نتایج جستجو برای: dermanyssus gallinae
تعداد نتایج: 339 فیلتر نتایج به سال:
Trichomonas gallinae is a ubiquitous flagellated protozoan parasite, and the most common etiologic agent of epidemic trichomonosis in columbid and passerine species. In this study, free-ranging Pacific Coast band-tailed pigeons (Patagioenas fasciata monilis) in California (USA) were found to be infected with trichomonad protozoa that were genetically and morphologically distinct from T. gallina...
Trichomonas gallinae was present in 47% (57/121) of adult, 41% (7/17) of juvenile, and 29% (2/7) of nestling mourning doves (Zenaida ,nacroura) from Lincoln, Nebraska. Throat lesions were present in 5.9% (43/724) of the mourning doves trapped for banding. Two of four pigeons (Columba livia) possessed T. gallinae, but none contained throat lesions.
Among global changes induced by human activities, association of breakdown of geographical barriers and impoverishered biodiversity of agroecosystems may have a strong evolutionary impact on pest species. As a consequence of trade networks' expansion, secondary contacts between incipient species, if hybrid incompatibility is not yet reached, may result in hybrid swarms, even more when empty nic...
The present experimental results concern primarily the question, whether or not mosquitoes feeding on chickens having viremia, as a result of the bite of infected mites, can acquire the virus of St. Louis encephalitis and whether or not mosquitoes thus infected, can transmit the virus to chickens and hamsters. During the course of the investigation, 7 species of mosquitoes of 3 genera were infe...
A GCP-controlled, randomised and blind trial used 2 layer houses naturally infested with D. gallinae. One house with space for 23,000 hens was treated with an aqueous solution (2,000 ppm Phoxim, 25 ml/hen place) twice 7 days apart. The second house with space for 21,000 hens was not treated. For quantitative assessment of mite population, 20 cardboard traps per house were deployed onto the cage...
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