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An avian contribution to the presence of Ixodes pacificus
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georgia
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Joined: 06 May 2005
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PostPosted: Sat Apr 29, 2006 2:28 am    Post subject: An avian contribution to the presence of Ixodes pacificus Reply with quote

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?CMD=search&DB=pubmed

J Med Entomol. 2006 Mar;43(2):368-74.

An avian contribution to the presence of Ixodes pacificus (Acari:
Ixodidae) and Borrelia burgdorferi on the sutter buttes of California.

Wright SA, Lemenager DA, Tucker JR, Armijos MV, Yamamoto SA.

Sacramento-Yolo Mosquito and Vector Control District, 8631 Bond
Rd.,
Elk Grove, CA 95624, USA.

Birds from 45 species were sampled during three spring seasons from

an isolated canyon on the Sutter Buttes in California for the presence
of subadult stages of Ixodes pacificus Cooley & Kohls, and for
infection
with Borrelia burgdorferi Johnson, Schmid, Hyde, Steigerwalt & Brenner.

These birds were found to have an infestation prevalence of 45%, a
density of 1.7 ticks per bird, and an intensity of 3.8 ticks per
infested bird. There was a significant difference in the I. pacificus
infestations between canopy and ground-dwelling birds. Birds also
demonstrated an overall infection with B. burgdorferi of 6.4% with
significant difference between bird species. Amplification and
subsequent sequencing of the 23s-5s rRNA intergenic spacer region of
the
Borrelia genome from one bird, a hermit thrush, Catharus guttatus
(Nuttall), showed that the infection in this bird was caused by B.
burgdorferi sensu stricto; the first such finding in a bird from the
far
west.
Our results suggest that birds play a role in the distribution and
maintenance of I. pacificus, and possibly of B. burgdoferi, at the
Sutter Buttes, CA.

PMID: 16619623 [PubMed - in process]
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