Effect of Pregnancy on Mercury Concentration in the Body of Free-living Small Rodents.

Relatively little information exists on the effects of mercury on terrestrial wildlife populations. We analyzed 38 free-living small rodent females (Myodes glareolus, Microtus agrestris, and Apodemus flavicolis), of which 11 were pregnant, for total mercury concentrations in combined liver and kidney samples. Using a single-purpose atomic absorption spectrometer for mercury determination, the measured mercury values ranged from 0.

Corrigendum: A revision of the trichostrongylid nematode Ransom, 1907, from deer game: recent integrative research confirms the existence of the ancient host-specific species (Rudolphi, 1809).

[This corrects the article DOI: 10.3389/fvets.2024.

A revision of the trichostrongylid nematode Ransom, 1907, from deer game: recent integrative research confirms the existence of the ancient host-specific species (Rudolphi, 1809).

The trichostrongylid roundworms of the genus , which are important in veterinary medicine, currently comprise 19 valid species that parasitize the small intestine of both free-living and domestic ruminants. Only four spp. have been reported in Europe, namely and .

The Tengmalm's owl (Aves, Strigidae) as the definitive host of sp. nov. (Apicomplexa).

Background: Owls have been reported as definitive hosts, whereas wild small mammals (naturally and experimentally) as intermediate hosts of several species of . Recently, dead fledglings were found infected by an unnamed species of since its intermediate host was unknown. After collecting additional samples of owls and wild small mammals, the present study focused on elucidating the identity, potential intermediate host, and complete life cycle of the found through experimentally infected rodents.

Significance of Intestinal Helminth Infection and Animal Sex for Mercury Concentrations in Two Rodent Species.

We compared the effects of animal gender, species, and intestinal helminth burden on mercury concentrations in rodents. Total mercury concentrations were determined in the liver and kidney tissues of 80 small rodents (44 yellow-necked mice, Apodemus flavicollis, and 36 bank voles, Myodes glareolus) captured in the Ore Mountains (northwest Bohemia, Czech Republic). Overall, 25/80 (32%) of animals were infected by intestinal helminths.