Rickettsia spp. in Five Tick Species Collected in Central California
| Autor: | Paul R. Crosbie, Tricia A. Van Laar, Cameron J Osborne, Steven E Loa, Alya J Wakeman-Hill |
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| Rok vydání: | 2019 |
| Předmět: |
Male
Ixodidae Rhipicephalus sanguineus 030231 tropical medicine Zoology Tick California 03 medical and health sciences 0302 clinical medicine parasitic diseases Animals Rickettsia Ornithodoros Phylogeny 030304 developmental biology 0303 health sciences General Veterinary biology Argasidae bacterial infections and mycoses biology.organism_classification Spotted fever Rhipicephalus Infectious Diseases Insect Science Ixodes pacificus Parasitology Female |
| Zdroj: | Journal of medical entomology. 57(5) |
| ISSN: | 1938-2928 |
| Popis: | Tick-borne disease surveillance in North America has long focused on Lyme disease, though there is currently a significant shift towards comprehensive pathogen surveillance in ticks. Central California has often been overlooked in regular tick-borne pathogen surveillance despite the presence of numerous medically important tick species. The bacterial genus Rickettsia contains tick-borne species that are known pathogens, such as those in the spotted fever group; nonpathogenic endosymbionts; and many species with unknown pathogenic potential. Five common tick species (Ixodes pacificus Cooley and Kohls [Acari: Ixodidae], Dermacentor occidentalis Marx [Acari: Ixodidae], D. variabilis Say, Rhipicephalus sanguineus Latreille [Acari: Ixodidae], and Ornithodoros parkeri Cooley [Acari: Argasidae]) of California were collected by both traditional and modern techniques, and subsequently screened for Rickettsia spp. Many individuals from all five tick species were PCR positive for Rickettsia spp., and a combination of species-specific primers, a restriction fragment length polymorphism assay, and DNA sequencing was used to further characterize the species composition in these ticks. Probable Rickettsia philipii (Rickettsia 364D) was detected in one (1.56%) D. occidentalis collected in Fresno County; R. rhipicephali was detected in 23.4% of D. occidentalis from Fresno Co.; R. bellii was detected in 88.2% of D. variabilis, 7.8% of D. occidentalis, and in one R. rhipicephalus (1.1%) from Fresno Co.; R. monacensis str. Humboldt was detected in three (100%) of I. pacificus collected in both Fresno and Madera Co.; and an uncharacterized Rickettsia was detected in (26.4%) of O. parkeri collected in both Fresno and Madera Co. The findings in this study highlight the need for ongoing surveillance in this region of California. |
| Databáze: | OpenAIRE |
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