Differences in sensitivity to the fungal pathogen Batrachochytrium dendrobatidis among amphibian populations.
@article{Bradley2015DifferencesIS,
title={Differences in sensitivity to the fungal pathogen Batrachochytrium dendrobatidis among amphibian populations.},
author={Paul W Bradley and Stephanie S. Gervasi and Jessica Hua and Rickey D. Cothran and Rick A. Relyea and Deanna H. Olson and Andrew R. Blaustein},
journal={Conservation biology : the journal of the Society for Conservation Biology},
year={2015},
volume={29 5},
pages={
1347-56
}
}Contributing to the worldwide biodiversity crisis are emerging infectious diseases, which can lead to extirpations and extinctions of hosts. For example, the infectious fungal pathogen Batrachochytrium dendrobatidis (Bd) is associated with worldwide amphibian population declines and extinctions. Sensitivity to Bd varies with species, season, and life stage. However, there is little information on whether sensitivity to Bd differs among populations, which is essential for understanding Bd…
29 Citations
Virulence variation among strains of the emerging infectious fungus Batrachochytrium dendrobatidis (Bd) in multiple amphibian host species.
- Biology, Environmental ScienceDiseases of aquatic organisms
- 2017
The findings underscore the dynamic nature of Bd infection, showing that virulence can vary contingent on host and strain type and show the need for in vivo testing to fully assess pathogenicity.
The drivers of variation in susceptibility to the amphibian-killing fungus, Batrachochytrium dendrobatidis
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It was found that seawater serves to isolate demes, producing high levels of population differentiation, and that loss of genetic diversity parallels degree of isolation, which underscores the importance of habitat in forming discrete populations, and how this can shape variation in fundamental phenotypic traits.
Host age alters amphibian susceptibility to Batrachochytrium dendrobatidis, an emerging infectious fungal pathogen
- Biology, Environmental SciencePloS one
- 2019
In both host species, an increase in age was associated with frogs becoming more susceptible to Bd infection, harboring larger infection intensities, and greater risk of mortality, which suggests that the timing of Bd exposure may influence amphibian population dynamics.
Environmental persistence but not per capita transmission rates of a chytrid fungus determines infection prevalence
- Environmental Science
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It is found that infection prevalence differed among water sources, which was driven by differences in mortality rates of Bd zoospores, rather than differences in per-capita transmission rates, which suggest that variation in Bd infection dynamics could be a function of differences in exposure of hosts to live Bd.
Host niche may determine disease-driven extinction risk
- Environmental SciencePloS one
- 2017
Bromeliad phytotelmata may act as environmental refuges from Batrachochytrium dendrobatidis, which contribute to protecting associated amphibian communities against chytridiomycosis-driven amphibian declines that threaten the nearby riparian communities.
Gene expression differs in susceptible and resistant amphibians exposed to Batrachochytrium dendrobatidis
- BiologyRoyal Society Open Science
- 2018
Wood frog responses suggest that adaptive immune defences may be ineffective against virulent Bd isolates that can cause rapid physiological dysfunction, and American bullfrogs exhibited robust resistance to Bd that is likely attributable, at least in part, to their continued upkeep of metabolic and skin integrity pathways as well as greater antimicrobial peptide expression.
Host-pathogen metapopulation dynamics suggest high elevation refugia for boreal toads.
- Environmental ScienceEcological applications : a publication of the Ecological Society of America
- 2018
Evidence is found that boreal toad extinction risk was lowest at high elevations where temperatures may be suboptimal for Bd growth and where small borealToad populations may be below the threshold needed for efficient pathogen transmission.
Direct and Latent Effects of Pathogen Exposure Across Native and Invasive Amphibian Life Stages
- Biology, Environmental ScienceFrontiers in Veterinary Science
- 2021
It is suggested that exposure to Bd can directly affect embryo survival and has direct and latent effects on larvae survival of both native and invasive species, with timing of exposure and Bd strain influencing the severity of the effects.
Host–pathogen dynamics among the invasive American bullfrog (Lithobates catesbeianus) and chytrid fungus (Batrachochytrium dendrobatidis)
- Environmental Science, BiologyHydrobiologia
- 2018
Although infection loads were not different between strains, individuals exposed to the western strain survived, suggesting the ability to reduce their infection, and highlight differences between strains and response variation of an invasive species host.
Effect of Simultaneous Amphibian Exposure to Pesticides and an Emerging Fungal Pathogen, Batrachochytrium dendrobatidis.
- Biology, Environmental ScienceEnvironmental science & technology
- 2017
Amphibian declines have been linked to numerous factors, including pesticide use and the fungal pathogen Batrachochytrium dendrobatidis (Bd). Moreover, research has suggested a link between amphibian…
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