Diversity and distribution of ectoparasite taxa associated with Micaelamys namaquensis (Rodentia: Muridae), an opportunistic commensal rodent species in South Africa
Stevens L., Stekolnikov A.A., Ueckermann E.A., Horak I.G., Matthee S.
Parasitology, 149: 1229–1248 (2022).
S U M M A R Y
South Africa boasts a rich diversity of small mammals of which several are commensal and harbour parasites of zoonotic importance.
However, limited information is available on the parasite diversity and distribution associated with rodents in South Africa.
This is particularly relevant for Micaelamys namaquensis (Namaqua rock mouse), a regionally widespread and locally abundant species
that is often commensal. To address the paucity of data, the aims of the study was to record the ectoparasite diversity associated with
M. namaquensis and develop distribution maps of lice and mites associated with M. namaquensis and other rodents in South Africa. Micaelamys
namaquensis individuals (n = 216) were obtained from 12 localities representing multiple biomes during 2017 – 2018. A total of 5591 ectoparasites
representing five taxonomic groups: fleas, lice, mesostigmatid mites, chiggers and ticks were recorded. These consisted of at least 57 taxa of which
ticks were the most speciose (20 taxa). Novel contributions include new host and locality data for several ectoparasite taxa and undescribed chigger species.
Known vector species were recorded which included fleas (Ctenocephalides felis, Dinopsyllus ellobius and Xenopsylla brasiliensis) and ticks
(Haemaphysalis elliptica, Rhipicephalus appendiculatus and Rhipicephalus simus). Locality records indicate within-taxon geographic differences
between the two louse species and the two most abundant mite species. It is clear that M. namaquensis hosts a rich diversity of ectoparasite taxa
and, as such, is an important rodent species to monitor in habitats where it occurs in close proximity to humans and domestic animals.