Monitoring <i>Dermacentor reticulatus</i> Host-Seeking Activity in Natural Conditions
2020
Zając, Zbigniew | Bartosik, Katarzyna | Woźniak, Aneta
Ticks are hematophagous ectoparasites of humans and animals. These arthropods employ different strategies in their host-seeking activity; most often, it is the “nest”- and “pasture-questing” behaviour. Some species, e.g., <i>Dermacentor reticulatus</i>, exhibit both types of activity depending on their developmental stage. The aim of the present study was to investigate the host-seeking activity of adult <i>D. reticulatus</i> ticks in the eastern part of Poland. To this end, ticks were collected with the flagging method during their seasonal activity in three different types of habitat. Active specimens were marked with a permanent marker and then released. This was repeated consistently at 7-day intervals using a different colour of the marker each time, which allowed tracking the questing activity of the specimens. Most frequently, repetitive tick activity (repeated up to seven times) was noted in a locality surrounded by urban developments. In an agriculturally unused open meadow habitat, 69.9% of <i>D. reticulatus</i> ticks were found to undertake questing activity only once. <i>D. reticulatus</i> females proved to be more aggressive and determined to find a host than the males of this species. Adult <i>D. reticulatus</i> ticks are able to stay in the habitat for a long time and undertake multiple host-seeking activities. The greatest threat of attacks on animals, including domestic animals, and sporadically humans, by these ticks occurs in meadow habitats, which are preferred by this species.
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