Oxygen uptake of carp, Cyprinus carpio, swimming in normoxic and hypoxic water
Oxygen uptake of carp, Cyprinus carpio, swimming in normoxic and hypoxic water
复制标题
鲤鱼在常氧和低氧水中游泳的耗氧量
DOI：
10.1007/bf00002504
复制
发表时间：
1982
影响因子：
1.4
通讯作者：
K. Johansen
中科院分区：
文献类型：
--
作者：
Bente Christiansen;J. P. Lomholt;K. Johansen
同步测定了体长约40厘米的鲤鱼在控制的可变氧分压(PO2)下游泳时的氧摄取(VO2)。在Po2和Gt；12 0 mm HgVO2随着游泳速度的增加而增加，从5.6 cm·s−1增加到11.3 cm·s−1。在Po2=14 0 mm Hg时VO2外推为零，20℃时标准摄氧量为36.7mlO2·kg−1·h−1。在最低游泳速度(5.6 cm·S−1)时，摄氧量随水PO2降低而增加。在PO2=70 mm Hg时，VO2几乎翻了一番，而PO2=140 mm Hg。在低氧水中以较高的游泳速度游泳时，VO2相对低游泳速度时的值有所降低。结果，随着水中PO2的降低，表达logVO2的直线的斜率随游泳速度的变化而从正值下降到负值。在PO2=70 mm Hg和100 mm Hg时，游泳结束前和结束时尾静脉采血的PH值与PO2=140 mm Hg时的静息值相比没有任何下降。在这种紧张状态下游泳时，血乳酸浓度没有增加。
SynopsisOxygen uptake (Vo2) was measured in carp of approximately 40 cm length swimming at controlled variable oxygen tensions (Po2). At Po2> 120 mm Hg Vo2 increased with an increase in swimming speed from 5.6 to 11.3 cm · sec−1. Extrapolation of Vo2 to zero activity at Po2 = 140 mm Hg revealed a standard O2 uptake of 36.7 ml O2 · kg−1 · h−1 at 20° C. At the lowest swimming speed (5.6 cm · s−1) the oxygen uptake increased when the water Po2 was reduced. A near doubling in Vo2 was seen at Po2 = 70 mm Hg compared to 140 mm Hg. At higher swimming speeds in hypoxic water Vo2 decreased relative to the values at low swimming speeds. As a result the slope of the lines expressing log Vo2 as a function of swimming speed decreased from positive to negative values with decreasing Po2 of the water. pH of blood from the caudal vein drawn before and at termination of swimming at Po2 = 70 mm Hg and 100 mm Hg did not show any decrease in relation to rest values at Po2 = 140 mm Hg. Blood lactate concentration did not increase during swimming at these tensions.