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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Ref ID : 1443

Taavi Virro and Juta Haberman; The rotifers of Lake Peipus. Hydrobiologia 255/256:389-396, 1993

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In the northern part of Lake Peipus, 140 taxa of rotifers were identified, with species of Anuraeopsis, Conochilus, Keratella, Polyarthra and Synchaeta dominating. Two main periods of sexual reproduction occur, in the spring and autumn. Different life cycle patterns are represented. Rotifer number and biomass have two maxima between spring and early autumn. The contribution of rotifers to total zooplankton production varies from 13.6% (Oct.) to 89.8% (May). The average production of grazing rotifers is 485.1 kJ m-2, while that of predatory rotifers (Asplanchna) is 10.0 kJ m-2.