Seasonal dynamic of phototrophic epibionts on crustacean zooplankton in a eutrophic reservoir with cyanobacterial bloom

Seasonality of burden and prevalence of phototrophic (microalgal) epibionts Characidiopsis ellipsoidea, Colacium vesiculosum and Colacium sp. on dominating crustacean zooplankton (Daphnia longispina, Cyclops vicinus and Mesocyclops leuckarti) were studied in a small reservoir Bugach with cyanobacter...

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Bibliographic Details
Published in:Aquatic ecology 2005-06, Vol.39 (2), p.167-180
Main Authors: Dubovskaya, Olga P., Klimova, Elena P., Kolmakov, Vladimir I., Gaevsky, Nikolai A., Ivanova, Elena A.
Format: Article
Language:English
Subjects:
Abiotic factors
Characidiopsis
Cladocera
Colacium
Colacium vesiculosum
Crustaceans
Cyclops vicinus
Daphnia longispina
Eutrophication
Freshwater
Mesocyclops leuckarti
Mortality
Reservoirs
Seasonal variations
Zooplankton
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Summary:Seasonality of burden and prevalence of phototrophic (microalgal) epibionts Characidiopsis ellipsoidea, Colacium vesiculosum and Colacium sp. on dominating crustacean zooplankton (Daphnia longispina, Cyclops vicinus and Mesocyclops leuckarti) were studied in a small reservoir Bugach with cyanobacterial bloom. The correlations between the seasonal dynamics of prevalence and the dynamics of others biotic and abiotic factors were calculated. The conclusions were as follows. The substrate species, that determined the development of the epibionts on the three studied crustacean zooplankton, was Daphnia longispina (Cladocera). Despite intensive epibiotic infestation of crustacean zooplankton, epibionts did not appear to have caused non-consumptive mortality of the crustacean zooplankton. But they could have contributed to the Daphnia summer decline by increasing mortality due to its consumption by planktivorous fishes. The phototropic epibionts may successfully coexist with cyanobacterial bloom. The possible role of the epibionts in changing nutrient fluxes in pelagic food web is discussed.[PUBLICATION ABSTRACT]
ISSN:1386-2588
1573-5125
DOI:10.1007/s10452-004-5001-2