| effects of the herbicide imazapyr on juvenile oregon spotted frogs. | conflict between native amphibians and aquatic weed management in the pacific northwest is rarely recognized because most native stillwater-breeding amphibian species move upland during summer, when herbicide application to control weeds in aquatic habitats typically occurs. however, aquatic weed management may pose a risk for aquatic species present in wetlands through the summer, such as the oregon spotted frog (osf, rana pretiosa), a state endangered species in washington. acute toxicity of h ... | 2013 | 23147474 |
| widespread occurrence of the chytrid fungus batrachochytrium dendrobatidis on oregon spotted frogs (rana pretiosa). | the pathogen batrachochytrium dendrobatidis (bd) has been associated with amphibian declines in multiple continents, including western north america. we investigated bd prevalence in oregon spotted frog (rana pretiosa), a species that has declined across its range in the pacific northwest. polymerase chain reaction analysis of skin swabs indicated that bd was prevalent within populations (420 of 617 juvenile and adults) and widespread among populations (36 of 36 sites) where we sampled r. pretio ... | 2009 | 19526269 |