alexa Acid-base balance and plasma composition in the aestivating lungfish (Protopterus).
Agri and Aquaculture

Agri and Aquaculture

Journal of Marine Science: Research & Development

Author(s): DeLaney RG, Lahiri S, Hamilton R, Fishman P

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Abstract Upon entering into aestivation, Protopterus aethiopicus develops a respiratory acidosis. A slow compensatory increase in plasma bicarbonate suffices only to partially restore arterial pH toward normal. The cessation of water intake from the start of aestivation results in hemoconcentration and marked oliguria. The concentrations of most plasma constituents continue to increase progressively, and the electrolyte ratios change. The increase in urea concentration is disproportionately high for the degree of dehydration and constitutes an increasing fraction of total plasma osmolality. Acid-base and electrolyte balance do not reach a new equilibrium within 1 yr in the cocoon.
This article was published in Am J Physiol and referenced in Journal of Marine Science: Research & Development

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