ArticleParasites & vectors2020
Description of Cryptosporidium ornithophilus n. sp. (Apicomplexa: Cryptosporidiidae) in farmed ostriches.
Article in Parasites & vectors, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.
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Who cites it
23 citing papers in PubMed, 54 citations in OpenAlex.
- The genome sequence of the gastric gland parasite,iScience · 2026Article
- Cryptosporidium geckonae n. sp. (Apicomplexa: Cryptosporidiidae) in geckos.Parasites & vectors · 2025Article
- Food and Waterborne Cryptosporidiosis from a One Health Perspective: A Comprehensive Review.Animals : an open access journal from MDPI · 2024Review
- Cryptosporidium mortiferum n. sp. (Apicomplexa: Cryptosporidiidae), the species causing lethal cryptosporidiosis in Eurasian red squirrels (Sciurus vulgaris).Parasites & vectors · 2023Article
- Migrating Anatidae as Sources of Environmental Contamination with ZoonoticPathogens (Basel, Switzerland) · 2023Review
- Molecular and phylogenetic characterization of Cryptosporidium species in the saffron finch Sicalis flaveola.BMC veterinary research · 2022Article
- Cryptosporidiosis: From Prevention to Treatment, a Narrative Review.Microorganisms · 2022Review
- Seasonal distribution of Cryptosporidium spp., Giardia duodenalis and Enterocytozoon bieneusi in Tibetan sheep in Qinghai, China.Parasites & vectors · 2022Article
- Genotyping and subtyping of Cryptosporidium spp. and Giardia duodenalis isolates from two wild rodent species in Gansu Province, China.Scientific reports · 2022Article
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- Occurrence ofMedicina (Kaunas, Lithuania) · 2022Article
- A review of the current status ofParasitology · 2022Review
- Validation of a one-tube nested real-time PCR assay for the detection of Cryptosporidium spp. in avian fecal samples.Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria · 2022Article
- Wastewater-based epidemiology-surveillance and early detection of waterborne pathogens with a focus on SARS-CoV-2, Cryptosporidium and Giardia.Parasitology research · 2021Review
- Occurrence and molecular characterization of Cryptosporidium spp., Giardia duodenalis, Enterocytozoon bieneusi, and Blastocystis sp. in captive wild animals in zoos in Henan, China.BMC veterinary research · 2021Article
- Cryptosporidium and cryptosporidiosis in wild birds: A One Health perspective.Parasitology research · 2021Review
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- Genetic diversity and shedding profiles forCurrent research in parasitology & vector-borne diseases · 2021Article
- Article
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Authors and funding
7 authors at 3 institutions in 3 countries.
Funding
Abstract
backgroundAvian cryptosporidiosis is a common parasitic disease that is caused by five species, which are well characterised at the molecular and biological level, and more than 18 genotypes for which we have limited information. In this study, we determined the occurrence and molecular characteristics of Cryptosporidium spp. in farmed ostriches in the Czech Republic.
methodsThe occurrence and genetic identity of Cryptosporidium spp. were analysed by microscopy and PCR/sequencing of the small subunit rRNA, actin, HSP70 and gp60 genes. Cryptosporidium avian genotype II was examined from naturally and experimentally infected hosts and measured using differential interference contrast. The localisation of the life-cycle stages was studied by electron microscopy and histologically. Infectivity of Cryptosporidium avian genotype II for cockatiels (Nymphicus hollandicus (Kerr)), chickens (Gallus gallus f. domestica (L.)), geese (Anser anser f. domestica (L.)), SCID and BALB/c mice (Mus musculus L.) was verified.
resultsA total of 204 individual faecal samples were examined for Cryptosporidium spp. using differential staining and PCR/sequencing. Phylogenetic analysis of small subunit rRNA, actin, HSP70 and gp60 gene sequences showed the presence of Cryptosporidium avian genotype II (n = 7) and C. ubiquitum Fayer, Santín & Macarisin, 2010 IXa (n = 5). Only ostriches infected with Cryptosporidium avian genotype II shed oocysts that were detectable by microscopy. Oocysts were purified from a pooled sample of four birds, characterised morphometrically and used in experimental infections to determine biological characteristics. Oocysts of Cryptosporidium avian genotype II measure on average 6.13 × 5.15 μm, and are indistinguishable by size from C. baileyi Current, Upton & Haynes, 1986 and C. avium Holubová, Sak, Horčičková, Hlásková, Květoňová, Menchaca, McEvoy & Kváč, 2016. Cryptosporidium avian genotype II was experimentally infectious for geese, chickens and cockatiels, with a prepatent period of four, seven and eight days post-infection, respectively. The infection intensity ranged from 1000 to 16,000 oocysts per gram. None of the naturally or experimentally infected birds developed clinical signs in the present study.
conclusionsThe molecular and biological characteristics of Cryptosporidium avian genotype II, described here, support the establishment of a new species, Cryptosporidium ornithophilus n. sp.
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