Infestation rates, seasonal distribution, and genetic diversity of ixodid ticks from livestock of various origins in two markets of Yaoundé, Cameroon

Sado Yousseu, Francine, Simo Tchetgna, Huguette, Kamgang, Basile, Djonabaye, Doumani, McCall, Philip ORCID: https://orcid.org/0000-0002-0007-3985, Ndip, Roland Ndip and Wondji, Charles ORCID: https://orcid.org/0000-0003-0791-3673 (2022) 'Infestation rates, seasonal distribution, and genetic diversity of ixodid ticks from livestock of various origins in two markets of Yaoundé, Cameroon'. Medical and Veterinary Entomology, Vol 36, Issue 3, pp. 283-300.

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Abstract

Little is known about the impact of ticks on livestock and humans in Cameroon. This study aimed to determine the prevalence, seasonal variation, and genetic diversity of hard ticks in the country. Ticks were collected during a cross‐sectional survey on domestic livestock in two markets of Yaoundé in 2019 and 2020 and identified using morphological keys, 16S ribosomal DNA, (16S rDNA), and the cytochrome c oxidase subunit 1 (Cox1) genes. The infestation rates were 39.18%, 11.53%, and 2.74% in cattle, sheep, and goats respectively. Three genera of ticks were identified, Rhipicephalus, Amblyomma, and Hyalomma comprising eleven tick species. The main species were Rhipicephalus decoloratus (30.25%), R. microplus (24.43%), and Amblyomma variegatum (12.96%). Rhipicephalus spp. (81.31%) and Amblyomma variegatum (51.54%) were abundant during the rainy season, while Hyalomma spp. (83.86%) during the dry season (p‐value <0.00001). Cox1 and 16S rDNA analysis showed a high level of genetic diversity among tick species with sequences close to those observed across Africa. Phylogenetic analysis revealed that our R. microplus belong to clade A and we identified R. sanguineus s.l. as R. linnea. This study shows a high tick infestation rate in cattle, while low in small ruminants with an extensive diversity of tick species, including several known vectors of important tick‐borne diseases.

Item Type:	Article
Additional Information:	This article also appears in: Special Issue: Sustainable Vector Biology Research Systems in Africa
Subjects:	QU Biochemistry > Genetics > QU 500 Genetic phenomena QX Parasitology > QX 20 Research (General) QX Parasitology > Arthropods > QX 479 Ticks QX Parasitology > Insects. Other Parasites > QX 600 Insect control. Tick control WC Communicable Diseases > Rickettsiaceae Infections. Chlamydiaceae Infections > WC 600 Rickettsiaceae infections. Chlamydiaceae infections. Tick-borne diseases
Faculty: Department:	Biological Sciences > Vector Biology Department
Digital Object Identifer (DOI):	https://doi.org/10.1111/mve.12589
SWORD Depositor:	JISC Pubrouter
Depositing User:	JISC Pubrouter
Date Deposited:	23 Aug 2022 13:38
Last Modified:	13 Jun 2023 15:19
URI:	https://archive.lstmed.ac.uk/id/eprint/20520

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