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External Reinfection of a Fungal Pathogen Does not Contribute to Pathogen Growth.
DiRenzo, Graziella V; Tunstall, Tate S; Ibáñez, Roberto; deVries, Maya S; Longo, Ana V; Zamudio, Kelly R; Lips, Karen R.
Afiliación
  • DiRenzo GV; Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, Santa Barbara, 93106, USA.
  • Tunstall TS; Institute for Conservation Research, San Diego Zoo, San Diego, CA, 92027, USA. tatet2@gmail.com.
  • Ibáñez R; Smithsonian Tropical Research Institute, Panama City, Panama.
  • deVries MS; Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, 92037, USA.
  • Longo AV; Department of Biology, University of Maryland, College Park, College Park, MD, 20742, USA.
  • Zamudio KR; Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, 1458, USA.
  • Lips KR; Department of Biology, University of Maryland, College Park, College Park, MD, 20742, USA.
Ecohealth ; 15(4): 815-826, 2018 12.
Article en En | MEDLINE | ID: mdl-30128614
Chytridiomycosis is an emerging infectious disease of amphibians caused by the fungal pathogen Batrachochytrium dendrobatidis (Bd), which has led to devastating declines in amphibian populations worldwide. Current theory predicts that Bd infections are maintained through both reproduction on the host's skin and reinfection from sources outside of the host. To investigate the importance of external reinfection on pathogen burden, we infected captive-bred individuals of the highly susceptible Panamanian Golden Frog, Atelopus glyphus, and wild-caught glass frogs, Espadarana prosoblepon, with Bd. We housed the animals in one of three treatments: individually, in heterospecific pairs, and in conspecific pairs. For 8 weeks, we measured the Bd load and shedding rate of all frogs. We found that Atelopus had high rates of increase in both Bd load and shedding rate, but pathogen growth rates did not differ among treatments. The infection intensity of Espadarana co-housed with Atelopus was indistinguishable from those housed singly and those in conspecific pairs, despite being exposed to a large external source of Bd zoospores. Our results indicate that Bd load in both species is driven by pathogen replication within an individual, with reinfection from outside the host contributing little to the amplification of host fungal load.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Anuros / Quitridiomicetos / Micosis Límite: Animals País/Región como asunto: America central / Panama Idioma: En Revista: Ecohealth Año: 2018 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos
Texto completo
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Imprimir
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Anuros / Quitridiomicetos / Micosis Límite: Animals País/Región como asunto: America central / Panama Idioma: En Revista: Ecohealth Año: 2018 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos