【摘要】 [目的]观察不同浓度的高锰酸钾对鲫鱼呼吸运动和咳嗽运动的影响。[方法]采用单因子试验设计和直接观察记录法,研究不同浓度的高锰酸钾在不同温度、不同作用时间和不同pH条件下对鲫鱼呼吸运动和咳嗽运动的影响。[结果]鲫鱼的呼吸频率和咳嗽反应频率随着高锰酸钾溶液浓度的升高、温度的升高和处理时间的延长而增大,但刺激条件升高到一定数值后,鲫鱼的呼吸机能受到影响,咳嗽反应频率和呼吸频率又开始变小;中性环境下鲫鱼的呼吸机能处于最佳状态,强酸强碱会使鱼体发生病变,严重抑制呼吸机能。[结论]不同浓度的高锰酸钾在不同条件施用时,均对鲫鱼的呼吸运动和咳嗽运动产生一定的影响。更多还原

【Abstract】 [Objective] To observe the effects of potassium permanganate on respiratory rate and cough frequency of Carassius auratus(C.auratus) in different conditions.[Method] According to the simple factor design of experiment,the respiratory rate and cough frequency of C.auratus were observed and recorded.The factors included concentration of potassium permanganate,temperature,time and pH.[Result] The respiratory rate and cough frequency of C.auratus were increased and then decreased with the increasing concentrations of potassium permanganate,rising of temperature,prolongation of treatment time.The respiratory function of C.auratus was the best in the pH=7.0 condition.The strong acid and alkali caused the fish lesions and inhibited the respiratory function of C.auratus.[Conclusion] The potassium permanganate at different concentrations may impact the cough frequency and respiratory rate of C.auratus.更多还原