应流速 grass carp silver carp darkbarbel catfish induction velocity
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