Nauka Przyroda Technologie

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Antoni Przybył, Jan Mazurkiewicz, Janusz Golski, Wojciech Andrzejewski
Biological characteristics of the fished population of vendace (Coregonus albula L.) from the Winnogóra lake (Międzychód district)
Summary.

The objective of studies carried out in 2003 was the investigation of the most important biological and morphometrical features of the fished population of vendace from the Winnogóra lake lying in the Międzychód-Sieraków Lakeland. The following features were studied: sex structure, growth rate, fish condition, fertility, as well as biometric and meristic features of the studied vendace. At the same time, the most important physicochemical water indices were determined permitting to characterise the environmental conditions. The lake water (on the basis of seven physicochemical indices) can be classified to the 2nd purity class. However, it has been found that in the summer season, the hypolimnion is almost completely deoxidized. Vendace from the studied lake belongs to a group with a medium growth reaching in the third year of life the mean total length of 0.90 cm. Fulton’s index of fish condition oscillated from 0.69 to 1.27 with a mean value of 0.90. The mean absolute fertility was 9184.6 eggs, while the relative fertility was 7750.26 eggs per 100 g of body mass. Considering the measurable features, the fish population of the Winnogóra lake differs significantly regarding the highest and the lowest body height from the populations with a medium growth described by Bernatowicz. The countable features of the studied population do not significantly deviate from the values reported by other researchers, except for the filtration processes.

Key words: vendace (Coregonus albula L.), eutrophization, growth rate, condition, population features
PDFFull text available in English in Adobe Acrobat format:
http://www.npt.up-poznan.net/tom4/zeszyt3/art_32.pdf

For citation:

MLA Przybył, Antoni, et al. "Biological characteristics of the fished population of vendace (Coregonus albula L.) from the Winnogóra lake (Międzychód district)." Nauka Przyr. Technol. 4.3 (2010): #32.
APA Antoni Przybył, Jan Mazurkiewicz, Janusz Golski, Wojciech Andrzejewski (2010). Biological characteristics of the fished population of vendace (Coregonus albula L.) from the Winnogóra lake (Międzychód district). Nauka Przyr. Technol. 4 (3), #32
ISO 690 PRZYBYł, Antoni, et al. Biological characteristics of the fished population of vendace (Coregonus albula L.) from the Winnogóra lake (Międzychód district). Nauka Przyr. Technol., 2010, 4.3: #32.
Corresponding address:
Antoni Przybył
Instytut Zoologii
Uniwersytet Przyrodniczy w Poznaniu
ul. Wojska Polskiego
71 C
60-625 Poznań
Poland

e-mail: golski@up.poznan.pl
Accepted for print: 5.03.2010