Author Type

Graduate Student

Date of Award

1977

Document Type

Thesis

Publication Status

Version of Record

Submission Date

October 2026

Abstract

Postlarval M. rosenbergii were grown for 28 days in freshwater aquaria containing nine types of artificial solutions of calcium and magnesium. Three calcium concentrations (0.05, 0.80, 1.55 mM) were varied against identical concentrations of magnesium, producing water hardnesses from 10-310 mg/1 as CaCO3. Shrimp were also grown in well water whose calcium and magnesium levels matched those of one type of artificial solution. Other major ions were added to artificial solutions at concentrations similar to those in well water. Two replications were run. There was no evidence that survival, final mean weights, or food conversion ratios were influenced by calcium or magnesium concentrations. Light intensities ranged from 20-55 ftc; there was a suggestion that the higher illuminations were more favorable. Shrimp grown in well water were significantly larger and had significantly lower food conversion ratios than those grown in the matching artificial solution. Well water may therefore contain growth-stimulating substances.

Extent

43 p.

Comments

Thesis (M.S.)--Florida Atlantic University, 1977.|Thesis (M.S.)--Florida Atlantic University, 1977.

Identifier

FADT13864

Format

pdf

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