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引用本文:邹桂伟,罗相忠,胡德高,潘光碧.长薄鳅耗氧率与窒息点的研究.湖泊科学,1998,10(1):49-54. DOI:10.18307/1998.0108
Zou Guiwei,Luo Xiangzhong,Hu Degao,Pan Guangbi.The Asphyxiation Point and Oxygen Consumption Rate in Leptobotia elongata (Bleeker). J. Lake Sci.1998,10(1):49-54. DOI:10.18307/1998.0108
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长薄鳅耗氧率与窒息点的研究
邹桂伟, 罗相忠, 胡德高, 潘光碧
中国水产科学研究院长江水产研究所, 荆州 434000
摘要:
应用测定流水中溶氧量的方法, 测定了长薄鳅的耗氧率、耗氧量及窒息点试验表明:长蒲鳅的耗氧率(Y')随鱼体重(W, g)的增加而降低, 而耗氧量(Y)则随体重增加而增大, 其关系式分别为:Y'=186.576W-0.2043, Y=0.186w0.7962.温度对长薄鳅的耗氧率有影响, 在13-30℃范围内.耗氧率随水温升高而逐渐增大耗氧率的温度敏感区域是13-23℃和28-30-℃, 而在23-28℃范围内变化幅度较小, 标准代谢量变化也较少.是长薄鳅生长的适宜温度长薄鳅的耗氧率具有昼夜节律性, 耗氧高峰是在凌晨2:00, 低谷是在下午16:00左右其窒息点在小体重组(平均体重为38-39g)为0.94-1.06mg/L;在大体重组(平均体重为250-3209)为0.62-0.70mg/L
关键词:  `
DOI:10.18307/1998.0108
分类号:
基金项目:湖北省科委重点科技项目(941P1303)
The Asphyxiation Point and Oxygen Consumption Rate in Leptobotia elongata (Bleeker)
Zou Guiwei, Luo Xiangzhong, Hu Degao, Pan Guangbi
Chungyjiang Fisheries Institute, Chinese Academy of Fisheries Science, Jinzhou 434000
Abstract:
The oxygen consumption rate and asphyxiaton point of Leptobotia elongata (Bleaker)are studied by Krogh's method The oxygen consumption rate(Y')of the fish decreases with the body weight increasing, while oxygen Consumption(Y)increases with the body weight(W')in-creasing under water temperature 22-23℃.The regretion line may be represented by the fol-lowing equations respectively:Y'=186.576W-0.2043 and Y'=0.186W0.7962.The water ternpera-ture affects rate of oxygen cons umption in Leptobotia etongata, it increases gradually with water temperature rising at 13-3O℃.Changes of oxygen consumption rate are bigger at the ranges of low temperature(13-23℃)and high temperature(28-30℃), but amount of increase in oxy-gen consumption rate and metabolism is relatively lower under water temperature 23-28℃.Daily fluctuation of the oxygen consumption rate was also observed in the experiment The oxygen consum ption rate Was the highest at 2:00.a.m., the lowest at 4:00.P.m.Asphyxiation point of the fish is 0.94-1 06mg/L when the body weight of the fish is 38-59g.0.62-0.70rag/L when body weight is 250-320g.
Key words:  Leptobotia elongata (Bleeker)  oxygen consumption rate  asphyxiation point
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