Determining the spring biomass peak of the smallest plankters in selected vendace lakes in Western Pomerania         [RESEARCH ARTICLE]

Józef Domagała; Łukasz Sługocki; Robert Czerniawski; Małgorzata Pilecka-Rapacz

doi:10.2478/aopf-2014-0031

Józef Domagała
Łukasz Sługocki
Robert Czerniawski
Małgorzata Pilecka-Rapacz

DOI: https://doi.org/10.2478/aopf-2014-0031

Keywords: vendace larvae, inland fisheries, nauplii, rotifers

Abstract

The aim of this study was to determine the prevalence peak of the smallest plankters that are an adequate food resource for vendace (Coregonus albula L.) larvae. This goal was accomplished by determining weekly changes in zooplankton biomass, especially rotifers and nauplii, against changes in basic physicochemical parameters of lake waters. As the results of this paper show, the highest abundance of the smallest plankters, rotifers and nauplii, occurs at a particular temperature for a period of two weeks. The most important variable that determined the peak of small plankter biomass is temperature. Thus, the period of stocking lakes with vendace larvae should be synchronized with this temperature and the coinciding biomass peak of rotifers and nauplii, which are the basic food of vendace larvae.

CORRESPONDING AUTHOR:

J. Domagała [+], Ł. Sługocki, R. Czerniawski, M. Pilecka-Rapacz
Department of General Zoology
Faculty of Biology
University of Szczecin, Poland
ul. Felczaka 3c, 71-412 Szczecin
e-mail: Jozef.Domagala@univ.szczecin.pl