Allochronic seasonal peak activities of Dermacentor and Haemaphysalis spp. under continental climate in Hungary
2009
Hornok, Sándor
Hard ticks (Acari: Ixodidae) were collected from the vegetation at monthly intervals in 2008 on six places of three different biotopes in Hungary. Except for Haemaphysalis concinna and H. punctata, predominance of females was observed in the questing population. From among the species with biphasic activity period, metastriate ticks (Dermacentor spp. and H. inermis) had higher prevalence of host-seeking males in the autumn than in the spring, as opposed to prostriate Ixodes ricinus. In comparison with the permanently mild weather experienced at the beginning of 2007, sharply rising temperatures during consecutive winter days in January and February of 2008 appeared to be more efficient in triggering a 1-2 month earlier spring peak activity of hard ticks, except for I. ricinus. Regarding seasonality, D. marginatus was most numerous in February and March, whereas D. reticulatus in September and October; H. punctata showed peak activity in March-April, H. concinna in May, and H. inermis in November-December. Within these genera such a temporal difference (allochrony) between seasonal peak activities of sympatric species under continental climate is described for the first time.
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