sites of attachment of 'prairie' and 'montane' dermacentor andersoni (acarina: ixodidae) on cattle. | | 1972 | 5036197 |
occurrence of colorado tick fever virus in dermacentor andersoni ticks in british columbia. | | 1968 | 5667781 |
increasing the paralyzing ability of a laboratory colony of dermacentor andersoni stiles. | field-collected rocky mountain wood ticks dermacentor andersoni stiles from british columbia caused limited paralysis in hamsters at high doses, but not at lower doses, while ticks collected from alberta failed to cause paralysis. this prompted development of a laboratory strain of ticks with a more consistent ability to cause paralysis. progeny of ticks that paralyzed a cow near walhachin, british columbia were reared and assayed for paralyzing ability. a high-virulence colony was selected for ... | 2003 | 12693847 |
difference of sites of attachment of dermacentor andersoni stiles to cattle in southeastern alberta and in south central british columbia, in relation to possible existence of genetically different strains of ticks. | | 1965 | 14328661 |
a canadian bison isolate of anaplasma marginale (rickettsiales: anaplasmataceae) is not transmissible by dermacentor andersoni (acari: ixodidae), whereas ticks from two canadian d. andersoni populations are competent vectors of a u.s. strain. | anaplasma marginale theiler is a tick-borne rickettsial pathogen of cattle with a global distribution in both temperate and tropical regions. the pathogen is endemic in regions within the united states, whereas the canadian cattle population is considered to be free ofa. marginale. farmed bison, bison bison l., in central saskatchewan have been found to be infected with a. marginale; however, there is no evidence of transmission from bison to cattle. we tested a saskatchewan bison isolate of a. ... | 2006 | 17017236 |
reproductive compatibility of prairie and montane populations of dermacentor andersoni. | genetic analysis of prairie and montane populations of dermacentor andersoni (stiles) originating from alberta (ab) and british columbia (bc), canada, respectively, indicated limited gene flow (nm <1) and a large amount of genetic differentiation (fst = 0.49) between the populations. the prairie population also had a greater level of genetic diversity. mating experiments indicated that females of geographically heterogeneous crosses had similar engorgement and oviposition failure as homogenous c ... | 2008 | 19058630 |