适应海水的莫桑比克罗非鱼的鳃钠交换：催乳素和垂体切除的影响。

Branchial sodium exchange in seawater-adapted Tilapia mossambica: effects of prolactin and hypophysectomy.

作者信息

Dharmamba M, Maetz J

出版信息

J Endocrinol. 1976 Aug;70(2):293-9. doi: 10.1677/joe.0.0700293.

DOI:10.1677/joe.0.0700293

Abstract

The effects of exogenous prolactin and hypophysectomy were tested on Na exchange across the gills of Tilapia mossambica adapted to sea-water. Exogenous prolactin produced a 75% decrease of both total Na influx and Na efflux. Total Na influx was measured simultaneously with the drinking rate. Water ingestion stopped almost completely in prolactin-treated fish. Thus branchial net excretion flux of Na was reduced 75% by prolactin. Hypophysectomy produced a 50% inhibition of Na efflux across the gill.

摘要

研究了外源性催乳素和垂体切除对适应海水环境的莫桑比克罗非鱼鳃部钠交换的影响。外源性催乳素使钠总流入量和钠流出量均减少了75%。钠总流入量与饮水速率同时进行测量。经催乳素处理的鱼几乎完全停止了摄水。因此，催乳素使鳃部钠的净排泄通量降低了75%。垂体切除使鳃部钠流出量受到50%的抑制。