&lt;em&gt;Onchocerca armillata&lt;/em&gt; (Railliet et Henry, 1909) d'un nouvel hôte, &lt;em&gt;Camelus dromedarius&lt;/em&gt;

Tw, Schillhorn-Van-Veen; Si, Bello; Do, Folaranmi

doi:10.19182/remvt.8018

Cited by 9 publications

(1 citation statement)

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“…Three species of Onchocerca have been reported to occur in camels: O. fasciata (Cheema et al ., ), Onchocerca armillata and Onchocerca gutturosa (Hussein et al ., ), of which O. fasciata is the most prevalent. However, there have been only a few reports on onchocerciasis in camels, and these studies have mainly addressed the morphology of Onchocerca (Johnston, ; Henry & Masson, ; Bain & Nasher, ), or have assessed the prevalence of the disease or its effects by determining the distribution of microfilariae in the skin (Schillhorn‐van‐veen et al ., ; Sinnary & Hussein, ). Reports indicate that the prevalence of the disease varies between 5.82% and 59% among dromedaries (Mizan Zadeh, ; Moghaddar & Zahedie, ; Anvari ‐ Tafti et al ., ; Rad et al ., ; Farjanikish et al ., ), whereas Onchocerciasis also occurs in China, where it is mainly distributed in Inner Mongolia, because the host of the parasite [ C. bactrianus , numbering more than 2 million in China, with this decreasing markedly to 320 thousand (Yu, )] is mostly distributed in China and Mongolia, with half occurring in Inner Mongolia (Li et al ., ; Banerjee et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Survey of infection and determination of the transmission vector of Onchocerca fasciata in camels (Camelus bactrianus) in Inner Mongolia, China

Wang

Luo

et al. 2019

Medical Vet Entomology

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Onchocerciasis in camels is caused by adult Onchocerca spp. and results in great economic losses to the camel industry. However, only a few studies on Onchocerca have been conducted, especially regarding the intermediate host and vector(s). In the present study, 192 camels were examined from December and January during 2013 and 2016, and the filarial larvae suspected to be Onchocerca spp. were further identified. Furthermore, aquatic dipteran insects in the living environment of camels were collected from May to September between 2013 and 2017 and dissected. Eventually, onchocercal lesions were observed in 95 of 192 (49%) camels and the captured insects were classified into 49 species from 42 genera in 21 families, among which 18 species were newly recorded in Inner Mongolia and 14 were haematophagous species. The filarial larvae were found in Culicoides puncticollis and identified as Onchocerca fasciata, indicating that C. puncticollis is the vector of O. fasciata in Inner Mongolia. These findings provide an estimate of onchocerciasis infection in camels and an alternative method of identifying insects and screening vectors using molecular methods. Important data are also provided for the diagnosis and control of onchocerciasis, thereby further filling the gap in knowledge regarding transmission vectors in China.

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Section: Introductionmentioning

confidence: 99%

Survey of infection and determination of the transmission vector of Onchocerca fasciata in camels (Camelus bactrianus) in Inner Mongolia, China

Wang

Luo

et al. 2019

Medical Vet Entomology

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Onchocerca armillata Railliet and Henry, 1909 andOnchocerca gutturosa (Neumann, 1910) in camels (Camelus dromedarius L.) in the Sudan

Hussein

Mannan²,

Sinnary³

1988

Vet Res Commun

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A study undertaken to determine the Onchocerca species infecting camels that live in the same localities as cattle in the Dinder Region, Blue Nile Province, Sudan revealed concurrent infections with the bovine parasites Onchocerca armillata in the thoracic aorta, brachiocephalic trunks and brachial arteries and Onchocerca gutturosa in the ventral side of the lamellar parts of the ligamentum nuchae. The microfilariae of both species had the same predilection sites in the skin of the ears, head and neck regions. Those of O. gutturosa outnumber those of O. armillata but both are smaller than the respective uterine microfilariae. Males and microfilariae of both species are smaller than those of cattle origin.

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Molecular identification and phylogenetic analysis of Dipetalonema evansi (Lewis, 1882) in camels (Camelus dromedarius) of Iran

et al. 2016

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Despite the economic importance of camels, the parasites that affect them have not received adequate attention so far and molecular studies are scarce compared to other livestock. In this study, we characterized peripheral blood microfilariae in 200 healthy one-humped camels (Camelus dromedarius) from south-east Iran by microscopy and molecular tools to receive a more detailed insight into prevalence and species that affect them. Moreover, adult specimens of the filarial nematode Dipetalonema evansi were collected from the carcass of an infected animal. Microscopic examination was performed on Giemsa-stained blood smears, and blood was also spotted on Whatman FTA(®) cards for DNA analysis. Genomic DNA was extracted, and PCR was carried out for the detection of filaroid helminths, followed by sequence analysis of positive samples. Four samples were positive for microfilariae by microscopy, while 16 animals (8 %) were positive by PCR. Sequence analysis revealed D. evansi in all cases. Phylogenetic analysis of a cytochrome C oxidase subunit I (COI) sequence of filaroid nematodes showed that most species in a single genus cluster in the same clade; however, D. evansi and D. gracile are not monophyletic and branch rather at the base of the tree. Further studies on the life cycle of D. evansi, specifically the identification of intermediate host(s), have become feasible with the provision of the first specific COI sequences in this study.

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<em>Onchocerca armillata</em> (Railliet et Henry, 1909) d'un nouvel hôte, <em>Camelus dromedarius</em>

Abstract: Onchocerca armillata a été observé dans l'aorte d'un dromadaire, à l'abattoir de Kano, sur les 53 animaux examinés

Cited by 9 publications

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Survey of infection and determination of the transmission vector of Onchocerca fasciata in camels (Camelus bactrianus) in Inner Mongolia, China

Survey of infection and determination of the transmission vector of Onchocerca fasciata in camels (Camelus bactrianus) in Inner Mongolia, China

Onchocerca armillata Railliet and Henry, 1909 andOnchocerca gutturosa (Neumann, 1910) in camels (Camelus dromedarius L.) in the Sudan

Molecular identification and phylogenetic analysis of Dipetalonema evansi (Lewis, 1882) in camels (Camelus dromedarius) of Iran

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