Life cycle of the camel tick Hyalomma dromedarii (Acari: Ixodidae) under field conditions in Northern Sudan

ELGhali, A.; Hassan, S.M.

doi:10.1016/j.vetpar.2010.08.028

Cited by 19 publications

(25 citation statements)

References 16 publications

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“…(5.6%, 11/186) found supports our pilot study on the reported low prevalence of canine vector-borne diseases in Saudi Arabia. While the principal host of Hyalomma dromedarii is commonly dromedary camels, we have demonstrated the presence of H. dromedarii on free-roaming dogs which share the same environment as the camels (Hoogstraal et al 1981, Elghali and Hassan 2010, Abdel-Shafy et al 2012. To our knowledge, this is the first study that confirms the frequent presence of H. dromedarii on dogs.…”

Section: Discussionmentioning

confidence: 85%

“…We have shown that H. dromedarii is the most common tick parasitising dogs in the region. The principal host species are camels, but H. dromedarii is known to parasitise other ungulates (Kaiser and Hoogstraal 1963, 1964, Hoogstraal et al 1981, Apanaskevich and Horak 2010, Elghali and Hassan 2010. Domestic and wild ungulates, especially cattle, are frequently reported as the common host species for H. rufipes, H. turanicum and H. impeltatum.…”

Section: Discussionmentioning

confidence: 99%

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Rhipicephalus sanguineus sensu lato from dogs and dromedary camels in Riyadh, Saudi Arabia: low prevalence of vector-borne pathogens in dogs detected using multiplexed tandem PCR panel

Chandra¹,

Smith²,

Alanazi³

et al. 2019

FOLIA PARASIT

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Despite the global distribution of the brown dog tick, Rhipicephalus sanguineus (Latreille, 1806) sensu lato (s.l.), limited information exists about their identity from the Arabian Peninsula. Ticks from free roaming urban dogs and dromedary camels in Riyadh, Saudi Arabia were morphologically identified, confirmed with scanning electron microscopy and characterised at mitochondrial DNA (cox1, 12S rDNA and 16S rDNA). A total of 186 ticks were collected from 65 free roaming dogs (n = 73) and 84 dromedary camels (n = 113). Morphologically, 5.9% (11/186) were R. sanguineus s.l. and Hyalomma spp. (93.5%, 174/186). From within R. sanguineus s.l., the presence of Rhipicephalus cf. camicasi Morel, Mouchet et Rodhain, 1976 (1 dog, 2 camels) and Rhipicephalus turanicus Pomerantsev, 1936 (1 camel) is reported. The examined R. cf. camicasi form a sister group to R. sanguineus s.l. tropical lineage at all DNA markers. Dogs were parasitised by Hyalomma dromedarii Koch, 1844 (n = 59), Hyalomma impeltatum Schulze et Schlottke, 1930 (n = 1), Hyalomma excavatum Koch, 1844 (n = 2), Hyalomma turanicum Pomerantsev, 1946 (n = 1) and Hyalomma rufipes Koch,1844 (n = 1). DNA from dog blood (n = 53) from Riyadh confirmed a low prevalence of canine vector-borne pathogens that does not exceed 5.7% for Babesia spp., Mycoplasma spp., Anaplasma platys, Hepatozoon canis and Ehrlichia canis using multiplexed tandem PCR (MT-PCR) and diagnostic PCR. Low prevalence of R. sanguineus s.l. on dogs likely contributed to the low level of canine vector-borne pathogens in Saudi Arabia. We demonstrate that dogs in the central Arabian Peninsula are more commonly parasitised by Hyalomma spp. than R. sanguineus s.l.

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Section: Discussionmentioning

confidence: 85%

Section: Discussionmentioning

confidence: 99%

Rhipicephalus sanguineus sensu lato from dogs and dromedary camels in Riyadh, Saudi Arabia: low prevalence of vector-borne pathogens in dogs detected using multiplexed tandem PCR panel

Chandra¹,

Smith²,

Alanazi³

et al. 2019

FOLIA PARASIT

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“…Within a suitable range, higher temperatures shorten tick development periods, raise egg productivity and hatch-ratios, and promote biting behaviors 25 26 27 . Increasing rainfall and air humidity would lead to more breeding sites in luxuriant shrub or forest areas, and would hence increase the population size of the ticks 24 28 29 . Climate can also affect viral replication and transmission, host animal behaviors, and human outdoor exposures 27 28 29 .…”

Section: Discussionmentioning

confidence: 99%

“…Increasing rainfall and air humidity would lead to more breeding sites in luxuriant shrub or forest areas, and would hence increase the population size of the ticks 24 28 29 . Climate can also affect viral replication and transmission, host animal behaviors, and human outdoor exposures 27 28 29 . However, climate effects need not to be linear, for example, extreme temperatures can adversely affect the geographic distribution of ticks and suppress viral activity.…”

