Abstract
ABSTRACT Adult rainbow trout, acclimated to external calcium concentrations ranging from 60–5700 μequiv/1, were exposed to pH 4·0–4·1 for 44 h. Initially, this exposure provoked massive net losses of sodium and chloride across the gills which arose through a combination of an inhibition of active transport and, more importantly, a stimulation in diffusional efflux. Subsequently, ion losses declined substantially, largely due to a rapid decline in passive efflux but also to a slower, partial recovery in sodium transport. External calcium concentration was virtually without effect on ion fluxes either prior to or following acid exposure but had a definite effect during acid exposure. This effect was initially upon the ratio of Cl− to Na+ loss and later upon the degree of inhibition of sodium and chloride transport. Possible mechanisms to explain the complex interactions of calcium and pH are proposed.
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Dates
Type | When |
---|---|
Created | 4 years, 4 months ago (April 24, 2021, 9:41 p.m.) |
Deposited | 2 years, 7 months ago (Jan. 11, 2023, 7:57 a.m.) |
Indexed | 1 week, 6 days ago (Aug. 19, 2025, 6:14 a.m.) |
Issued | 42 years, 8 months ago (Jan. 1, 1983) |
Published | 42 years, 8 months ago (Jan. 1, 1983) |
Published Online | 42 years, 8 months ago (Jan. 1, 1983) |
Published Print | 42 years, 8 months ago (Jan. 1, 1983) |
@article{McDONALD_1983, title={The Interaction of Environmental Calcium and Low pH on The Physiology of the Rainbow Trout, Salmo Gairdneri}, volume={102}, ISSN={1477-9145}, url={http://dx.doi.org/10.1242/jeb.102.1.141}, DOI={10.1242/jeb.102.1.141}, number={1}, journal={Journal of Experimental Biology}, publisher={The Company of Biologists}, author={McDONALD, D. G. and Walker, R. L. and Wilkes, P. R. H.}, year={1983}, month=jan, pages={141–155} }