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Effects of two stressors on amphibian larval development
- Source :
- Ecotoxicology and environmental safety. 79
- Publication Year :
- 2011
-
Abstract
- In parallel with a renewed interest in nuclear power and its possible environmental impacts, a new environmental radiation protection system calls for environmental indicators of radiological stress. However, because environmental stressors seldom occur alone, this study investigated the combined effects of an ecological stressor (larval density) and an anthropogenic stressor (ionizing radiation) on amphibians. Scaphiopus holbrookii tadpoles reared at different larval densities were exposed to four low irradiation dose rates (0.13, 2.4, 21, and 222 mGy d(-1)) from (137)Cs during the sensitive period prior to and throughout metamorphosis. Body size at metamorphosis and development rate served as fitness correlates related to population dynamics. Results showed that increased larval density decreased body size but did not affect development rate. Low dose rate radiation had no impact on either endpoint.
- Subjects :
- Amphibian
Water Pollutants, Radioactive
Health, Toxicology and Mutagenesis
media_common.quotation_subject
Population
Biology
Environment
Population density
Ionizing radiation
Amphibians
Stress, Physiological
biology.animal
Animals
Body Size
Metamorphosis
education
media_common
Population Density
Larva
education.field_of_study
Ecology
Stressor
Public Health, Environmental and Occupational Health
Metamorphosis, Biological
General Medicine
biology.organism_classification
Pollution
Cesium Radioisotopes
Female
Anura
Scaphiopus holbrookii
Subjects
Details
- ISSN :
- 10902414
- Volume :
- 79
- Database :
- OpenAIRE
- Journal :
- Ecotoxicology and environmental safety
- Accession number :
- edsair.doi.dedup.....ea0273c0ed1c59d0474a9eae25ecbad4