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. 2019 Dec 18;8(1):6.
doi: 10.3390/microorganisms8010006.

First Detection of Cryptosporidium spp. in Migratory Whooper Swans (Cygnus cygnus) in China

Ke Wang  1 , Azhar Gazizova  1 , Yuexin Wang  1 , Kaihui Zhang  1 , Yifan Zhang  2 , Yankai Chang  1 , Yuan Cui  2 , Yuxi Zhang  3 , Sumei Zhang  1 , Longxian Zhang  1
Affiliations

First Detection of Cryptosporidium spp. in Migratory Whooper Swans (Cygnus cygnus) in China

Ke Wang et al. Microorganisms. .

Abstract

Cryptosporidium is an important protozoan parasite that can cause gastrointestinal diseases in humans and that also causes respiratory and gastrointestinal diseases in birds. In this study, we investigated the occurrence of Cryptosporidium species in migratory whooper swans in China. Fecal samples (n = 467) from whooper swans were collected from Sanmenxia Swan Lake National Urban Wetland Park, China. The samples were analyzed for Cryptosporidium species and genotypes with PCR along a sequence analysis of the small subunit rRNA. Cryptosporidium was detected in eight of the 467 (1.7%) samples. The analysis of the small subunit rRNA sequence data revealed two zoonotic species (Cryptosporidium parvum and Cryptosporidium andersoni) and one genotype (Cryptosporidium goose genotype II). These are the first data on the positive rate of Cryptosporidium spp. in whooper swans in China, and they suggest that whooper swans can harbor the zoonotic species C. parvum and C. andersoni in China.

Keywords: Cryptosporidium; whooper swans; zoonotic.

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Conflict of interest statement

The authors declare that they have no conflicts of interest.

Figures

Figure 1
Figure 1
Location of the city (▲) in which the samples were collected.
Figure 2
Figure 2
Neighbor-joining tree based on small subunit (SSU) rRNA gene sequences of Cryptosporidium. GenBank accession numbers are shown in parentheses after the isolate identifiers. Numbers on the branches are percentage bootstrap values >50% that were calculated from 1000 replicates. Genotypes marked with filled triangles are known genotypes identified in the present study.
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