Studies on the zooplankton of a tropical fish pond

Seasonal abundance and the pattern of fluctuations in the zooplankton of a tropical fish pond has been studied at weekly intervals for a period of two years from September 1960 to August 1962. Except for a group of ciliates, protozoa were found only in limited numbers. Coleps, Tintinnus and Difflugi...

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Bibliographic Details
Published in:Hydrobiologia 1968-08, Vol.32 (1-2), p.47-68
Main Author: Michael, R. George
Format: Article
Language:English
Subjects:
Arcella
Centropyxis
Codonella
Coleps
Copepoda
Diaphanosoma brachyurum
Didinium
Difflugia
Freshwater
Mesocyclops hyalinus
Paradileptus
Rotifera
Stentor
Tintinnus
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Summary:Seasonal abundance and the pattern of fluctuations in the zooplankton of a tropical fish pond has been studied at weekly intervals for a period of two years from September 1960 to August 1962. Except for a group of ciliates, protozoa were found only in limited numbers. Coleps, Tintinnus and Difflugia were recorded during both the years, whereas Arcella and Codonella were collected in the first year only. Other members as Centropyxis, Didinium, Paradileptus, Stentor and Bursaria were seen occasionally as few individuals. The total numbers of protozoa showed their peak from January to April and the prevailing phytoplankton abundance and temperature conditions are suggested as probable causative factors. More than thirty species of rotifers were recorded during this study, although many of them were only in limited numbers. Loricate forms showed their maximum density in summer months only, when total alkalinity values were also high. Nonloricate forms were found during September, October and December to February. The effect of temperature, total alkalinity and phytoplankton on these populations have been discussed. Five species of Copepoda were recorded.
ISSN:0018-8158
1573-5117
DOI:10.1007/BF00179538