DESIGNATION AND FREEZING RESISTANCE OF ISOLATES OF TRICHINELLA SPIRALIS FROM WILD CARNIVORES

Abstract

A system to designate and define isolates of T. spiralis is proposed. The designation gives the host from which the isolate was recovered, geographic origin and year of recovery. Isolates of T. spiralis recovered from frozen muscles from 4 species of wild carnivores had low and different infectivity to laboratory mice. Viable larvae of T. spiralis were obtained from muscle samples of marten, wolverine, polar bear and arctic fox which had been frozen for 5, 6, 12 and 14 mo. respectively.