Absence of Crimean-Congo haemorrhagic fever virus in the tick Hyalomma aegyptium parasitizing the spur-thighed tortoise (Testudo graeca) in Tunisia

Free-ranging spur-thighed tortoises Testudo graeca, captured in different habitat types of Northern Tunisia from March to April 2017, were examined for tick infestation: 134/147 (91%) were infested. The overall infestation intensity and abundance was 8.5 and 7.8, respectively. From these tortoises,...

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Main Authors: Fares Wasfi, Dachraoui Khalil, Najjar Chawki, Younsi Hend, Findlay-Wilson Stephen, Petretto Marie, Dowall Stuart, Hewson Roger, Zhioua Elyes
Format: Article
Language:English
Published: EDP Sciences 2019-01-01
Series:Parasite
Subjects:
Online Access:https://www.parasite-journal.org/articles/parasite/full_html/2019/01/parasite190051/parasite190051.html
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author Fares Wasfi
Dachraoui Khalil
Najjar Chawki
Younsi Hend
Findlay-Wilson Stephen
Petretto Marie
Dowall Stuart
Hewson Roger
Zhioua Elyes
author_facet Fares Wasfi
Dachraoui Khalil
Najjar Chawki
Younsi Hend
Findlay-Wilson Stephen
Petretto Marie
Dowall Stuart
Hewson Roger
Zhioua Elyes
author_sort Fares Wasfi
collection DOAJ
description Free-ranging spur-thighed tortoises Testudo graeca, captured in different habitat types of Northern Tunisia from March to April 2017, were examined for tick infestation: 134/147 (91%) were infested. The overall infestation intensity and abundance was 8.5 and 7.8, respectively. From these tortoises, 1174 ticks were collected, of which 10% (n = 120) taken from 18 randomly-selected tortoises were identified at the species level; the remaining ticks were examined for the presence of Crimean-Congo haemorrhagic fever virus (CCHFv) by real time RT-PCR. Only adult Hyalomma aegyptium were found, suggesting a high degree of host specificity to tortoises. No CCHFv was detected in ticks. Considering the absence of CCHFv in Hyalomma aegyptium infesting its main host, the spur-thighed tortoise, this tick species is unlikely to play a major role in the epidemiology of CCHF. Therefore, more studies are needed to investigate the circulation of this arbovirus between livestock and other tick species from North Africa.
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spelling doaj.art-1a974e56155d4b2d96d219d8155b787e2023-12-02T16:31:16ZengEDP SciencesParasite1776-10422019-01-01263510.1051/parasite/2019036parasite190051Absence of Crimean-Congo haemorrhagic fever virus in the tick Hyalomma aegyptium parasitizing the spur-thighed tortoise (Testudo graeca) in TunisiaFares WasfiDachraoui KhalilNajjar ChawkiYounsi HendFindlay-Wilson StephenPetretto MarieDowall StuartHewson RogerZhioua ElyesFree-ranging spur-thighed tortoises Testudo graeca, captured in different habitat types of Northern Tunisia from March to April 2017, were examined for tick infestation: 134/147 (91%) were infested. The overall infestation intensity and abundance was 8.5 and 7.8, respectively. From these tortoises, 1174 ticks were collected, of which 10% (n = 120) taken from 18 randomly-selected tortoises were identified at the species level; the remaining ticks were examined for the presence of Crimean-Congo haemorrhagic fever virus (CCHFv) by real time RT-PCR. Only adult Hyalomma aegyptium were found, suggesting a high degree of host specificity to tortoises. No CCHFv was detected in ticks. Considering the absence of CCHFv in Hyalomma aegyptium infesting its main host, the spur-thighed tortoise, this tick species is unlikely to play a major role in the epidemiology of CCHF. Therefore, more studies are needed to investigate the circulation of this arbovirus between livestock and other tick species from North Africa.https://www.parasite-journal.org/articles/parasite/full_html/2019/01/parasite190051/parasite190051.htmlCrimean-Congo haemorrhagic fever virusHyalomma aegyptiumTestudo graecaNorth Africa
spellingShingle Fares Wasfi
Dachraoui Khalil
Najjar Chawki
Younsi Hend
Findlay-Wilson Stephen
Petretto Marie
Dowall Stuart
Hewson Roger
Zhioua Elyes
Absence of Crimean-Congo haemorrhagic fever virus in the tick Hyalomma aegyptium parasitizing the spur-thighed tortoise (Testudo graeca) in Tunisia
Parasite
Crimean-Congo haemorrhagic fever virus
Hyalomma aegyptium
Testudo graeca
North Africa
title Absence of Crimean-Congo haemorrhagic fever virus in the tick Hyalomma aegyptium parasitizing the spur-thighed tortoise (Testudo graeca) in Tunisia
title_full Absence of Crimean-Congo haemorrhagic fever virus in the tick Hyalomma aegyptium parasitizing the spur-thighed tortoise (Testudo graeca) in Tunisia
title_fullStr Absence of Crimean-Congo haemorrhagic fever virus in the tick Hyalomma aegyptium parasitizing the spur-thighed tortoise (Testudo graeca) in Tunisia
title_full_unstemmed Absence of Crimean-Congo haemorrhagic fever virus in the tick Hyalomma aegyptium parasitizing the spur-thighed tortoise (Testudo graeca) in Tunisia
title_short Absence of Crimean-Congo haemorrhagic fever virus in the tick Hyalomma aegyptium parasitizing the spur-thighed tortoise (Testudo graeca) in Tunisia
title_sort absence of crimean congo haemorrhagic fever virus in the tick hyalomma aegyptium parasitizing the spur thighed tortoise testudo graeca in tunisia
topic Crimean-Congo haemorrhagic fever virus
Hyalomma aegyptium
Testudo graeca
North Africa
url https://www.parasite-journal.org/articles/parasite/full_html/2019/01/parasite190051/parasite190051.html
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