Accession Number : AD0670351

Title :   LANDSCAPE DISTRIBUTION OF IXODID TICKS AND NATURAL FOCAL DISEASES IN UKRAINE,

Corporate Author : NAVAL MEDICAL RESEARCH UNIT NO 3 CAIRO (EGYPT) DEPT OF MEDICAL ZOOLOGY

Personal Author(s) : Emchuk, E. M.

Report Date : 1968

Pagination or Media Count : 3

Abstract : Ixodid ticks occupy a leading place among transmitters as hosts and vectors of agents of many natural focal diseases. They may serve as indices for determination of focus type, structure, and distributional range of infection. From records of tick distribution and epidemiological, epizootological, and serological data on natural focal diseases, it was established that in mixed-forest landscapes of USSR, where Ixodes ricinus and I. trianguliceps ticks are distributed, enzootic foci of tickborne encephalitis, hemorrhagic fevers, tularemia, listerellosis, and bovine babesiosis have been recorded. Elementary foci of these forest-type diseases are confined to more restricted biotopes, where mass reproduction of ticks and their hosts are localized. They are associated with sparse tree growths, forest margins, and cutover forest areas with shrub and grass vegetation. It is precisely in such biotopes that favourable conditions are formed for reproduction of insects, insectivorous animals, and murine rodents which attract small and large carnivores and birds. The population of I. ricinus is also dense in pastures near forests and foothills, intermountain valleys, and subalpine Carpathian meadows. (Author)

Descriptors :   (*TICKS, ECOLOGY), VIRUS DISEASES, DISEASE VECTORS, DISTRIBUTION, EPIDEMIOLOGY, USSR.

Subject Categories : Ecology
      Medicine and Medical Research

Distribution Statement : APPROVED FOR PUBLIC RELEASE