GROWTH AND POPULATION STRUCTURE OF THE MUSSEL ANODONTA WOODIANA (LEA, 1834) (BIVALVIA, UNIONIDAE) IN THE HEATED KONIN LAKES SYSTEM
Siergiej A. Afanasjev*, Bogusław Zdanowski**, Andrzej Kraszewski**
*Institute of Hydrobiology, The Ukrainian Academy of Sciences in Kiev
** The Stanisław Sakowicz Inland Fisheries Institute in Olsztyn
ABSTRACT. The individual growth rate of the Chinese mussel population of the genus Anodonta which inhabits the warm channels of the heated Konin lakes system was analysed. Four size and age groups were distinguished. The allometric growth of shells during early developmental stages and the isometric growth of 6-21 cm shells were ascertained. Three to five years old individuals were typical of the Anodonta woodiana found in the Konin channels. The theoretical maximal life span of the mussels is 10 years, while the maximal shell length is 21 cm.
Key words: UNIONIDAE (ANODONTA), GROWTH, LAKES, CHANNELS, THERMAL POLLUTION