A5075942116- Amphibian and Reptile Biology
- Animal Behavior and Reproduction
- Turtle Biology and Conservation
- Species Distribution and Climate Change
- Primate Behavior and Ecology
- Coastal and Marine Management
- Fungal Infections and Studies
- Mosquito-borne diseases and control
- Viral Infections and Vectors
- Bacterial Identification and Susceptibility Testing
Oregon State University
2008-2019
University of San Diego
2017-2018
Contributing to the worldwide biodiversity crisis are emerging infectious diseases, which can lead extirpations and extinctions of hosts. For example, fungal pathogen Batrachochytrium dendrobatidis (Bd) is associated with amphibian population declines extinctions. Sensitivity Bd varies species, season, life stage. However, there little information on whether sensitivity differs among populations, essential for understanding Bd-infection dynamics formulating conservation strategies. We...
Many climate change models predict increases in frequency and magnitude of temperature fluctuations that might impact how ectotherms are affected by disease. Shifts especially affect amphibians, a group with populations have been challenged several pathogens. Because amphibian hosts invest more immunity at warmer than cooler temperatures parasites acclimate to shifts faster (creating lags optimal host immunity), researchers hypothesized shift from cold-to-warm result increased sensitivity...
Environmental variation favors the evolution of phenotypic plasticity. For many species, we understand costs and benefits different phenotypes, but lack a broad understanding how plastic traits evolve across large clades. Using identical experiments conducted North America, examined prey responses to predator cues. We quantified five life‐history magnitude their plasticity for 23 amphibian species/populations (spanning three families genera) when exposed no cues, crushed‐egg predatory...
Carotenoids are considered beneficial nutrients because they provide increased immune capacity. Although carotenoid research has been conducted in many vertebrates, little done amphibians, a group that is experiencing global population declines from numerous causes, including disease. We raised two amphibian species through metamorphosis on three diets to quantify the effects life-history traits and post-metamorphic susceptibility fungal pathogen (Batrachochytrium dendrobatidis; Bd)....
Parasites and pathogens are often aggregated in a minority of susceptible hosts within population, with majority individuals harboring low infection intensities. However, determining the relative importance host traits to explain this heterogeneity is challenge. One ecologically important pathogen Batrachochytrium dendrobatidis (Bd), which causes disease chytridiomycosis has been associated many amphibian population declines worldwide. For hosts, post-metamorphic stages generally more than...
Abstract Many climate change models predict increases in mean temperature, and frequency magnitude of temperature fluctuations. These potential shifts may impact ectotherms several ways, including how they are affected by disease. Shifts especially affect amphibians, a group with populations that have been challenged pathogens. Because amphibian hosts invest more immunity at warmer than cooler temperatures parasites acclimate to faster (creating lags optimal host immunity), researchers...