A first report of Thelazia callipaeda infection in Phortica okadai and wildlife in national nature reserves in China
| Autor: | Jiaqi Wei, Nianjun He, Liubin Tang, Jiahao Lin, Degui Lin, Yipeng Jin, Yifan Wen, Zichen Liu |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0301 basic medicine
Entomology China Phortica okadai 030231 tropical medicine Sus scrofa Wildlife Short Report Zoology Vector Borne Diseases Animals Wild Cat Diseases lcsh:Infectious and parasitic diseases 03 medical and health sciences 0302 clinical medicine Dogs Wild boar biology.animal Zoonoses Animals Humans Drosophilidae lcsh:RC109-216 Dog Diseases Eye Infections Parasitic Nematode Infections Thelazia callipaeda Disease Reservoirs Nature reserve biology Intermediate host Nature reserves Leopard biology.organism_classification Insect Vectors 030104 developmental biology Infectious Diseases Vector (epidemiology) Cats Thelazioidea Parasitology Vector-borne zoonosis Ursidae |
| Zdroj: | Parasites & Vectors, Vol 14, Iss 1, Pp 1-11 (2021) Parasites & Vectors |
| ISSN: | 1756-3305 |
| Popis: | BackgroundThelazia callipaedais a zoonotic parasitic nematode of the family Thelaziidae, withPhortica okadaias its intermediate host and only confirmed vector in China. China has the largest number of human cases of thelaziosis in the world. It is generally believed that infected domestic animals (dogs and cats) are the most important reservoir hosts ofT. callipaeda, and thus pose a direct threat to humans. At present, there is little research or attention focused on the role of wildlife in the transmission cycle of thelaziosis in nature reserves.MethodsWe selected locations in four national nature reserves across China to monitorP. okadaiand wildlife. We used a fly-trap method to monitorP. okadaidensity. Morphological analysis of the parasites collected from the conjunctival sac of the infected wildlife was undertaken as the first step in species identification, and polymerase chain reaction (PCR) was used for species confirmation.ResultsIn 2019, the density ofP. okadaiin Foping National Nature Reserve in China increased sharply, and infectedP. okadaiwere newly found in the reserve. Giant panda, wild boar, leopard cat, and black bear were found to be newly infected withT. callipaeda(one individual of each species). A total of four worms were collected, one from each species of wildlife. The four worms were identified asT. callipaedaby their morphological characteristics; species identification was confirmed by PCR amplification.ConclusionsTo the best of our knowledge, this is the first report ofT. callipaedainfection inP. okadaias well as in a variety of wildlife, including giant panda, in nature reserves in China. These results indicate that there is a transmission cycle ofT. callipaedaamong wildlife in these nature reserves. The increasing number of case reports of thelaziosis in wildlife suggest a likely risk ofT. callipaedainfection for the inhabitants of villages situated around nature reserves. |
| Databáze: | OpenAIRE |
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