PMID: 6628978Oct 1, 1983Paper

Response of prolactin cells in the goldfish adapted to diluted seawater with or without calcium

General and Comparative Endocrinology
M OlivereauP Dubourg

Abstract

The activity of prolactin (PRL) cells was investigated in goldfish gradually adapted to diluted (30%) artificial seawater (ASW) or directly immersed in 23% ASW and in similar saline solutions free of calcium. When Ca2+ is omitted, PRL cells appear slightly more active than those in saline solutions with calcium, nuclear areas having intermediate values between those in freshwater (FW) and those in diluted SW. Nuclear areas are also slightly larger in Mg-free SW. Other signs of stimulation are not apparent. These data are compared to those obtained in other teleost species. The lack of stimulation in PRL cells of goldfish adapted to deionized water (DW) suggests that calcium plays a minor role in controlling prolactin secretion in this teleost.

Related Concepts

Calcium
Cell Nucleus
Dace
Goldfish
Pituitary Stalk
Prolactin
Water-Electrolyte Balance

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