A study of an enzootic focus of sheep babesiosis (Babesia ovis, Babes, 1892)

Yeruham, I.; Hadani, A.; Galker, F.; Rosen, S.

doi:10.1016/0304-4017(95)00783-7

Cited by 25 publications

(10 citation statements)

References 9 publications

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“…The disease occurs yearly in the R. bursa infested areas, during the activity period of the adult tick stage (Yeruham et al 1995). In the present study, R. bursa exhibited the highest (80.58%) frequency of infestation.…”

Section: Discussionmentioning

confidence: 56%

Determination of prevalence and risk factors for infection with Babesia ovis in small ruminants from Turkey by polymerase chain reaction

2006

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In this study, PCR and thin blood smear-based diagnostic methods were used to assess the frequency of Babesia infection in small ruminants. A total of 300 sheep and 100 goats from 37 randomly selected herds located in eight locations of eastern Turkey were examined for the presence of Babesia infection and any tick species on the body of the animals. Of 400 blood samples examined, 6 (1.5%) were positive for Babesia spp. piroplasms upon microscopic examination, whereas 33 (8.25%) were positive for the presence of B. ovis by PCR. The prevalence of babesiosis in small ruminants detected by PCR was significantly higher than obtained in microscopic examination of thin blood smears (P< 0.05). Thirty-three animals produced the DNA fragment specific for Babesia ovis of which 32 (10.66%) were sheep and 1 (1%) was goat. The difference between the prevalence of Babesia infection in sheep and goats were statistically significant (P < 0.05). The prevalence of Babesia infection in different age groups of sheep were statistically non-significant (P > 0.05). The frequency of B. ovis infection was higher in herds with tick burden than no tick burden (P < 0.05). Seven amplicons (six from sheep and one from goat) were sequenced. The resulting sequences were identical to the recently reported nucleotide sequence of B. ovis. A total of 510 ticks belonging to the Rhipicephalus spp. were collected from sheep. Ticks were identified to be R. bursa and R. turanicus on the basis of morphological features.

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Section: Discussionmentioning

confidence: 56%

Determination of prevalence and risk factors for infection with Babesia ovis in small ruminants from Turkey by polymerase chain reaction

2006

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“…The epidemiology of ovine piroplasmosis is closely related to the bioecology of the tick vector (Yeruham et al 1995). In the current study, the prevalence of Theileria infections in Mediterranean climate part (31.68 %) was found higher than the typical temperature climate part (8.00 %).…”

Section: Animals Infected With Theileria and Babesia Species May Becomentioning

confidence: 99%

A study on ovine tick-borne hemoprotozoan parasites (Theileria and Babesia) in the East Black Sea Region of Turkey

2012

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In this study, the frequency of Theileria and Babesia species was assessed via reverse line blotting and blood smear-based diagnostic methods in small ruminants. A total of 201 apparently healthy animals from 26 randomly selected herds located in 4 locations (Artvin, Giresun, Gumushane, and Tokat) of East Black Sea Region of Turkey were investigated for the blood protozoans. In a polymerase chain reaction (PCR), the hypervariable V4 region of the 18S ribosomal RNA gene was amplified with a set of general primers specific for all Theileria and Babesia species. The PCR products were hybridized against catchall and species-specific (Theileria spp., Theileria lestoquardi, Theileria ovis, Theileria sp. OT1, Theileria sp., OT3, Theileria sp., MK, Theileria luwenshuni, Theileria uilenbergi, Babesia spp., Babesia ovis, Babesia motasi, and Babesia crassa) probes. Theileria piroplasms were identified in nine (4.47%) samples by microscopic examination. Reverse line blotting (RLB) detected the infection in 19.90% of the samples. The infection rate of sheep (28.90%) was higher than goats (4.10%). T. ovis, Theileria sp., MK, and Theileria sp. OT3 were detected by RLB. The most prevalent Theileria species was T. ovis (18.90%) followed by Theileria sp. MK (0.99%). Theileria sp. OT3 was detected in one sample (0.43%). A single animal was infected as mix with T. ovis and Theileria sp. MK. The other Theileria (T. lestoquardi, Theileria sp. OT1, T. luwenshuni, and T. uilenbergi) and Babesia (B. ovis, B. motasi, and B. crassa) species were not detected. This study is the first molecular survey on ovine tick-borne protozoans in East Black Sea Region of Turkey.

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“…B. ovis-related morbidity and mortality are reported almost exclusively during late spring and summer months (Yeruham et al, 1995), implying that exposure to immature stages does not confer effective protection.…”

Section: Discussionmentioning

confidence: 99%

“…The parasite is therefore present in all developmental stages of the tick, and is maintaining both transovarial and trans-stadial transmission capacity (Buscher et al, 1988;Macleod, 1961). Immature stages of R. bursa ticks were recorded on grazing sheep and goats throughout the winter months (Yeruham et al, 1995). However, outbreaks of ovine babesiosis were described predominantly from April to July, congruent with the seasonality of the adult R. bursa activity (Yeruham et al, 2000(Yeruham et al, , 2001.…”

Section: Introductionmentioning

confidence: 90%

“…Yet, the correlation between the seasonal babesiosis outbreaks and the presence of different developmental tick stages on the sheep host was not thoroughly studied. Likewise, the efficiency of B. ovis transmission by different tick stages was not thoroughly examined (Yeruham et al, 1995). To address this question, we studied the transmission capacity of an Israeli B. ovis field strain by different R. bursa stages and by injection of blood merozoite stages.…”

Section: Introductionmentioning

confidence: 99%

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Transmission of Babesia ovis by different Rhipicephalus bursa developmental stages and infected blood injection

Erster¹,

Roth²,

Wolkomirsky³

et al. 2016

Ticks and Tick-borne Diseases

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A study of an enzootic focus of sheep babesiosis (Babesia ovis, Babes, 1892)

Cited by 25 publications

References 9 publications

Determination of prevalence and risk factors for infection with Babesia ovis in small ruminants from Turkey by polymerase chain reaction

Determination of prevalence and risk factors for infection with Babesia ovis in small ruminants from Turkey by polymerase chain reaction

A study on ovine tick-borne hemoprotozoan parasites (Theileria and Babesia) in the East Black Sea Region of Turkey

Transmission of Babesia ovis by different Rhipicephalus bursa developmental stages and infected blood injection

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