| Issue |
Parasite
Volume 32, 2025
|
|
|---|---|---|
| Article Number | 63 | |
| Number of page(s) | 10 | |
| DOI | https://doi.org/10.1051/parasite/2025056 | |
| Published online | 25 September 2025 | |
Research Article
Cryptosporidium spp. in wild rodents in the Poyang Lake region, China
Cryptosporidium spp. chez les rongeurs sauvages de la région du lac Poyang, en Chine
1
National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), NHC Key Laboratory of Parasite and Vector Biology, National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Shanghai 200025, PR China
2
Institute of Biological Resources, Jiangxi Academy of Sciences, Nanchang 330096, PR China
3
The School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, PR China
* Corresponding authors: This email address is being protected from spambots. You need JavaScript enabled to view it.
(Yujuan Shen); This email address is being protected from spambots. You need JavaScript enabled to view it.
(Jianping Cao)
Received:
17
April
2025
Accepted:
6
September
2025
Abstract
Cryptosporidium spp. are zoonotic protozoan parasites that cause diarrheal disease worldwide. Rodents can harbor diverse Cryptosporidium spp. and facilitate their transmission to the environment and other hosts, including humans. However, data on Cryptosporidium infection in wild rodents in the Poyang Lake region, China’s largest freshwater lake, remain scarce. Here, we investigated Cryptosporidium spp. in 273 wild rodents collected from seven sites adjacent to villages around Poyang Lake between 2022 and 2024. The rodents were identified by cytochrome c oxidase subunit I (COI) gene sequencing as Apodemus agrarius (n = 148) and Rattus losea (n = 125). Nested PCR targeting the small subunit ribosomal RNA (SSU rRNA) gene revealed an overall Cryptosporidium spp. infection rate of 16.5% (45/273, 95% CI: 12.3–21.9%), with 20.3% (30/148, 95% CI: 14.2–27.8%) in A. agrarius and 12.0% (15/125, 95% CI: 6.9–19.0%) in R. losea. Sequence and phylogenetic analyses identified seven Cryptosporidium species/genotypes: C. apodemi, C. canis, C. muris, C. suis, C. ubiquitum, rat genotype II, and rat genotype III. Notably, the detection of four zoonotic species (C. canis, C. muris, C. suis, and C. ubiquitum) highlights the potential risk of zoonotic transmission of Cryptosporidium spp. from wild rodents to humans in this region. These findings underscore the need for systematic surveillance and control of Cryptosporidium spp. in wild rodent communities around Poyang Lake.
Résumé
Les Cryptosporidium spp. sont des parasites protozoaires zoonotiques responsables de maladies diarrhéiques dans le monde entier. Les rongeurs peuvent héberger diverses espèces de Cryptosporidium et faciliter leur transmission à l’environnement et à d’autres hôtes, dont l’homme. Cependant, les données sur l’infection à Cryptosporidium chez les rongeurs sauvages de la région du lac Poyang, le plus grand lac d’eau douce de Chine, restent rares. Nous avons étudié Cryptosporidium spp. chez 273 rongeurs sauvages collectés dans sept sites adjacents à des villages autour du lac Poyang entre 2022 et 2024. Les rongeurs ont été identifiés par séquençage du gène de la sous-unité I de la cytochrome c oxydase (COI) comme étant Apodemus agrarius (n = 148) et Rattus losea (n = 125). La PCR imbriquée ciblant le gène de l’ARN ribosomique de la petite sous-unité (ARNr SSU) a révélé un taux d’infection global par Cryptosporidium spp. de 16,5 % (45/273, IC à 95 % : 12,3-21,9 %), avec 20,3 % (30/148, IC à 95 % : 14,2-27,8 %) chez A. agrarius et 12,0 % (15/125, IC à 95 % : 6,9-19,0 %) chez R. losea. Les analyses de séquence et phylogénétiques ont identifié sept espèces/génotypes de Cryptosporidium : C. apodemi, C. canis, C. muris, C. suis, C. ubiquitum, génotype II du rat, génotype III du rat. Notamment, la détection de quatre espèces zoonotiques (C. canis, C. muris, C. suis et C. ubiquitum) met en évidence le risque potentiel de transmission zoonotique de Cryptosporidium spp. des rongeurs sauvages à l’homme dans cette région. Ces résultats soulignent la nécessité d’une surveillance et d’un contrôle systématiques de Cryptosporidium spp. dans les communautés de rongeurs sauvages autour du lac Poyang.
Key words: Cryptosporidium / Zoonotic / Wild rodents / Apodemus agrarius / Rattus losea / Poyang Lake region
Edited by: Jean-Lou Justine
These authors contributed equally.
© Q. Zuo et al., published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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