Hybridization in ticks has been described in a handful of species and mostly as a result of laboratory experiments. We used 148 AFLP loci to describe putative hybridization events between D. andersoni and D. variabilis in sympatric populations from northwestern North America. Recently, D. variabilis has expanded its range westward into the natural range of D. andersoni. Using a sample of 235 D....

Cryptosporidium spp. and Enterocytozoon bieneusi (E. bieneusi) are two common opportunistic pathogens that can infect humans animals worldwide. The available data on the prevalence of these is insufficient in Hebei Province, China, which located Bohai Sea region. In present study, 718 fecal specimens native beef cattle from eight farms Province were examined for presence E. using nested PCR tar...

The microbial diversity of wastewater used for irrigation and fertilization was assessed using specific polymerase chain reaction (PCR) assays to detect and genotype several pathogenic protists including Cryptosporidium spp., Giardia duodenalis, Cyclospora spp., Eimeria spp. and Enterocytozoon bieneusi. A total of 220 wastewater samples (110 raw, 110 treated) and 12 sludge samples were collecte...

The aims of this study were to verify the prevalence of Cryptosporidium spp. and Giardia spp. in animal feces and drinking water on dairy farms and to identify a possible relation between the exposure factors and the presence of these parasites. Fecal samples from cattle and humans and water samples were collected on dairy farms in Paraná, Brazil. Analysis of (oo)cysts in the feces was performe...

In this study, we examined the prevalence and molecular characteristics of Cryptosporidium in buffalo, dairy cattle and sheep in different farms at Kafr El Sheikh Province, Egypt. Rectal fecal samples, including 466 samples from buffalo, 1697 from cattle and 120 from sheep, were collected from different ages and screened by modified Ziehl-Neelsen acid-fast microscopy for detection of Cryptospor...

The human-biting adult stage of the Rocky Mountain wood tick (Dermacentor andersoni) can cause tick paralysis in humans and domestic animals and is the primary tick vector in the intermountain west of the pathogens causing Colorado tick fever, Rocky Mountain spotted fever, and tularemia. We conducted drag sampling studies in Poudre Canyon and Rocky Mountain National Park of Larimer County, CO, ...

AnaplasmamarginaleTheiler is a tick-bornepathogen that causes anaplasmosis incattle. There are 20 tick species worldwide that are implicated as vectors of this pathogen. In the United States, Dermacentor andersoni Stiles and Dermacentor variabilis (Say) are the principal vectors. The risk of transmission of anaplasmosis to cattle has been largely based on the distribution ofD. andersoni in the ...

rfr HE apicomplexan parasite Cryptosporidium sp. causes gasI trointestinal infections in a wide range of verüebrate hosts, including humans (Fayeq Morgan, and Upton 20OOa; Xiao et al2664¡. Three species of Cryptosporidi¡zrn infect cattle: C. parvum; C. andersoni, an.d C. bovis (Fayer, Santín, and Xiao 2005; Lindsay et al. 2000). Cryptosporüium powum infects the small intestine, primarily of pre...