Author:
Dietz Thomas H.,Scheide John I.,Saintsing David G.
Abstract
The unionid mussels Ligumia subrostrata and Carunculina texasensis maintain a sodium steady state in artificial pond water. When the mussels were injected with serotonin, catecholamines, or phenylephrine (< 2 × 10−5 M/L blood), the influx of Na was elevated 150–220% above controls and the animals accumulated Na from the medium. A similar response was observed with injections of dibutyryl cyclic AMP. Isolated gills of mussels accumulate Na from a pond-water bathing medium and the Na transport rate was stimulated by serotonin but not catecholamines. Serotonin was present in the gill tissue (2.26 ± 0.18 μg/g wet gill). Serotonergic neurons innervated by adrenergic fibers may be directly stimulating the Na transporting tissues in the gill of freshwater mussels.
Publisher
Canadian Science Publishing
Subject
Animal Science and Zoology,Ecology, Evolution, Behavior and Systematics
Cited by
26 articles.
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