The Comparison of Critical Swimming Speed of Four Species of Fish at Two AcclimationTemperature

doi:DOI: 10.13859/j.cjz.201504004

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The Comparison of Critical Swimming Speed of Four Species of Fish at Two AcclimationTemperature
DOI:
                        DOI: 10.13859/j.cjz.201504004
                    
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Affiliation:①Scientific Observing and Experimental Station of Fishery Resources and Environment in the Upper and Middle Reaches of the Yangtze River,Ministry of Agriculture,Yangtze River Fisheries Research Institute,Chinese Academy of Fishery Sciences,①Scientific Observing and Experimental Station of Fishery Resources and Environment in the Upper and Middle Reaches of the Yangtze River,Ministry of Agriculture,Yangtze River Fisheries Research Institute,Chinese Academy of Fishery Sciences,①Scientific Observing and Experimental Station of Fishery Resources and Environment in the Upper and Middle Reaches of the Yangtze River,Ministry of Agriculture,Yangtze River Fisheries Research Institute,Chinese Academy of Fishery Sciences,①Scientific Observing and Experimental Station of Fishery Resources and Environment in the Upper and Middle Reaches of the Yangtze River,Ministry of Agriculture,Yangtze River Fisheries Research Institute,Chinese Academy of Fishery Sciences,①Scientific Observing and Experimental Station of Fishery Resources and Environment in the Upper and Middle Reaches of the Yangtze River,Ministry of Agriculture,Yangtze River Fisheries Research Institute,Chinese Academy of Fishery Sciences,①Scientific Observing and Experimental Station of Fishery Resources and Environment in the Upper and Middle Reaches of the Yangtze River,Ministry of Agriculture,Yangtze River Fisheries Research Institute,Chinese Academy of Fishery Sciences
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Abstract:

The critical swimming speed was measured in mandarin fish (Siniperca chuatsi), darkbarbel catfish (Pelteobagrus vachelli), crucian carp (Carassius auratus) and bighead carp (Aristichthys nobilis) at 28±1℃ and 10±1℃. The experiment was conducted in the annular flume (Fig 1). It mainly consists of two parts: power part and swimming area. The relationship between flow velocity in the tank and the impeller speed was showed in Fig 2 and the flow velocity could be adjusted by controlling the impeller speed. SPSS 17.0 software was used for data processing. Duncan’s multiple comparison procedure was used to compare the means of different groups. Comparing with the swimming performance among the species with similar length, it was discovered that the absolute critical swimming speed and relatively critical swimming speed of mandarin fish was significantly lower than bighead carp while the absolute critical swimming speed and relatively critical swimming speed of darkbarbel catfish was significantly lower than crucian carp (Table 1). A comparison of the critical swimming speed between two acclimation temperatures (Fig 3), the results showed that the temperature had extremely significant impacts on swimming performance. The critical swimming speed of fish at normal temperature was significantly higher than that at low temperature.

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DUAN Xin-Bin, YU Li-Xiong, LUO Hong-Wei, WANG Ke, CHEN Da-Qing, LIU Shao-Ping. 2015. The Comparison of Critical Swimming Speed of Four Species of Fish at Two AcclimationTemperature. Chinese Journal of Zoology, 50(4): 529-536.

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Received:September 26,2014
Revised:May 09,2015
Adopted:May 04,2015
Online: July 16,2015
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