Metadata language
Effect of predators on Tubificidae groupings and their production in lakes
Subtitle:Effect of predators on tubificids
Creator: Contributor:Polska Akademia Nauk. Instytut Ekologii
Publisher: Place of publishing: Date issued/created: Description:Pages 493-512 : illustrations ; 24 cm ; Bibliographical references (pages 511-512) ; Abstract in Polish
Type of object: Subject and Keywords:lakes ; benthos ; Tubificidae ; predator-prey relationships ; body regeneration ; secondary production
Abstract:In experiments carried out in a natural habitat the Tubificidae that were attacked by fish and invertebrate predators were not usually eaten completely, but they only lost the posterior body part. Consequently, the effect observed was mainly a decrease in the average body weight and in the biomass of the Tubificidae, and to a lesser extent a reduction in their numbers. In the lakes of central and northern Poland, individuals were found whose bodies, having been dainaged by predators, were later on regenerating the parts lost. In the littoral, where their proportion was the largest, they represented up to 80% of all the Tubificidae. In laboratory investigations, the increase of the body during the regeneration of the parts lost was faster than during the normal growth. As a result, predation proved to be a factor stimulating the production of Tubificidae.
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Language: Language of abstract: Rights:Creative Commons Attribution BY 3.0 PL license
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Digitizing institution:Museum and Institute of Zoology of the Polish Academy of Sciences
Original in:Library of the Museum and Institute of Zoology of the Polish Academy of Sciences
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