Coinfection of Chytrid Fungi in Urodeles during an Outbreak of Chytridiomycosis in Spain.

Autor:	Ribas MP; Wildlife Conservation Medicine Research Group (WildCoM), Departament de Medicina i Cirurgia Animals, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.; Research and Conservation Department, Zoo de Barcelona, Parc de la Ciutadella s/n, 09003 Barcelona, Spain., Cabezón O; Wildlife Conservation Medicine Research Group (WildCoM), Departament de Medicina i Cirurgia Animals, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain., Velarde R; Wildlife Ecology & Health Group (WEH) and Servei d'Ecopatologia de Fauna Salvatge (SEFaS), Departament de Medicina i Cirurgia Animals, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain., Estruch J; Wildlife Ecology & Health Group (WEH) and Servei d'Ecopatologia de Fauna Salvatge (SEFaS), Departament de Medicina i Cirurgia Animals, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain., Serrano E; Wildlife Ecology & Health Group (WEH) and Servei d'Ecopatologia de Fauna Salvatge (SEFaS), Departament de Medicina i Cirurgia Animals, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain., Bosch J; Biodiversity Research Institute (University of Oviedo-CSIC-Principality of Asturias), 33600 Mieres, Spain., Thumsová B; Biodiversity Research Institute (University of Oviedo-CSIC-Principality of Asturias), 33600 Mieres, Spain.; Museo Nacional de Ciencias Naturales-CSIC, 28006 Madrid, Spain., Martínez-Silvestre A; Catalonia Reptile and Amphibian Rescue Center (CRARC), 08783 Masquefa, Spain.
Jazyk:	angličtina
Zdroj:	Journal of wildlife diseases [J Wildl Dis] 2022 Jul 01; Vol. 58 (3), pp. 658-663.
DOI:	10.7589/JWD-D-21-00170
Abstrakt:	Chytridiomycosis, caused by Batrachochytrium dendrobatidis (Bd) and Batrachochytrium salamandrivorans (Bsal), has had an unprecedented impact on amphibian biodiversity. Although Bd is globally widespread, Bsal is currently spreading, increasing the probability that these pathogens will co-occur in individual amphibians. Interactions among coinfecting parasites can have significant outcomes on disease dynamics and impact and, therefore, may have important consequences for amphibian conservation. We analyzed the patterns of Bd-Bsal coinfections in two species of free-ranging urodeles during an outbreak of chytridiomycosis in Spain. Our goals were to assess 1) the probability of co-occurrence of both chytrid species and 2) the correlation of pathogen loads in coinfected hosts. We detected coinfections in 81.58% of Triturus marmoratus (n=38) and in 18.75% of Ichthyosaura alpestris (n=16). Histopathologic lesions of chytridiomycosis were observed only in T. marmoratus. Our results demonstrate a positive relationship between Bd and Bsal loads in T. marmoratus, whereas the co-occurrence analysis showed a random association among pathogens in both urodele species. Overall, we show that Bd-Bsal coinfections intensify pathogen load in T. marmoratus and could, therefore, increase disease severity and have important consequences for the conservation of some amphibian species. (© Wildlife Disease Association 2022.)
Databáze:	MEDLINE
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