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Sodium balance in the American alligator

✍ Scribed by Ellis, Tamir M. ;Evans, David H.

Publisher: John Wiley and Sons
Year: 1984
Tongue: English
Weight: 487 KB
Volume: 231
Category: Article
ISSN: 0022-104X
DOI: 10.1002/jez.1402310304

No coin nor oath required. For personal study only.

✦ Synopsis

Alligators in fresh water regulate their plasma and cloacal fluid electrolytes at concentrations similar to those of other crocodilians. They have an exchangeable Na pool of 60.8 pmol/gm and a unidirectional Na efflux of 3.9 pmol/100 gm-hr. Of this 11% is excreted from the cloaca, 43% presumably diffuses across the body integument, and the remaining 46% is lost from the head region. The integumental Na efflux is estimated to be 0.01 pmol/cm2 Shr. In fresh water the net flux is 0.5 pmo1/100 gm.hr, which suggests that nondietary Na uptake can compensate for 86% of unidirectional Na loss.

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