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EMERSON ANIMAL HOSPITAL
Thirty-Five Years Of Service And Over 385,000 Patients Treated!
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Office Hours: By Appointment | Monday -
Friday: 7:30 am to 5:30 pm
|| Saturday: 8:00
am to 12:00 pm (Noon) | Closed Sundays
| Our Mission : To offer the best in
modern veterinary care to Central Texas pets and their
families.
"Babesia odocoilei Vector" TITLE: Ixodes (Ixodes) scapularis (Acari:Ixodidae): redescription of all
active stages, distribution, hosts, geographical variation, and
medical and veterinary importance. AUTHORS: Keirans JE; Hutcheson HJ; Durden LA; Klompen JS AUTHOR AFFILIATION: Institute of Arthropodology and Parasitology, Georgia Southern
University, Statesboro 30460-8056, USA. SOURCE: J Med Entomol 1996 May;33(3):297-318 CITATION IDS: PMID: 8667375 UI: 96224490 ABSTRACT: |
The blacklegged tick, Ixodes
(Ixodes) scapularis Say, 1821, is redescribed, based on laboratory
reared specimens originating in Bulloch County, Georgia.
Information on distribution, host associations, morphological
variation, and medical/veterinary importance is also presented. A
great deal of recent work has focused on this species because it is
the principal vector of the agent of Lyme disease (Borrelia
burgdorferi Johnson, Schmidt, Hyde, Steigerwaldt & Brenner) in
eastern North America. Its distribution appears to be expanding,
and includes the state of Florida in the southeastern United States
north to the provinces of Nova Scotia and Prince Edward Island,
Canada, west to North and South Dakota, United States, and south to
the state of Coahuila, Mexico. Although I. scapularis feeds on at
least 125 species of North American vertebrates (54 mammalian, 57
avian, and 14 lizardspecies), analysis of the U.S. National Tick
Collection holdings show that white-tailed deer, Odocoileus
virginianus (Zimmermann), cattle, Bos taurus L., dogs, Canis lupus
L., and other medium-to-large sized mammals are important hosts for
adults as are native mice and other small mammals, certain
ground-frequenting birds, skinks, and glass lizards for nymphs and
larvae. |
 This tick is a polytypic
species exhibiting north-south and east-west morphological clines.
Analysis of variance and Student-Newman-Keuls multiple comparisons
revealed significant interpopulational variation that is expressed
most significantly in the nymphal stage. Nymphs from northern
(Minnesota, Massachusetts, Maryland) populations had relatively
larger basis capituli with shorter cornua (except Maryland) than
southern (North Carolina, Georgia) populations. Midwestern
populations (Minnesota, Missouri) differed from eastern populations
(Massachusetts, Maryland, North Carolina, Georgia) in idiosomal
characters (broader scuta, larger coxae III, and IV). In addition
to Lyme disease, this tick is also a primary vector of the agent of
human and rodent babesiosis, Babesia microti Franca. Under
laboratory conditions it has transmitted the agents of deer
babesiosis, Babesia odocoilei Emerson & Wright, tularemia,
Francisella tularensis McCoy & Chapin, and anaplasmosis,
Anaplasma marginale Theiler. Moreover, I. scapularis
can reach pest proportions on livestock, and females can cause tick
paralysis in dogs. |
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Emerson Animal Hospital |
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Phone: 254-772-3520 |
Toll Free: 1-877-840-0228 |
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419 Lake Air Drive
Waco, TX 76710
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