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Prevalence of Anaplasma marginale in different tick species from Ngorongoro Crater, Tanzania


Fyumagwa, R D; Simmler, P; Meli, M L; Hoare, R; Hofmann-Lehmann, R; Lutz, H (2009). Prevalence of Anaplasma marginale in different tick species from Ngorongoro Crater, Tanzania. Veterinary Parasitology, 161(1-2):154-157.

Abstract

In 2001 Ngorongoro Crater was infested with high density of ticks on grassland, livestock and wildlife which was also associated with high mortality. Adult ticks were collected, identified, processed for nucleic acids extraction and a molecular analysis was performed to determine the range of tick species harboring Anaplasma marginale. The real-time PCR was used in the amplification of rickettsia DNA in tick pools (n=527) from 11 identified tick species. Six tick species were detected with A. marginale DNA including Amblyomma gemma, Rhipicephalus appendiculatus, R. compositus, R. decoloratus, R. praetextatus and R. pulchellus. The detection rate in each tick species was 3%, 0.7%, 2%, 13%, 1.8%, and 6.2% respectively. Five of the positive tick species excluding R. decoloratus have previously not been described to transmit A. marginale. High diversity of tick species detected with A. marginale in Ngorongoro Crater is likely to increase a risk to susceptible animals of contracting the infection.

In 2001 Ngorongoro Crater was infested with high density of ticks on grassland, livestock and wildlife which was also associated with high mortality. Adult ticks were collected, identified, processed for nucleic acids extraction and a molecular analysis was performed to determine the range of tick species harboring Anaplasma marginale. The real-time PCR was used in the amplification of rickettsia DNA in tick pools (n=527) from 11 identified tick species. Six tick species were detected with A. marginale DNA including Amblyomma gemma, Rhipicephalus appendiculatus, R. compositus, R. decoloratus, R. praetextatus and R. pulchellus. The detection rate in each tick species was 3%, 0.7%, 2%, 13%, 1.8%, and 6.2% respectively. Five of the positive tick species excluding R. decoloratus have previously not been described to transmit A. marginale. High diversity of tick species detected with A. marginale in Ngorongoro Crater is likely to increase a risk to susceptible animals of contracting the infection.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:05 Vetsuisse Faculty > Veterinary Clinic > Department of Farm Animals
Dewey Decimal Classification:570 Life sciences; biology
630 Agriculture
Language:English
Date:2009
Deposited On:26 Feb 2009 15:26
Last Modified:05 Apr 2016 12:52
Publisher:Elsevier
ISSN:0304-4017
Publisher DOI:10.1016/j.vetpar.2008.12.018
PubMed ID:19201099
Permanent URL: http://doi.org/10.5167/uzh-10968

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