| [nematode and trematode fauna of the muskrat (ondatra zibethicus link, 1795) in lower saxony]. | from january 1995 to december 1995, 991 muskrats were examined for the occurrence and the regional prevalence of nematodes and trematodes. the muskrats were trapped in all parts of lower saxony. 77.2% of the studied population were less than one year old, 22.8% were older. the male to female ratio was 54.5% to 45.5%. one genus of nematodes, trichuris spp., was found in the colon in 1.9% of the animals in the south of the investigated area. a species differentiation was not possible, as exclusive ... | 1997 | 9451855 |