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Artículo

Comparative toxicity of cypermethrin and a commercial formulation on Rhinella arenarum larval development (Anura: Bufonidae)

Svartz, Gabriela VeronicaIcon ; Perez Coll, Cristina SilviaIcon
Fecha de publicación: 06/2013
Editorial: Inderscience Enterprises
Revista: International Journal of Environment and Health
ISSN: 1743-4963
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Ciencias Medioambientales

Resumen

In this study we reported the effects of cypermethrin (CY), a growing use insecticide, comparing the toxicity of the active ingredient (AI) and a commercial formulation (CF) on a non-target organism, Rhinella arenarum. The results showed a highly significant increase (p<0.05) in the toxicity of both substances over time, obtaining a 96 h LC-50 of 28.07 mg CY/L and 11.20 mg CY/L, and a 336 h LC-50 of 0.0048 mg CY/L and 0.00065 mg CY/L, for AI and CF respectively. Furthermore, the toxicity of CF was greater than AI at all exposure periods, reaching up to 7 times. The main sublethal effects were associated with alterations in behaviour as hyperkinesia and spasmodic contractions up to total absence of movements. Considering these results and the obtained by means of the risk assessment conducted, we can conclude that this pesticide represents a potential direct risk considering lethality, or indirect by means of its sublethal effects for the survival of this amphibian in agroecosystems.
Palabras clave: Rhinella arenarum , larval development , amphibian , tadpoles , cypermethrin , agrochemicals , lethal effects , sublethal effects , morphological alterations , toxicity bioassays
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/86432
DOI: http://dx.doi.org/10.1504/IJENVH.2013.056973
URL: http://www.inderscience.com/offer.php?id=56973
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Citación
Svartz, Gabriela Veronica; Perez Coll, Cristina Silvia; Comparative toxicity of cypermethrin and a commercial formulation on Rhinella arenarum larval development (Anura: Bufonidae); Inderscience Enterprises; International Journal of Environment and Health; 6; 4; 6-2013; 320-329
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