CAJ | 학술논문

采用实验生态学方法，在16、20、24、28和32℃下测定了当年（体质量0.57~3.82g）和1冬龄（17.39~54.40g）拉氏 Phoxinus lagowskii的耗氧率及其昼夜变化和窒息点。结果表明：拉氏昼间耗氧率高于夜间，当年苗种耗氧率峰值在中午和傍晚，而成鱼的仅在傍晚；在16~32℃范围内，体质量为（1.72±0.60）g的拉氏耗氧率（OR）随温度（T）升高而增加，其关系式为OR=0.1734e0.2277T（R2=0.9911），窒息点在1.53~1.65mg·L-1之间，平均（1.59±0.04）mg·L-1；在20~24℃下，拉氏（0.77~52.4g）耗氧率（OR）随体质量（W）增加而呈下降趋势，其关系式为OR=0.3248W-0.2206（R2=0.8076），窒息点在1.10~1.55mg·L-1之间，均值为（1.29±0.19）mg·L-1。
채용실험생태학방법，재16、20、24、28화32℃하측정료당년（체질량0.57~3.82g）화1동령（17.39~54.40g）랍씨 Phoxinus lagowskii적모양솔급기주야변화화질식점。결과표명：랍씨주간모양솔고우야간，당년묘충모양솔봉치재중오화방만，이성어적부재방만；재16~32℃범위내，체질량위（1.72±0.60）g적랍씨모양솔（OR）수온도（T）승고이증가，기관계식위OR=0.1734e0.2277T（R2=0.9911），질식점재1.53~1.65mg·L-1지간，평균（1.59±0.04）mg·L-1；재20~24℃하，랍씨（0.77~52.4g）모양솔（OR）수체질량（W）증가이정하강추세，기관계식위OR=0.3248W-0.2206（R2=0.8076），질식점재1.10~1.55mg·L-1지간，균치위（1.29±0.19）mg·L-1。
The oxygen consumption rate, asphyxiant point and diurnal changes in oxygen consumption rate were studied in fat minnow Phoxinus lagowskii juveniles with body weight of 0.57~3.82g and 17.39~54.40g at water temperature of 16, 20, 24, 28 and 32℃by an experimental ecological method. The results showed that the oxygen consumption rates were found more at daytime than that at night, with tow oxygen consumption peaks at 13:00 and 19:00 in the juveniles with body weight of 0.57~3.82 g, and only one oxygen con-sumption peak at 19:00 in the yearlings with body weight of 17.39~54.40g. The juveniles with body weight of (1.72±0.60)g had in-crease in the oxygen consumption rate with increasing acclimation temperature within 16~32℃, with an equation of OR=0.1734e0.2277T (R2=0.9911) between oxygen consumption rate (OR) and temperature (T). The asphyxiant points were found to be varied from 1.53 mg·L-1 to 1.65mg·L-1, with mean of (1.59±0.04) mg·L-1, in the yearlings with body weight of 17.39~54.40g. The oxygen consump-tion rates(OR) in the juveniles with body weight of(0.77~52.4g) were found to be decreased with increasing body weight(W) with an equation of OR=-0.039ln(W)+0.3129(R2=0.7267) at water temperature of(20~24℃), and the asphyxiant points were ranged from 1.10 to 1.55mg·L-1, with mean of(1.29±0.19) mg·L-1.