Experimental transmission of Theileria ovis by Hyalomma anatolicum anatolicum

Li, Youquan; Guan, Guiquan; Liu, Aihong; Peng, Yulv; Luo, Jianxun; Yin, Hong

doi:10.1007/s00436-010-1763-8

Cited by 21 publications

(5 citation statements)

References 28 publications

(25 reference statements)

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“…However, the present study provides the first evidence of the ability of infected nymphs of H. anatolicum to transmit T. lestoquardi infection. Similar results were recently provided for the transmission of T. ovis by nymphs of H. anatolicum in China (Li et al 2010).…”

Section: Larval-adult Transmission Of T Lestoquardisupporting

confidence: 82%

Experimental transmission of Theileria lestoquardi by developmental stages of Hyalomma anatolicum ticks

Taha

Elhussein²

2010

Parasitol Res

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Theileria-free Hyalomma anatolicum larvae were fed on a naturally infected sheep with Theileria lestoquardi. Resulting flat nymphs of the tick were able to transmit T. lestoquardi infection upon feeding to 3/3 susceptible sheep. Adults emerging from the same batch of larvae were also infective to 3/3 susceptible sheep when they had the infection during their larval feeding. Transmission of T. lestoquardi to sheep was confirmed through clinical monitoring, examination of blood and lymph node biopsy smears, serology using indirect immunoflourescent test, and molecular using polymerase chain reaction technique.

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Section: Larval-adult Transmission Of T Lestoquardisupporting

confidence: 82%

Experimental transmission of Theileria lestoquardi by developmental stages of Hyalomma anatolicum ticks

Taha

Elhussein²

2010

Parasitol Res

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“…There is no precise information about its tick vectors in Qinghai, which needs further study. Previous surveys demonstrated a high prevalence of subclinical infections in China, including Xinjiang (78%) [7] and inner Mongolia [51], and many other countries, such as Tunisian (16.3%) [52], Saudi Arabia (32, 48%) [53], Turkey (54.03%) [54], Iran (67.45%) [55], Ethiopia (91.9%) [56] and so on [57]. However, to our best knowledge, no study has recorded such a high prevalence in sheep.…”

Section: Tablementioning

confidence: 99%

The Common Occurrence of Theileria ovis in Tibetan Sheep and the First Report of Theileria sinensis in Yaks from Southern Qinghai, China

Wang

Zhang

et al. 2021

Acta Parasit.

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Purpose The tick-borne protozoa piroplasms, including Theileria and Babesia, are the cause of substantial economic losses to the livestock industry. However, in southern Qinghai province, China, there are limited information on the molecular characteristics of piroplasms. This study therefore aimed at determining the prevalence and genetic diversity of piroplasms. Methods In order to detect piroplasms, we examined 330 yaks and 236 Tibetan sheep blood samples by nested PCR. The differences in piroplasms prevalence in relation to different risk factors was analyzed using SPSS 26. Phylogenetic analysis based on 18S rRNA sequences was inferred using MEGA 7. Results During this study, Theileria spp. were detected in 33.6% (111/330) of yaks and 94.1% (222/236) of Tibetan sheep, but no Babesia was identified. Importantly, a comparison study revealed that T. ovis infection was highly prevalent in sheep (94.1%) but infrequent in yaks (6.1%), while T. sinensis was host-specific to yaks with an infection rate of 27.6%. In addition, male animals were more likely to be infected by T. sinensis and female animals were more likely to be infected by T. ovis. And animals below 4000 m areas reported a higher infection rate with T. sinensis (26.1% vs. 2.9%, p < 0.001). Alongside these differences in prevalence, we found a significantly higher T. sinensis infection rate in separated-grazing livestock (22.2% vs. 3.7%, p < 0.001), while mixed-grazing ruminants had a higher T. ovis infection rate (50.0% vs. 39.0%, p = 0.014). Furthermore, sequence analysis revealed that the 18S rRNA sequences obtained in this study shared 86.9-100.0% identities with each other and they were clustered into T. sinensis or T. ovis. Conclusion To our knowledge, this is the first report of T. sinensis in Qinghai region. In addition, high prevalence of the generally sub-clinical T. ovis in sheep indicates extensive exposure to ticks and transmission of tick-borne pathogens with a significant economic impact. This study provides insights into the distribution and genetic diversity of Theileria in China.

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“…and Rickettsia spp. ( Kar et al., 2011 ) T. lestoquardi ( Vashishta et al., 1987 ) H. anatolicum Theileria annulata ( Dhar et al., 1982 ; Lewis et al., 2005 ; Ica et al., 2007 ; Li et al., 2010 ) T. equi ( Bhattacharyulu et al., 1975 ; Li et al., 2010 ), T. lestoquardi ( Uilenberg, 1997 ; Kirvar et al., 1998 ; El-Azazy et al., 2001 ; Khalid and ElHussein, 2010 ), T. ovis ( Li et al., 2010 ) Babesia spp. ( Guan et al., 2009 ), Babesia U spp.…”

Section: Impact Of Hyalomma Ticks On Animalsmentioning

confidence: 99%

“…Similarly, different species of Theileria viz., T. annulata, T. lestoquardi, T. ovis, T. equi and T. camelensis are also transmitted by Hyalomma spp. (Geevarghese and Dhanda, 1987;Lewis et al, 2005;Li et al, 2010). These haemoprozoans have mild to severe impact on animal productivity.…”

Section: Impact Of Hyalomma Ticks On Animalsmentioning

confidence: 99%

A review on Hyalomma species infestations on human and animals and progress on management strategies

Kumar

Manjunathachar

Ghosh

2020

Heliyon

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The Hyalomma species of ticks have gained additional attention due to their role in the transmission of Theileria annulata infection in animals and the Crimean-Congo Haemorrhagic Fever (CCHF) virus in humans. Apart from these, many other pathogens viz., other species of Theileria, a few species of Babesia, Rickettsia and viruses are either maintained or transmitted by this tick species. The medium to large size species with longer proboscis has inflicted additional burden on the overall impact of tick infestations. Being a multi-host species, management of the species is very challenging. Presently, the traditional method of tick management using chemical acaricides is found insufficient and unsustainable. Henceforth, the overall burden of tick infestations and tick-borne diseases are increasing gradually. After the successful development of vaccines against cattle tick, Rhipicephalus microplus, the anti-Hyalomma vaccine is considered a feasible and sustainable management option. In the recent past research on herbal acaricides and its possible application for tick control seems promising. Other eco-friendly methods are still under experimental stage. The present review is focused on impact of Hyalomma species infestation on human and animal health with special emphasis on progress on its sustainable management.

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Experimental transmission of Theileria ovis by Hyalomma anatolicum anatolicum

Cited by 21 publications

References 28 publications

Experimental transmission of Theileria lestoquardi by developmental stages of Hyalomma anatolicum ticks

Experimental transmission of Theileria lestoquardi by developmental stages of Hyalomma anatolicum ticks

The Common Occurrence of Theileria ovis in Tibetan Sheep and the First Report of Theileria sinensis in Yaks from Southern Qinghai, China

A review on Hyalomma species infestations on human and animals and progress on management strategies

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