Erika L. Walther

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Plasmodium (Novyella) homopolare, a newly described Plasmodium species, was found in a wide range of Passeriformes species in California, USA, and Colombia. This parasite infected more than 20 % of the sampled bird community (N = 399) in California and was found in 3.6 % of birds sampled (N = 493) in Colombia. Thus far, it has been confirmed in North and(More)
The role of vectors in the transmission of avian malaria parasites is currently understudied. Many studies that investigate parasite-vector relationships use limited trapping techniques and/or identify potential competent vectors in the field in such ways that cannot distinguish between an infected or infectious vector. Without the use of multiple trapping(More)
We studied avian haemosporidian parasites of the genera Plasmodium, Haemoproteus and Leucocytozoon in a riparian songbird community in Central California, USA, over a period of 2 years. We sequenced a well-characterized region of the mitochondrial cytochrome b gene to identify the prevalence and diversity of these parasites from 399 birds. Of the 39.8 % of(More)
Diurnal raptors in the order Accipitriformes are commonly parasitized with Leucocytozoon spp., and the prevalence and intensity of parasitemia are often high. However, for raptors in Falconiformes, several studies have reported relatively low prevalences (1 % or less) of Leucocytozoon spp. Leucocytozoon parasite pathogenicity has been documented in falcons,(More)
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