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ISSN: 2157-7579

Journal of Veterinary Science & Technology
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Research Article

Phenotypic and Genotypic Identification of Ticks Sampled from Wildlife Species in Selected Conservation Sites of Kenya

Carolyn Wanjira Muruthi1*, Olivia Wesula Lwande2, Joseph Njuguna Makumi1, Steven Runo1, Moses Otiende3 and Wycliffe Arika Makori1

1Department of Biochemistry and Biotechnology, Kenyatta University, Kenya

2Department of Clinical Microbiology, Virology, Umea University, Sweden

3Forensic and Genetics Laboratory, Veterinary Services Department, Kenya Wildlife Service, Kenya

*Corresponding Author:
Carolyn Wanjira Muruthi
Department of Biochemistry and Biotechnology
Kenyatta University, Kenya
Tel: +254 20 870
E-mail: [email protected]

Received date: December 14, 2015; Accepted date: January 08, 2016; Published date: January 11, 2016

Citation: Muruthi CW, Lwande OW, Makumi JN, Runo S, Otiende M, et al. (2016) Phenotypic and Genotypic Identification of Ticks Sampled from Wildlife Species in Selected Conservation Sites of Kenya. J Veterinar Sci Technol 7:293. doi:10.4172/2157-7579.1000293

Copyright: © 2016 Muruthi CW, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Hard ticks are blood feeding ectoparasites that infest humans and animals and are vectors of pathogenic microorganism that cause severe infectious diseases. Morphological identification has been the main approach of identifying ticks but the technique is considered inaccurate and difficult. Molecular techniques have recently been considered to be appropriate approaches for accurate and rapid identification and Internal Transcribed Spacer 2 (ITS 2) has been shown to differentiate genus of hard ticks. Currently, genetic identification of ticks using ITS 2 has not been carried out in Kenya. In this study, 80 tick samples were collected from Lake Nakuru and Tsavo National Parks and were identified morphologically using appropriate identification keys. DNA was extracted from the appendages using DNA extraction kit followed by partial amplification of ITS 2 gene. The PCR products were then analyzed by gel electrophoresis and positive PCR products were sequenced. Of the tick samples four genera were identified morphologically; Amblyomma, Hyalomma, Rhipicephalus and Dermacentor. Of the tick samples identified and compared with the sequences in the GenBank, six and seven samples showed 98-100% homology with A. variegatum and R. pulchellus respectively and they clustered in their respective monophyletic group in the phylogeny tree with a bootstrap of 99%. Two samples showed 92% homology with H. dromedarii and the study sequences clustered with the reference sequence with a bootstrap of 99% while six samples showed 95% homology with H. marginatum rufipes, however, only four of these samples clustered together with the reference sequence in the phylogeny with a bootstrap of 95%. One sample showed 91% homology with A. humerali and did not cluster together in the phylogeny tree. Congruency between both techniques was high with a correlation coefficient of 0.941. This is the first report of phenotypic and genotypic traits of tick species in Kenya and the findings will add value to the existing knowledge in identification of ticks.

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