You are here
INFLUENCE OF DISSOLVED CALCIUM AND MAGNESIUM ON POSTLARVAL GROWTH OF THE FRESHWATER SHRIMP MACROBRACHIUM ROSENBERGII
- 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. |
![]() ![]() |
---|---|---|
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. |