A Pilot Evaluation of the Toxicity of EarthTec® QZ on Invasive (Bithynia tentaculata) and Native (Physa gyrina) Snail Species from the Upper Mississippi River
| Autor: | Nadia Carmosini, Gregory J. Sandland, Abdelrahman Ismail, Rick Gillis |
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| Rok vydání: | 2018 |
| Předmět: |
inorganic chemicals
0106 biological sciences Embryo Nonmammalian Molluscacides Health Toxicology and Mutagenesis Snails Zoology Embryonic Development Introduced species Pilot Projects Snail Biology Toxicology 010603 evolutionary biology 01 natural sciences Bithynia tentaculata Rivers Species Specificity biology.animal medicine Animals Hatching 010604 marine biology & hydrobiology Copper toxicity Tentaculata General Medicine Physa biology.organism_classification medicine.disease Pollution Molluscicide Copper Water Pollutants Chemical |
| Zdroj: | Bulletin of environmental contamination and toxicology. 101(4) |
| ISSN: | 1432-0800 |
| Popis: | We used a comparative approach to investigate the effects of a copper-based pesticide (EarthTec® QZ) on embryos of an invasive snail (Bithynia tentaculata) and a native snail (Physa gyrina). Embryos were exposed to one of three treatments: control (0 mg/L Cu2+), low-dose (0.1 mg/L Cu2+), or high-dose (0.6 mg/L Cu2+), which reflect manufacturer-recommended low and medium 4-day molluscicide treatment concentrations. Exposure to 0.6 mg/L Cu2+ over 4 days generated 100% mortality in both invasive and native snail embryos; however, reducing the exposure time from 4 to 1 day resulted in 100% mortality in B. tentaculata but some hatching (7%) in P. gyrina. In contrast, embryos of both species exposed to 0.1 mg/L Cu2+ treatment for 4 days showed almost 100% survivorship. Further manipulations of Cu2+ concentrations and exposure times may yield regimes that maximize mortality in B. tentaculata while minimizing negative impacts on native species. |
| Databáze: | OpenAIRE |
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