Age, rate of growth and con[sup][/sup]dition of Vimba [i]Vimba vimba[/i] (L.) from the spawning part of population from the Rega river in 2004
Journal Title: Zeszyty Naukowe Uniwersytetu Przyrodniczego we Wrocławiu, Biologia i Hodowla Zwierząt - Year 2011, Vol 583, Issue 0
Abstract
The study was performed on 38 Vimba fish caught in May, 2004 in the Rega river. The parameters determined were weight and total length of individuals in this sample. By the commonly used methods the rate of increase in weight and length and general fish condition were estimated. Age analysis revealed 5 age groups from 5+ to 9+, while the greatest number of individuals represented the age groups 5+ and 6+ (78.95%). The highest rate of increase in length was observed in the first four years of age (annual growth reaches over 40 mm), later the increase was smaller. In comparison with the other populations the fish from the Rega river show a high rate of growth, only little lower than that established for the Vimba population from the Vistula river, studied in the middle of the 20[sup]th[/sup] century.
Authors and Affiliations
Mariusz Raczyński, Sławomir Keszka, Przemysław Czerniejewski
Keywords
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- EP ID EP98342
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