Rotifer fecundity in relation to components of microbial food web in a eurotrophic reservoir

0150557 - HBU-Z 20033044 RIV NL eng J - Journal Article
Devetter, Miloslav - Seďa, Jaromír
Rotifer fecundity in relation to components of microbial food web in a eurotrophic reservoir.
Hydrobiologia. Roč. 504, - (2003), s. 167-175. ISSN 0018-8158. E-ISSN 1573-5117.
[Reservoir Limnology and Water Quality /4./. České Budějovice, 12.08.2002-16.08.2002]
Institutional research plan: CEZ:AV0Z6017912
Keywords : rotifers * microbial food web
Subject RIV: EH - Ecology, Behaviour
Impact factor: 0.720, year: 2003

The relationship among rotifers and their potential food sources such as bacteria, heterotrophic nanoflagelates and algae were examined in the eutrophic Římov reservoir. The egg ratio of five rotifer species (Polyarthra spp., Keratella cochlearis, K. quadrata, Kellicottia longispina and Synchaeta spp.) was estimated and related to the concentration of food particles. Generally, the highest egg ratio was found during the spring time, before the clear water phase, although the densities of some species reached their highest numbers in summer. All investigated food sources were found to have a significant relationship to rotifer egg ratio. The fecundity of all species, except Synchaeta, depend on chlorophyll-a. The two components of the microbial food web (bacterial carbon and HNF) were correlated with fecundity but only for K. cochlearis.
Permanent Link: http://hdl.handle.net/11104/0048087