EN
24 live beavers were examined during the period from December 1986 to October 1987 at Popielno. 12 species of Acari (10 Schizocarpus, 2 Ixodes) and Platypsyllus castoris (Insecta, Coleoptera). Schizocarpus numerosus was the most frequent (21 beavers were infested), then S. brachyurus - 17 beavers infested. The rarest were S. capitis, which were noted only in two beavers.