Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/325955
Type: Artigo
Title: Seasonality, Environmental Factors, And Host Behavior Linked To Disease Risk In Stream-dwelling Tadpoles
Seasonality, environmental factors, and host behavior linked to disease risk in stream-dwelling tadpoles
Author: Valencia-Aguilar, Anyelet
Toledo, Luís F.
Vital, Marcos V.C.
Mott, Tamí
Abstract: The aquatic pathogen Batrachochytrium dendrobatidis (Bd) can cause declines in amphibian populations and species extinctions worldwide. In tadpoles, epizootic events have not been reported; however, there is a possibility for rapid spread of disease in water. Here, we quantified Bd infection dynamics in tadpoles from two streams in the northeastern Atlantic forest of Brazil. Bd prevalence varied seasonally and increased during the rainy season. Aplastodiscus sibilatus and Proceratophrys renalis tadpoles were Bd positive in both seasons, whereas Agalychnis granulosa tadpoles were Bd positive only during the rainy season. Bd prevalence was higher in A. sibilatus than in A. granulosa and P. renalis. We found that larger individuals have a higher probability of being Bd positive, independent of the developmental stage. Moreover, we found that canopy cover, water flow, water temperature, water depth, and pH were associated with Bd prevalence. Our results highlight the fact that tadpoles can serve as pathogen reservoirs; therefore, monitoring anuran larvae populations in these habitats can enhance the impact assessment of this pathogen in biodiversity hot spots.
The aquatic pathogen Batrachochytrium dendrobatidis (Bd) can cause declines in amphibian populations and species extinctions worldwide. In tadpoles, epizootic events have not been reported
however, there is a possibility for rapid spread of disease in
Subject: Abiotic Factors
Anura Larvae
Atlantic Forest
Batrachochytrium Dendrobatidis
Disease Ecology
Fatores abióticos
Girino
Anfíbio - Mata Atlântica
Batrachochytrium dendrobatidis
Anfibio - Doenças
Ecofisiologia animal
Country: Estados Unidos
Editor: Allen Press
Citation: Herpetologica. Herpetologists League, v. 72, p. 98 - 106, 2016.
Rights: fechado
fechado
Identifier DOI: 10.1655/HERPETOLOGICA-D-15-00013
Address: https://www.hljournals.org/doi/abs/10.1655/HERPETOLOGICA-D-15-00013
Date Issue: 2016
Appears in Collections:IB - Artigos e Outros Documentos

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