Sodium, net acid and ammonia fluxes in freshwater-adapted European flounder ( Platichthys flesus L.). Pharmacological inhibition and effects on gill ventilation volume
Sodium, net acid and ammonia fluxes in freshwater-adapted European flounder ( Platichthys flesus L.). Pharmacological inhibition and effects on gill ventilation volume
复制标题
适应淡水的欧洲比目鱼（Platichthys flesus L.）的钠、净酸和氨通量。
DOI：
10.1111/j.1469-7998.1998.tb00174.x
复制
发表时间：
1998
影响因子：
2
通讯作者：
W. Potts
中科院分区：
文献类型：
--
作者：
A. P. Clarke;W. Potts
测量了适应淡水的广盐性欧洲比目鱼的鳃净钠吸收量、净酸和氨排泄量以及鳃通气量。外部阿米洛利或乙酰唑胺（0.1 mmol L-1）引起显着减少（P < 0.05）钠的吸收和净酸排泄，而0.05 mmol L-1硫氰酸盐没有影响的任何流量测量。然而，乙氧唑胺（0.1 mmol L-1），造成显着减少，在所有流量测量，也造成了32%的减少，由鳃呼出的水的体积。在这项研究中，钠的吸收和净酸排泄是间接联系在一起的，可能是通过质子泵的安排，这被认为是鳟鱼鳃钠吸收的一种机制。
Net branchial sodium uptake, and net acid and ammonia excretion, together with gill ventilation volumes were measured in euryhaline European flounder Platichthys flesus, adapted to freshwater. External amiloride or acetazolamide (0.1 mmol l-1) caused significant reductions (P < 0.05) in sodium uptake and net acid excretion, while 0.05 mmol l-1 thiocyanate had no effect on any of the fluxes measured. Ethoxzolamide (0.1 mmol l-1) however, caused significant reductions in all fluxes measured and also caused a 32% reduction in the volume of water exhaled by the gills. In this study, it appears that sodium uptake and net acid excretion are indirectly linked, probably by a proton pump arrangement which is thought to be a mechanism for sodium uptake in trout gills.