Toxicity Persistence Following an Experimental Cypermethrin and Chlorpyrifos Application in Pampasic Surface Waters (Buenos Aires, Argentina)
The Pampa plain is intensively cultivated, the genetically modified glyphosate-resistant soybean being the main culture. A small first-order stream draining a cultured farm was studied. During the dry 2007 spring, the channel became a wetland with remnant intercalated shallow pools. Toxicity persist...
| Autores: | , , , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2010 |
| País: | Argentina |
| Recursos: | Universidad Nacional de La Plata |
| Repositorio: | SEDICI (UNLP) |
| Idioma: | inglés |
| OAI Identifier: | oai:sedici.unlp.edu.ar:10915/136080 |
| Acesso em linha: | http://sedici.unlp.edu.ar/handle/10915/136080 |
| Access Level: | acceso abierto |
| Palavra-chave: | Ciencias Exactas Química Cypermethrin Chlorpyrifos Toxicity Persistence |
| Resumo: | The Pampa plain is intensively cultivated, the genetically modified glyphosate-resistant soybean being the main culture. A small first-order stream draining a cultured farm was studied. During the dry 2007 spring, the channel became a wetland with remnant intercalated shallow pools. Toxicity persistence of cypermethrin and chlorpyrifos to the amphipod <i>Hyallela curvispina</i> was assessed following a simulated plane application in the recently formed pools. In situ exposures and laboratory toxicity tests were performed. An ephemeral toxicity pulse lasting 4 h after the application and mortality cessation following that was observed. |
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