Search Results for: Rana sylvatica
New effects of Roundup on amphibians: predators reduce herbicide mortality; herbicides induce antipredator morphology
Abstract: The use of pesticides is important for growing crops and protecting human health by reducing the prevalence of targeted pest species. However, less attention is given to the potential unintended effects on nontarget species, including taxonomic groups that are of current conservation concern. One issue raised in recent years is the potential for pesticides …
The toxicity of Roundup Original Max to 13 species of larval amphibians
Abstract: With the increased use of glyphosate-based herbicides (marketed under several names, including Roundup and Vision), there has been a concomitant increased concern about the unintended impacts that particular formulations containing the popular surfactant polyethoxylated tallowamine (POEA) might have on amphibians. Published studies have examined a relatively small number of anuran species (primarily from Australia and …
Roundup and amphibians: the importance of concentration, application time, and stratification
Abstract: The widespread use of pesticides raises the possibility that non-target organisms might also be affected. To assess this, the traditional approach has been to conduct short-term laboratory experiments spanning a range of lethal concentrations and some longer-duration experiments at sublethal concentrations. While this approach has been very useful, less attention has been paid to …
The lethal impacts of Roundup and predatory stress on six species of North American tadpoles
Abstract: The decline in amphibians across the globe has sparked a search for the causes, and recent evidence suggests a connection with pesticides. However, for most pesticides, tests on amphibians are rare and conducted only for short durations (1 to 4 days) and without natural stressors. Recent studies have discovered that the stress of predator …
The impact of insecticides and herbicides on the biodiversity and productivity of aquatic communities
Abstract: Pesticides constitute a major anthropogenic addition to natural communities. In aquatic communities, a great majority of pesticide impacts are determined from single‐species experiments conducted under laboratory conditions. Although this is an essential protocol to rapidly identify the direct impacts of pesticides on organisms, it prevents an assessment of direct and indirect pesticide effects on …
Toxicity of glyphosate‐based pesticides to four North American frog species
Abstract: Gyphosate‐basedherbicides are among the most widely used pesticides in the world. We compared the acute toxicity of the glyphosate end‐use formulation Roundup Original® to four North American amphibian species (Rana clamitans, R. pipiens, R. sylvatica, and Bufo americanus) and the toxicity of glyphosate technical, the polyethoxylated tallowamine surfactant (POEA) commonly used in glyphosate‐based herbicides, …