Thanks.

If you look into wild rodents, you will find all of them infested with more than one parasite. If you include helminth, protozoa and ectoparasites such as mites, ticks and lice you probably find more than 3 species in almost any rodent.

Definitely.

yes, everything is possoble :-)

For a wild animal, the “normal” situation is to have several species of parasites at the same time. The exceptional case is to have a single species of parasite!

See the attached paper: Intestinal helminths infection of rats (Rattus norvegicus) in the Belgrade Area (Serbia): The effect of sex, age and habitat, by Kataranovski M., Mirkov I., Belij S., Popov A., Petrović Z., Gačić Z. & Kataranovski D.

http://dx.doi.org/10.1051/parasite/2011182189

From page 193:

“Parasitism involving only one species was found in 51.7 % of the infected rats. Two species of parasites were found in 31.9 % of the infected rats, three species in 14.0 %, and four species in 2.4 %.”

This study included only helminths; if you add fleas and protozoa, it is clear that rats with a single species of parasite are exceptional.

Thank you!