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Journal of Experimental Biology 54,19-27 (1971)
Published by Company of Biologists 1971

Evidence for Na⁺/H⁺ and Cl^-/HCO₃^- Exchanges During Independent Sodium and Chloride Uptake by the Larva of the Mosquito Aedes Aegypti (L.)

R. H. STOBBART ¹

¹ Department of Zoology, University of Newcastle upon Tyne, Newcastle upon Tyne, NE1 7RU

1. Ionic movements into and out of the starved salt-depleted fourth instar larvae of Aëdes aegypti have been studied during independent uptake of Na⁺ and Cl^-.

2. About 33% of the Na⁺ taken up from Na₂SO₄ is balanced electrically by a loss of K⁺, about 49% is exchanged for H⁺, and about 17.5% is accompanied by SO₄^-2.

3. About 36% of the Cl^- taken up from KCl is presumably balanced electrically by a loss of unknown and possibly organic ions, about 41% is exchanged for HCO₃^- (and possibly OH^-) and about 23% is accompanied by K⁺.

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