褐牙鲆内源氮排泄与体重和温度的关系  

EFFECTS OF BODY WEIGHT AND TEMPERATURE ON ENDOGENOUS NITROGEN EXCRETION OF BASTARD HALIBUT, PARALICHTHYS OLIVACEUS

作　　者：线薇薇[1] 朱鑫华[1] 

机构地区：[1]中国科学院海洋研究所

出　　处：《海洋科学集刊》2002年第1期194-198,共5页Studia Marina Sinica

基　　金：国家自然科学基金资助项目;39670574号。

摘　　要：鱼类的氮排泄分为内源氮排泄(ENE)和外源氮排泄(EXE)(Jobling,1993)。外源氮排泄(EXE)是指来自食物源的氮排泄,主要受被消耗食物成分的影响(Brett et al.,1975);内源氮排泄(ENE)表示无外来氮源的最低氦排泄率水平(Jobling,1993),它代表鱼类对蛋白质需求的维持水平。只有摄入蛋白质量超出维持水平时。Effects of body weight and temperature on endogenous nitrogen excretion for the juvenile bastard halibut, Paralichthys olivaceus (T. & S. ) in body weight 1.5 to 115.88 g, were studied at temperature 13. 5℃ 、18 ℃ 、 21. 5℃ 、24℃ and 27℃ , respectively. Ammonia-N excretion rates were 8.54 to 25.77 mg N/kg*9*9*9*9*9d, and urea-N excetion rates were 2.22 to 8.87 mg N/kg*9*9*9*9*9d. The endogenous nitrogen excretion rates of ammonia-N, urea-N, total-N and energy increased with body weight and temperature. The significant relationship among excretion rate, body weight and temperature could be brought forth the following multiple regression equations: Ammonia-N:ln(ENEam) = -7.7121 + 0.67551n( W)-0.0087T2 + 0.4089T(r2= 0.8712, p< 0.05)Urea-N:ln(ENEu)= -6.4315 + 0.65261n(W)-0.0009T2 + 0.1126T (r2= 0.9440, p< 0.05)Total-N:ln(ENEn)= -7.4614 + 0.67171n( W) -0.0087T2 + 0.4075T(r2= 0.9021, p< 0.05)Enegy:ln(ENEe)= -4.3045 + 0.67191n( W) - 0.0089 T2 + 0.4121T(r2= 0.9002, p< 0.05)

关 键 词：内源 褐牙鲆 排泄率 食物成分 蛋白质量 总氮 食物源 呼吸仪 外源 营养级 

分 类 号：Q958[生物学—动物学]