Section: Discussionmentioning

confidence: 99%

A National Assessment of the Epidemiology of Severe Fever with Thrombocytopenia Syndrome, China

Liu

Zhou

Sun

et al. 2015

Sci Rep

107

126

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First discovered in rural areas of middle-eastern China in 2009, severe fever with thrombocytopenia syndrome (SFTS) is an emerging tick-borne zoonosis affecting hundreds of cases reported in China each year. Using the national surveillance data from 2010 to 2013, we conducted this retrospective epidemiological study and risk assessment of SFTS in China. We found that the incidence of SFTS and its epidemic areas are continuing to grow, but the case fatality rate (CFR) has steadily decreased. SFTS most commonly affected elderly farmers who acquired infection between May and July in middle-eastern China. However, other epidemiological characteristics such as incidence, sex ratio, CFR, and seasonality differ substantially across the affected provinces, which seem to be consistent with local agricultural activities and the seasonal abundance of ticks. Spatial scan statistics detected three hot spots of SFTS that accounted for 69.1% of SFTS cases in China. There was a strong association of SFTS incidence with temporal changes in the climate within the clusters. Multivariate modeling identified climate conditions, elevation, forest coverage, cattle density, and the presence of Haemaphysalis longicornis ticks as independent risk factors in the distribution of SFTS, based on which a predicted risk map of the disease was derived.

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“…sanguineus can develop well under different conditions in terms of temperature (e.g., 20-35°C) and relative humidity (e.g., 35-95%) [47]. In a previous study Chandra et al, (2019) have shown that H. Dromedarii is the most common tick parasitising dogs in Riyadh province.This tick preferentially parasitises camels, although has been known to parasitise other ungulates [48,49]. In this study, we did not collected ticks from dogs and cats from Asir province hence it is difficult to conclude the presence of these parasites in Asir province but not in Riyadh province.…”

Section: Resultsmentioning

confidence: 82%

Application of advanced molecular techniques to detect vector borne pathogens from stray dogs and cats in two different climatic zones of Saudi Arabia

Alanazi

Šlapeta

Alouffi

et al. 2020

Preprint

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Background: Vector-borne diseases have been increasing worldwide and reported in many animals including dogs and cats. Limited or no data are currently available regarding canine and feline vector-borne diseases in Saudi Arabia and limited information is available from other Middle Eastern countries. The aim of this study was to compare vector-borne disease prevalence between two bio-climatically distinct regions of Saudi Arabia, Riyadh province that is arid positioned at low elevation and Asir province that is humid at high elevation. Methods: Blood samples from 74d ogs from Riyadh province and 70 dogs and 44 cats from Asirprovince were collected and examined for the presence of genomic DNA of Babesias pp, Anaplasma spp., Ehrlichias pp., Bartonella spp., Mycoplasma spp., and Hepatozoon spp. by polymerase chain reaction (PCR), Multiplex-tandem PCR (MT-PCR) and Sanger sequencing.Results: Seventy four dogs were tested from Riyadh province and found be negative of any pathogen. Of the 70 dogs examined from Asir province 45(64.3%) were positive. Specifically, 40 (57.1%) dogs were positive for A.platys, 20 (28.5%) for B.vogeli, 11(15.7%) for My.Haemocanis, two (2.85%) for Candidatus Mycoplasma haematoparvum and one (1.4%) for Br.henselae. Fourteen out of 44 cats (31.8%) were positive for one of the detected vector-borne pathogens. Six cats (13.6%) were positive for Candidatus Mycoplasma haemominutum and My.haemofelis, respectively, four cats (9.2%) were positive for Br.Henselae, two (4.54%) for Candidatus Mycoplasma haematoparvum and one (2.27%) for A. platys. Conclusions: The results of this study report the occurrence of A. platys, B. vogeli, Br. henselae, and My. haemocanis in dogs and of A. platys, Br. henselae, My.haemofelis and Candidatus Mycoplasma haemominutum in cats from Asir province Further molecular investigations are strongly recommended in order to reduce the risk of dogs and cats acquiring vector-borne diseases in Saudi Arabia.

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Life cycle of the camel tick Hyalomma dromedarii (Acari: Ixodidae) under field conditions in Northern Sudan

Cited by 19 publications

References 16 publications

Rhipicephalus sanguineus sensu lato from dogs and dromedary camels in Riyadh, Saudi Arabia: low prevalence of vector-borne pathogens in dogs detected using multiplexed tandem PCR panel

Rhipicephalus sanguineus sensu lato from dogs and dromedary camels in Riyadh, Saudi Arabia: low prevalence of vector-borne pathogens in dogs detected using multiplexed tandem PCR panel

A National Assessment of the Epidemiology of Severe Fever with Thrombocytopenia Syndrome, China

Application of advanced molecular techniques to detect vector borne pathogens from stray dogs and cats in two different climatic zones of Saudi Arabia

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