The Co-Occurrence of Demodecidae and Psorergatidae (Acariformes: Prostigmata) in the Yellow-Necked Field Mouse <i>Apodemus flavicollis</i> (Rodentia: Muridae) with a Description of Two New Species and a New Host Record
Karolina Cierocka | Joanna N. Izdebska | Leszek Rolbiecki
Mites from the Demodecidae and Psorergatidae can optimally use mammalian hosts by inhabiting a number of different microhabitats in their skin. Hence, in individual hosts, several species of parasites from these groups have been described in different microhabitats. There are few data on their co-occurrence either at the host species level or at the host individual level. Most research has addressed the co-occurrence of Demodecidae in carnivorans, ungulates, soricomorphs, and rodents, while the co-occurrence of both families was found in bats. The present study examines the possibility of their co-occurrence in a Eurasian rodent—<i>Apodemus flavicollis</i>. It is a suitable model for such analyses, because representatives of both families have been demonstrated here so far, and our findings extend the list of specific Demodecidae in <i>A. flavicollis</i> with two new species: <i>Demodex tenuis</i> sp. nov. from the lip region and <i>D. mediocris</i> sp. nov. from the chin region. The study also includes the first record of <i>Psorergates muricola</i> in this host, which occurred in the genital–anal region. Therefore, the findings confirm the possibility that different Demodecidae and Psorergatidae species can co-occur in the same host in different body regions. This paper also includes a checklist of Demodecidae and Psorergatidae in rodents around the world.
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