Journal
JOURNAL OF PARASITOLOGY
Volume 96, Issue 1, Pages 144-151Publisher
ALLEN PRESS INC
DOI: 10.1645/GE-2060.1
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Funding
- National Science Foundation [0608369]
- Sigma Delta Epsilon Hartley
- Sigma Xi
- American Ornithologists' Union
- Direct For Biological Sciences
- Division Of Environmental Biology [0608369] Funding Source: National Science Foundation
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Assessing parasite specificity to vector is crucial to understanding the emergence of vector-borne diseases and the evolution of parasite diversity. Avian malaria parasites have a cosmopolitan distribution and broad avian host range, which together predict they are vector generalists, but little is known about parasite vector associations in the wild. We tested this prediction by asking if 5 different mosquito species, known to feed on birds and abundant in the northeastern United States, were naturally infected in the field with identical avian Plasmodium spp. lineages. Mosquitoes were not pooled but rather analyzed individually, and, possibly as a result, lineage diversity was higher than reported in previous avian malaria vector studies. Plasmodium spp. lineages were rare in Aedes canadensis and absent in Aedes aurifer and Culiseta melanura. We sequenced a standard Plasmodium cytochrome h marker from Culex pipiens pipiens. Culex restuans, and Ae. canadensis. Most Plasmodium chides were shared by Cx. pipiens and Cx. restuans. In addition, 4 individual lineages were shared by both mosquito species, including the most common lineage. One Plasmodium clade, however, was only found in Cx. restuans. We therefore found limited support for our prediction that avian Plasmodium spp. vector breadth accompanies host breadth. The association of both Culex species with most Plasmodium chides, and the presence of a single parasite lineage in 3 mosquito species representing 2 genera, suggests that avian Plasmodium species are not tightly coevolved with vector species.
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