Dermacentor reticulatus biorhythms in the Northern Forest-Steppe of the Tyumen Region

Abstract

Toforecast thenumberof ticks and take successful measures for decreasingthemin population it is necessary to know the features of their phenology in aparticular region. The majority of acarologists pays attention to the features of Ixodes persulcatus'activity as they transmitixodic infections. The proved epizootic and epidemiological importance of Dermacentors dictates the necessity of developing and organizing the comprehensive control system against this specie of ticks toprevent diseases.This demand the fullest and comprehensive studying of ecology and phenology features of Dermacentor reticulatus of a particular region. The aim of the research isthe detailed studying of bioecology of Dermacentor reticulatus ticks, the most widespread ticks in the Tyumen region. We had monitoredover thelife cycle features of Dermacentor reticulates in natural biotopes over the 2013 to 2014 period in the subzone of the northern forest-steppe of the Tyumen region. In natural climatic conditions of the specified climatic zone Dermacentor reticulatus are capable to give one generation per a parasitizing season ifparasite juvenile forms meet feeders. The whole process of reproduction from egg up to theadult specimen emerge took from 69 to 161 days, and averagely 115±1,99 full days. Metamorphosis of larvae had taken the shortest time period (29,1±2,0 full days or 25,3% of all cycle time), nymph and imago formations had happened practically for equal periods of 34,5±2,3 and 37,0±5,0 full days respectively. Having studied the regularities of the Dermacentor reticulates life cycles we can prove the emergence and the activity peaks of both juvenile, and adult phases of these ticks activity. That allows to plan actions oncontrolling these parasites in places of their dwelling.

The density and peaks of seasonal activity of Dermacentor reticulatus ticks in eastern Poland

“…The dynamics and size of the D. reticulatus population, as in the case of other hard ticks, depend on many biotic and abiotic factors. The most important include the presence of potential hosts, ecological type of occupied habitats, climatic factors, photoperiod, excreted semiochemical substances and hormones controlling the rhythms of seasonal activity, diapause periods, and biology of tick reproduction and development [13,39,45,46].…”

Participation of Dermacentor Reticulatus Imago in the Reservation of Bovine Leukemia Virus

“…Considering that about half of all cattle are still grazed on pastures where blood-sucking insects and ticks are widespread in the warm season, it is impossible to underestimate their role in the circulation of infectious diseases, including bovine leukemia. In the Tyumen region of the Russian Federation, three species of ixodid ticks are common, among which D. reticulatus (46.0±5.0%) and I. persulcatus (44.6±6.8%) are the most common ones and D. marginatus (9.4±3.3%) is found in steppe areas (Glazunov and Glazunova, 2018a, 2018bGlazunov et al, 2021).…”