THE DISTRIBUTION AND ABUNDANCE OF THE CHINESE MUSSEL ANODONTA WOODIANA (LEA, 1834) IN THE HEATED KONIN LAKES
Andrzej Kraszewski*, Bogusław Zdanowski**
*The Stanisł;aw Sakowicz Inland Fisheries Institute in Olsztyn, Poland
**University of Warmia and Mazury in Olsztyn, Poland
ABSTRACT. The Chinese mussel Anodonta woodiana was accidentally introduced into the heated Konin lakes system in the mid 1980’s. It inhabits the littoral of the five lakes of the complex, a preliminary cooling reservoir, and most of the discharge and inflow channels. It prefers habitats of an increased flow velocity and of rather high temperature. It has been found to be the dominant benthic species in most of the habitats. At times, its biomass exceeded 10 kg m-2, and it numbered more than 40 individuals per m2.
Key words: UNIONIDAE, DISTRIBUTION, ABUNDANCE, THERMAL POLLUTION