Gastrointestinal parasites in wild rodents in Chiloé Island-Chile

Gastrointestinal parasites are well-documented in small mammals from north-central Chile, but little is known about endoparasites of rodents in southern Chile. A survey was conducted between January and February 2018 to evaluate gastrointestinal parasites and risk factors of wild rodents that live i...

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Bibliographic Details
Published in:Revista brasileira de parasitologia veterinaria 2023, Vol.32 (1), p.e017022
Main Authors: Carrera-Játiva, Patricio David, Torres, Constanza, Figueroa-Sandoval, Fernanda, Beltrami, Esperanza, Verdugo, Claudio, Landaeta-Aqueveque, Carlos, Acosta-Jamett, Gerardo
Format: Article
Language:English
Subjects:
Animals
Austral
Chile
Chile - epidemiology
Feces - parasitology
helminth
Helminths
Intestinal Diseases, Parasitic - epidemiology
Intestinal Diseases, Parasitic - parasitology
Intestinal Diseases, Parasitic - veterinary
Parasites
PARASITOLOGY
protozoa
Rodentia - parasitology
Small-mammals
VETERINARY SCIENCES
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Summary:Gastrointestinal parasites are well-documented in small mammals from north-central Chile, but little is known about endoparasites of rodents in southern Chile. A survey was conducted between January and February 2018 to evaluate gastrointestinal parasites and risk factors of wild rodents that live in rural areas in Northern Chiloé Island, Chile. A total of 174 fecal samples from rodents of six native and one introduced species were collected and examined using the Mini-FLOTAC method. Also, 41 individuals of four native wild rodent species were examined furtherly to determinate adult parasites from gastrointestinal tracts. The overall prevalence of endoparasites was 89.65% (156). Helminth egg types included: Rodentolepis spp., Capillariidae, Trichuris sp., Syphacia sp., oxyurid-type eggs, Strongyloides sp., Spirurid-type eggs, Strongilid-type eggs, Moniliformis sp., and an unidentified nematode egg and larvae. Protozoa comprised coccidia, amoeba, and unidentified cysts. From necropsies, adult parasites involved Syphacia sp. Trichuris sp., Protospirura sp. and Physaloptera sp. In Abrothrix olivacea, individuals with low-body-mass index exhibited reduced infection probability for Spirurid-type and Strongilid-type eggs. Some parasites in this study may affect human health. In rural settings where environmental conditions are changing, more research should be undertaken to understand parasitic infections in wildlife and implications for public health and conservation.
ISSN:0103-846X
1984-2961
1984-2961
DOI:10.1590/S1984-29612023002