Abstract: The effects of body weight (137.2±6.7)g, (194.3±9.7)g, (327.5±19.4)g and (549.7±21.9)g, temperature15℃, 20℃, 25℃ and 30℃, and pH 6.0, 7.0, 8.0 and 9.0, on respiratory rate were studied in this paper, with tench Tinca tinca samples of (123.8-578.8)g body weight and (21.54-34.37)cm body length, to expounding the relationship between respiratory behavior and environmental conditions. Respiratory rate was calculated according to the number of breaths per 1 min of the gill cover. The results showed that The respiratory rate decreased with the body weight increasing, and raised with the temperature increasing. The higher the temperature, the faster the breathing is. At 30℃, respiratory rate of the juvenile fish was (137.12±3.13) times/min,at 15℃, respiratory rate of the juvenile fish was (66.52±6.74) times/min. At the beginning the respiratory rate increased then decreased with pH increasing, the respiratory rate was lowest at pH7.0, it was (90.20±3.78) times/min.The conclution showed that the respiratory rate was affected by temperature、pH and body weight.

Key words: tench;body weight, temperature, pH, respiratory rate

摘要： 为了解丁鱥(Tinca tinca)呼吸行为与环境条件的关系，对不同体质量[ (137.2±6.7)g、 (194.3±9.7)g、(327.5±19.4)g和 (549.7±21.9)g]、不同温度（15℃、20℃、25℃和30℃）、不同pH（6.0、7.0、8.0和9.0）条件下丁鱥的呼吸频率进行研究。以每1 min 丁鱥鳃盖张开的次数计为呼吸频率（次/min）。结果显示，随着体质量的逐渐升高，呼吸频率逐渐降低，两者呈负相关；水温与呼吸频率呈正相关，随着温度的升高，幼鱼呼吸频率增加的幅度逐渐降低，高温( 30℃) 时丁鱥呼吸急促，呼吸频率达到(137.12 ±3.13) 次/min，温度为15℃时，幼鱼的呼吸频率下降到(66.52±6.74)次/min；随着水体pH的升高，丁鱥的呼吸频率先降低后升高，pH7.0时呼吸频率最低，为(90.20±3.78)次/min 。研究表明，体重、温度和pH均可影响丁鱥的呼吸频率。

关键词: 丁鱥, 体重, 温度, pH, 呼吸频率