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Acute and chronic toxicity of Roundup Weathermax and Ignite 280 SL to larval Spea multiplicata and S. bombifrons from the Southern High Plains, USA

Citation

Acute and chronic toxicity of Roundup Weathermax and Ignite 280 SL to larval Spea multiplicata and S. bombifrons from the Southern High Plains, USA: Environmental pollution (Barking, Essex: 1987)Environ. Pollut., v. 158, iss. 8, p. 2610-2617.

Summary

Pesticides have been implicated in widespread amphibian declines. We assessed acute and chronic toxicity of two widely used herbicides to larval New Mexico (Spea multiplicata) and Plains (S. bombifrons) spadefoots from cropland and native grassland playas. Roundup WeatherMAX (WM) toxicity estimates (48- and 216-h LC(50); 48-h LC(1)) for both species were similar to environmental concentrations expected from accidental overspray. Chronic (30-day) exposure to WM at predicted environmental concentrations (2.0 and 2.8 mg glyphosate acid equivalents/L) reduced survival of both species. Ignite 280 SL (IG) toxicity estimates (48-h LC(50) and LC(1)) for both species were above predicted environmental concentrations of 1.0 mg glufosinate/L. [...]

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  • Integrated Landscape Modeling (ILM)

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notePMID: 20541298
journalEnvironmental pollution (Barking, Essex: 1987)Environ. Pollut.
parts
typevolume
value158
typeissue
value8
typepages
value2610-2617
citationTypejournal

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