Evidence for transovarial transmission of tick-borne rickettsiae circulating in Northern Mongolia

Potential significance of transovarial transmission in the circulation of tick-borne encephalitis virus.

Transovarial transmission of tick-borne encephalitis (TBE) virus in Ixodes ricinus (L., 1758), its vector tick species, has been shown both experimentally and epidemiologically to be one of the important modes of long-term virus circulation in a natural focus (Benda R. 1958: J. Hyg. Epidemiol. Microbiol. Immunol. (Prague) 2: 314-330; Řeháček J. 1962: Acta Virol. 6: 220-226; Danielová V., Holubo...

Tick-borne Ehrlichiae and Rickettsiae of Dogs (2-May-2003)

Introduction Over the past several decades, tick-borne diseases caused by obligate intracellular bacteria have emerged as important threats to mammals worldwide, and have gained notoriety because of growing concern that changing climate conditions may favor vector-borne disease transmission. Canids not only become clinically affected with specific ehrlichiae and rickettsiae, but may also serve ...

Tick-Borne Transmission of Murine Gammaherpesvirus 68

Herpesviruses are a large group of DNA viruses infecting mainly vertebrates. Murine gammaherpesvirus 68 (MHV68) is often used as a model in studies of the pathogenesis of clinically important human gammaherpesviruses such as Epstein-Barr virus and Kaposi's sarcoma-associated herpesvirus. This rodent virus appears to be geographically widespread; however, its natural transmission cycle is unknow...

Infection and Transovarial Transmission of Rickettsiae in Dermacentor variabilis Acquired by Artificial Feeding

Infection and transovarial transmission of rickettsiae in Dermacentor variabilis ticks acquired by artificial feeding.

In this study we examined the efficiency of an in vitro feeding technique using glass microcapillaries as a method of establishing rickettsiae-infected lines of ticks. To quantify the volume ingested by ticks during microcapillary feeding, the incorporation of radiolabeled amino acids in tick gut and hemolymph was calculated. Fifteen of 18 ticks consumed between 0.06 and 6.77 microl. However, i...