Miscellanea zoologica hungarica

Author(s): Kiss, I.
Title: Ecological studies on zooplankton species important for fish farms. II. Interspecific relations between zooplankton species
Year: 1987
Publication date: 1987-06-15
Volume: 4
Pages: 93-101.

Abstract: Some cases of competition and predation were examined in Rotatoria and Cladocera species providing the fish progeny with a basic natural food. In the Rotatoria breeds, Brachionus calyciflorus, which multiplies rapidly, appeared in the beginning, then reproduction of the consuming predator Asplanchna species commenced. It has been established that the Cladocera species are able to crowd out the Rotatoria species from the biocenosis of the progeny breeding ponds. There exists a competition for food between the two Cladocera species too, as a result of the more intensive filtering activity. In the case of Brachionus calyciflorus, in the presence of the predator Asplanchna species spine length increases, which means unambiguous protection for the adult animals, and also for most of the young ones.
Keywords: zooplankton breeds, population dynamics, competition, predation, cyclomorphosis

Journal: Miscellanea zoologica hungarica
Journal abbreviation: Miscnea zool. hung.
ISSN: 0230-9017
Publisher: Múzsák Közművelődési Kiadó, Budapest
Editor(s): Murai, É., Forró, L., Pintér, L. & Nemes, I.