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INFLUENCE OF DISSOLVED CALCIUM AND MAGNESIUM ON POSTLARVAL GROWTH OF THE FRESHWATER SHRIMP MACROBRACHIUM ROSENBERGII

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Date Issued:
1977
Summary:
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.
Title: INFLUENCE OF DISSOLVED CALCIUM AND MAGNESIUM ON POSTLARVAL GROWTH OF THE FRESHWATER SHRIMP MACROBRACHIUM ROSENBERGII.
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Name(s): HEINEN, JOHN MICHAEL, III
Florida Atlantic University, Degree Grantor
Type of Resource: text
Genre: Electronic Thesis Or Dissertation
Issuance: monographic
Date Issued: 1977
Publisher: Florida Atlantic University
Place of Publication: Boca Raton, Fla.
Physical Form: application/pdf
Extent: 43 p.
Language(s): English
Summary: 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.
Identifier: 13864 (digitool), FADT13864 (IID), fau:10692 (fedora)
Note(s): Thesis (M.S.)--Florida Atlantic University, 1977.
Subject(s): Macrobrachium rosenbergii
Shrimp culture
Held by: Florida Atlantic University Libraries
Persistent Link to This Record: http://purl.flvc.org/fcla/dt/13864
Sublocation: Digital Library
Use and Reproduction: Copyright © is held by the author with permission granted to Florida Atlantic University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.
Use and Reproduction: http://rightsstatements.org/vocab/InC/1.0/
Host Institution: FAU
Is Part of Series: Florida Atlantic University Digital Library Collections.