ArticlePloS one
Sarcoptic mange outbreak decimates South American wild camelid populations in San Guillermo National Park, Argentina.
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14 citing papers in PubMed, 33 citations in OpenAlex.
- Identification and molecular characterization ofInternational journal for parasitology. Parasites and wildlife · 2025Article
- Disease surveillance in albatrosses and petrels from the Southwest Atlantic and Southern Ocean.Parasitology · 2025Article
- Sarcoptic mange in a guanaco (International journal for parasitology. Parasites and wildlife · 2025Article
- Molecular analysis ofParasitology · 2025Article
- Making the most of mortalities: Novel host-parasite records in a sandy inland mouse (International journal for parasitology. Parasites and wildlife · 2025Article
- Estimating the impact of sarcoptic mange epidemic on the population size of wild raccoon dogs (International journal for parasitology. Parasites and wildlife · 2024Article
- First report on the occurrence of psoroptic mange in llamas (Lama glama) of the Andean region.Parasitology research · 2024Article
- Effective treatment of sarcoptic mange in an alpaca (Vicugna pacos) using fluralaner: a case report.Veterinary research communications · 2024Article
- Non-specific markers of inflammation in bare-nosed wombats (Frontiers in veterinary science · 2024Article
- Epidemiology of sarcoptic mange in free-ranging vicuñas (Vicugna vicugna): a cross-sectional study in Andean highland communities in Peru.Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria · 2024Article
- Density independent decline from an environmentally transmitted parasite.Biology letters · 2023Article
- Assessing Variation in the Individual-Level Impacts of a Multihost Pathogen.Transboundary and emerging diseases · 2023Article
- Sarcoptic mange outbreaks in vicuñas (Cetartiodactyla: Camelidae): A scoping review and future prospects.Transboundary and emerging diseases · 2022Article
- Occurrence of sarcoptic mange in free-ranging vicuñas (Vicugna vicugna) of the Andean high plateau region of Argentina.Parasitology research · 2022Article
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7 authors at 4 institutions in 2 countries.
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No grant is acknowledged in the PubMed record.
Abstract
Sarcoptic mange epidemics can devastate wildlife populations. In 2014, mange was first detected in vicuñas (Vicugna vicugna) and guanacos (Lama guanicoe) in San Guillermo National Park (SGNP), Argentina. This study describes the temporal dynamics of the outbreak, its effects on the park's wild camelid populations between 2017-2019, and investigates the potential source of the epidemic. From May 2017 to June 2018, transect surveys indicated a sharp decrease in the density of living vicuñas and guanacos by 68% and 77%, respectively. By April 2019 no vicuñas or guanacos were recorded on transect surveys, suggesting their near-extinction in the park. Clinical signs consistent with mange (e.g., intense scratching, hyperkeratosis, alopecia) were observed in 24% of living vicuñas (n = 478) and 33% of living guanacos (n = 12) during surveys, as well as in 94% of vicuña carcasses (n = 124) and 85% of guanaco carcasses (n = 20) examined. Sarcoptes scabiei was identified as the causal agent by skin scrapings, and the cutaneous lesions were characterized by histopathology (n = 15). Genetic characterization revealed that mites recovered from seven vicuñas (n = 13) and three guanacos (n = 11) shared the same genotype, which is consistent with a single source and recent origin of the epidemic. Tracing the potential source, we identified a governmental livestock incentive program which introduced llamas (Lama glama) in areas adjacent to SGNP in 2009, some of which had alopecic scaling consistent with sarcoptic mange. Though at the time of our study no llamas with mange were available for confirmatory sampling, we hypothesize that the introduction of mange-infected llamas may have triggered the outbreak in wild camelids. This unprecedented event in SGNP had devastating effects on dominating herbivores with potentially profound cascading effects at the community and ecosystem levels.
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