{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,9]],"date-time":"2026-07-09T22:43:32Z","timestamp":1783637012977,"version":"3.55.0"},"reference-count":28,"publisher":"Cambridge University Press (CUP)","issue":"13","license":[{"start":{"date-parts":[[2017,8,14]],"date-time":"2017-08-14T00:00:00Z","timestamp":1502668800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":["www.cambridge.org"],"crossmark-restriction":true},"short-container-title":["Parasitology"],"published-print":{"date-parts":[[2017,11]]},"abstract":"<jats:title>SUMMARY<\/jats:title><jats:p>Currently, the systematics, biology and epidemiology of piscine <jats:italic>Cryptosporidium<\/jats:italic> species are poorly understood. Here, we compared Sanger \u2012 and next-generation \u2012 sequencing (NGS), of piscine <jats:italic>Cryptosporidium<\/jats:italic>, at the 18S rRNA and actin genes. The hosts comprised 11 ornamental fish species, spanning four orders and eight families. The objectives were: to (i) confirm the rich genetic diversity of the parasite and the high frequency of mixed infections; and (ii) explore the potential of NGS in the presence of complex genetic mixtures. By Sanger sequencing, four main genotypes were obtained at the actin locus, while for the 18S locus, seven genotypes were identified. At both loci, NGS revealed frequent mixed infections, consisting of one highly dominant variant plus substantially rarer genotypes. Both sequencing methods detected novel <jats:italic>Cryptosporidium<\/jats:italic> genotypes at both loci, including a novel and highly abundant actin genotype that was identified by both Sanger sequencing and NGS. Importantly, this genotype accounted for 68\u00b79% of all NGS reads from all samples (249 585\/362 372). The present study confirms that aquarium fish can harbour a large and unexplored <jats:italic>Cryptosporidium<\/jats:italic> genetic diversity. Although commonly used in molecular parasitology studies, nested PCR prevents quantitative comparisons and thwarts the advantages of NGS, when this latter approach is used to investigate multiple infections.<\/jats:p>","DOI":"10.1017\/s0031182017001214","type":"journal-article","created":{"date-parts":[[2017,8,14]],"date-time":"2017-08-14T07:07:25Z","timestamp":1502694445000},"page":"1811-1820","update-policy":"https:\/\/doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":25,"title":["<i>Cryptosporidium<\/i> in fish: alternative sequencing approaches and analyses at multiple loci to resolve mixed infections"],"prefix":"10.1017","volume":"144","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1105-5184","authenticated-orcid":false,"given":"ANDREA","family":"PAPARINI","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"RONGCHANG","family":"YANG","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"LINDA","family":"CHEN","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"KAISING","family":"TONG","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"SUSAN","family":"GIBSON-KUEH","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"ALAN","family":"LYMBERY","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"UNA 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