An Analysis of acid vase,ionic and water balance in rainbow trout (salmo gairdneri) exercised at cruising speeds

Authors

  • M. V. E. ATTYGALLE Department of Zoology, University of Sri Jayewardenepura, Nugegoda

DOI:

https://doi.org/10.31357/vjs.v3i1.1161

Abstract

Rainbow trout (Salmo gairdneri) were exercised at cruising speeds for 5hours. A slight but significant increase in dorsal aortic blood pH after I hour ofexercise was accompanied by significant decreases in PeDl and total C02content of blood. These changes were maintained throughout the exercise periodof 5 hours. This respiratory alkalosis could be due to hyperventilation and/orthe result of increased uptake of Na+ and Cl- which occurred along with theincrease in plasma volume in order to maintain normal osmotic concentrations.The uptake of Na+ and CI- occurred presumably via branchial Na+ /H+ andCI- /HCO2- ion exchange mechanisms.

Author Biography

M. V. E. ATTYGALLE, Department of Zoology, University of Sri Jayewardenepura, Nugegoda

Department of Zoology,

University of Sri Jayewardenepura,

Nugegoda

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Published

2013-06-17