Chytrid prevalence and infection intensity in treefrogs from three environments with different degrees of conservation in Mexico
Bolom Huet, René [autor] | Pineda Arredondo, Eduardo Octavio [autor] | Andrade Torres, Antonio [autor] | Díaz Fleischer, Francisco [autor] | Muñoz Alonso, Luis Antonio [autor] | Galindo González, Jorge [autor].
Tipo de material: Artículo en línea Tipo de contenido: Texto Tipo de medio: Computadora Tipo de portador: Recurso en líneaTema(s): Plectrohyla matudai | Ptychohyla euthysanota | Anfibios | Batrachochytrium dendrobatidis | Quitridiomicosis | Bosque de nieblaTema(s) en inglés: Plectrohyla matudai | Ptychohyla euthysanota | Amphibians | Batrachochytrium dendrobatidis | Chytridiomycosis | Cloud forestsDescriptor(es) geográficos: Reserva de la Biosfera La Sepultura (Chiapas, México) Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Biotropica. Volumen 55, número 2 (Mar. 2023), páginas 287-562. --ISSN: 1744-7429Número de sistema: 63348Resumen:Tipo de ítem | Biblioteca actual | Colección | Signatura | Estado | Fecha de vencimiento | Código de barras |
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Artículos | Biblioteca Electrónica Recursos en línea (RE) | ECOSUR | Recurso digital | ECO40000063348 |
Disponible para usuarios de ECOSUR con su clave de acceso
Chytridiomycosis, caused by the fungus Batrachochytrium dendrobatidis (Bd), has been related to rapid population declines and extinction in amphibians around the world. Bd has been associated with a severe decline in amphibian populations in southern Mexico. We compare the prevalence and intensity of Bd infection in two tree frogs in southern Mexico with similar life habits (Plectrohyla matudai and Ptychohyla euthysanota), inquiring if they differ across habitat types with different degrees of disturbance: preserved cloud forest, secondary cloud forest and anthropized riparian vegetation, and across three seasons. We examine the relationship between infection prevalence and intensity with biotic and abiotic variables. Infection prevalence differed between the two species, but not among environments, despite their similar life habits. Among seasons, prevalence decreased significantly at the end of the rainy season. There was no indication of significant changes in infection intensity between species, environments, and seasons. Moreover, the interaction among extrinsic factors (canopy cover, temperature, relative humidity) and factors intrinsic factors (body condition) explains the dynamics of Bd infection in the region. In our sample, we found no disease-affected individuals, which may indicate that both species are resistant to the effects of the pathogen under field conditions. Finally, our results found no evidence to indicate that open canopies and anthropized habitats of the Sierra Madre de Chiapas are a refuge that prevents high prevalence or infection of Bd in stream breeders' amphibians. eng