Age and growth of vendace, Coregonus albula (L.), from Lake Wigry (northeast Poland)      [RESEARCH ARTICLE]

Krzysztof Kozłowski; Jacek Kozłowski; Paweł Poczyczyński; Andrzej Martyniak

doi:10.2478/v10086-010-0027-7

Krzysztof Kozłowski
Jacek Kozłowski
Paweł Poczyczyński
Andrzej Martyniak

DOI: https://doi.org/10.2478/v10086-010-0027-7

Keywords: vendace, fish age, population dynamics, growth models

Abstract

The aim of the study was to determine the age and length growth rates of vendace, Coregonus albula (L.), from Lake Wigry (northeastern Poland). Fish were captured from 2001 to 2005 in the months of August and September. The most frequent age group in the catches was 2+, which comprised 53% of all fish caught. Growth was determined using Dahl-Lee and Rosa Lee back-calculation methods. These were the basis for calculating mathematical growth rate models. The growth that best corresponded with the empirical data was that calculated with a second-degree polynomial model based on Rosa Lee back-calculations. Fish aged 3+ were characterized by average length growth and attained a mean body length (SL) of 17.2 cm.

CORRESPONDING AUTHOR:

K. Kozłowski [+], J. Kozłowski, P. Poczyczyński, A. Martyniak
Department of Fish Biology and Pisciculture
University of Warmia and Mazury in Olsztyn, Poland
Oczapowskiego 5, 10 -719 Olsztyn, Poland
Tel. +48 89 5234941, e-mail: k.kozlowski@uwm.edu.pl