Helminth parasites in the wood mouse (Apodemus sylvaticus) from Algeria

Helminth parasites of the wood mouse Apodemus sylvaticus (Rodentia, Murinae) were studied for the first time in Algeria. Fifty mice from Mizrana forest were examined in 2017. Our results showed a general prevalence of 82 % and a six species of helminths: four nematodes (Heligmosomoides polygyrus, Syphacia stroma, Syphacia frederici and Rictularia sp.) and two cestodes (Hymenolepis sp. and Hydatigera parva larvae). The most prevalent species was S. stroma (52.0 %), followed by S. frederici (46 %) and H. polygyrus (26 %). Infection rates in the analysed mice were higher in Nematoda (70 %) than in Cestoda (12 %). Host age was the most important factor determining the prevalence of helminth species, with adults being the most infected group. The differences were significant. No differences in prevalence were observed related to host sex or seasonality.