32
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: not found

      Effects of temperature and fatigue on the metabolism and swimming capacity of juvenile Chinese sturgeon (Acipenser sinensis).

      Read this article at

      ScienceOpenPublisherPubMed
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Chinese sturgeon (Acipenser sinensis) is a critically endangered species. A flume-type respirometer, with video, was used to conduct two consecutive stepped velocity tests at 10, 15, 20, and 25 °C. Extent of recovery was measured after the 60-min recovery period between trials, and the recovery ratio for critical swimming speed (U crit) averaged 91.88% across temperatures. Temperature (T) effects were determined by comparing U crit, oxygen consumption rate (MO 2), and tail beat frequency (TBF) for each temperature. Results from the two trials were compared to determine the effect of exercise. The U crit occurring at 15 °C in both trials was significantly higher than that at 10 and 25 °C (p < 0.05). The U crit was plotted as a function of T and curve-fitting allowed calculation of the optimal swimming temperature 3.28 BL/s at 15.96 °C (trial 1) and 2.98 BL/s at 15.85 °C (trial 2). In trial 1, MO 2 increased rapidly with U, but then declined sharply as swimming speed approached U crit. In trial 2, MO 2 increased more slowly, but continuously, to U crit. TBF was directly proportional to U and the slope (dTBF/dU) for trial 2 was significantly lower than that for trial 1. The inverse slope (tail beats per body length, TB/BL) is a measure of swimming efficiency and the significant difference in slopes implies that the exercise training provided by trial 1 led to a significant increase in swimming efficiency in trial 2.

          Related collections

          Author and article information

          Journal
          Fish Physiol. Biochem.
          Fish physiology and biochemistry
          Springer Nature
          1573-5168
          0920-1742
          May 04 2017
          Affiliations
          [1 ] Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang, Hubei, 443002, China.
          [2 ] College of Hydraulic & Environmental engineering, China Three Gorges University, Yichang, Hubei, 443002, China.
          [3 ] College of Hydraulic & Environmental engineering, China Three Gorges University, Yichang, Hubei, 443002, China. zhyh@ctgu.edu.cn.
          [4 ] Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang, Hubei, 443002, China. chem_ctgu@126.com.
          [5 ] Hubei Key Laboratory of Three Gorges Project for Conservation of Fishes, Chinese sturgeon Research Institute, China Three Gorges Corporation, Yichang, Hubei, 443002, China.
          [6 ] School of Natural Sciences and Mathematics, Ferrum College, Ferrum, VA, 24088, USA.
          Article
          10.1007/s10695-017-0371-2
          10.1007/s10695-017-0371-2
          28474195
          d6410d62-8ed5-4aa5-b23e-2ca6e3eda89e
          History

          Chinese sturgeon,Oxygen consumption,Swimming performance,Temperature

          Comments

          Comment on this article