Inhibition of Ca2+ uptake in freshwater carp,Cyprinus carpio, during short-term exposure to aluminum

✍ Scribed by Verbost, Pieter M. ;Lafeber, Floris P. J. G. ;Spanings, Franciscus A. T. ;Aarden, Elisabeth M. ;Bonga, Sjoerd E. Wendelaar

• Book ID: 102895243
• Publisher: John Wiley and Sons
• Year: 1992
• Tongue: English
• Weight: 781 KB
• Volume: 262
• Category: Article
• ISSN: 0022-104X
• DOI: 10.1002/jez.1402620303

✦ Synopsis

Abstract

In carp exposed to pH 5.2 in fresh water, the Ca^2+^ influx from the water is reduced by 31% when compared to fish in water of neutral pH. At pH 5.2, the Ca^2+^ influx but not Na^+^ uptake is decreased by aluminum (Al). Al reduces Ca^2+^ influx dose‐dependently: a maximum 55% reduction was observed after 1–2 h exposure to 200 μg·1^−1^ (7.4 μM) Al. Branchial Ca^2+^ efflux is less sensitive to Al and affected only by exposure for more than 1 h to high Al concentrations. Na^+^ influx is not affected by concentrations Al up to 400 μg·1^−1^. Na^+^ efflux, similarly to Ca^2+^ efflux, increased when fish were exposed for more than 1 h to 400 μg·l^−1^ Al. © 1992 Wiley‐Liss, Inc.