Exposure to the antifouling chemical medetomidine slows development, reduces body mass, and delays metamorphosis in wood frog (Lithobates sylvaticus) tadpoles
| Autor: | Julia R. Palmucci, Janine M. Barr, Peter P. Fong, Olivia J. Lambert |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Ranidae Health Toxicology and Mutagenesis media_common.quotation_subject Zoology 010501 environmental sciences 010603 evolutionary biology 01 natural sciences Biofouling Developmental timing medicine Environmental Chemistry Ecotoxicology Animals Metamorphosis 0105 earth and related environmental sciences media_common biology Lithobates Metamorphosis Biological General Medicine Medetomidine biology.organism_classification Pollution Tadpole Larva Toxicity Water Pollutants Chemical medicine.drug |
| Zdroj: | Environmental science and pollution research international. 25(11) |
| ISSN: | 1614-7499 |
| Popis: | Antifouling chemicals have a long history of causing toxicity to aquatic organisms. We measured growth and developmental timing in wood frog tadpoles exposed to the antifouling chemical medetomidine (10 nM–10 μM) starting at two different developmental stages in static renewal experiments. For tadpoles hatched from egg masses and exposed for 3 weeks to 100 nM and 1 μM, head width/total body length ratio was significantly shorter compared to control. For field-collected tadpoles at Gosner stage 24–25 and exposed for 2 weeks, 1 and 10 μM medetomidine significantly slowed development as measured by Gosner stage. Medetomidine (1 and 10 μM) significantly increased the time to metamorphosis by over 16 days on average, and at 100 nM and 1 μM, it significantly decreased mass at metamorphosis. We discuss the possible effects of antifouling chemicals containing medetomidine on globally threatened groups such as amphibians. |
| Databáze: | OpenAIRE |
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