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Multi-Level Effects Of Low Dose Rate Ionizing Radiation On Southern Toad, Anaxyrus [Bufo] Terrestris, Karolina Stark, David E. Scott, Olga Tsyusko, Daniel P. Coughlin, Thomas G. Hinton
Multi-Level Effects Of Low Dose Rate Ionizing Radiation On Southern Toad, Anaxyrus [Bufo] Terrestris, Karolina Stark, David E. Scott, Olga Tsyusko, Daniel P. Coughlin, Thomas G. Hinton
Plant and Soil Sciences Faculty Publications
Despite their potential vulnerability to contaminants from exposure at multiple life stages, amphibians are one of the least studied groups of vertebrates in ecotoxicology, and research on radiation effects in amphibians is scarce. We used multiple endpoints to assess the radiosensitivity of the southern toad (Anaxyrus [Bufo] terrestris) during its pre-terrestrial stages of development -embryonic, larval, and metamorphic. Toads were exposed, from several hours after oviposition through metamorphosis (up to 77 days later), to four low dose rates of 137Cs at 0.13, 2.4, 21, and 222 mGy d-1, resulting in total doses up to 15.8 …