Lethal and sublethal effects of cypermethrin to Hypsiboas pulchellus tadpoles

The study of the effects of the insecticide cypermethrin (CY) technical grade and its Sherpa® commercial formulation on Hypsiboas pulchellus tadpoles assessing lethality, behavior, growth, and abnormalities under standardized laboratory conditions is reported. Observed behaviors were identified and...

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Autores principales: Agostini, María Gabriela, Natale, Guillermo Sebastián, Ronco, Alicia Estela
Formato: Articulo
Lenguaje:Inglés
Publicado: 2010
Materias:
Química
Ciencias Naturales
Abnormalities
Behavior
Cypermethrin
Growth
Hypsiboas pulchellus
Mortality
Tadpoles
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/134773
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-134773
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Ciencias Naturales
Abnormalities
Behavior
Cypermethrin
Growth
Hypsiboas pulchellus
Mortality
Tadpoles
spellingShingle Química
Ciencias Naturales
Abnormalities
Behavior
Cypermethrin
Growth
Hypsiboas pulchellus
Mortality
Tadpoles
Agostini, María Gabriela
Natale, Guillermo Sebastián
Ronco, Alicia Estela
Lethal and sublethal effects of cypermethrin to Hypsiboas pulchellus tadpoles
topic_facet Química
Ciencias Naturales
Abnormalities
Behavior
Cypermethrin
Growth
Hypsiboas pulchellus
Mortality
Tadpoles
description The study of the effects of the insecticide cypermethrin (CY) technical grade and its Sherpa® commercial formulation on Hypsiboas pulchellus tadpoles assessing lethality, behavior, growth, and abnormalities under standardized laboratory conditions is reported. Observed behaviors were identified and categorized by means of a ranking system according to the loss of mobility. Results of acute lethal effects indicate higher potency for Sherpa® at this level of assessment. All effects on behavior showed an increasing degree of injury as insecticide concentration increased. Organisms exposed to technical grade CY showed lower body length with respect to controls from 3.44 µg CY/L to higher concentrations, whereas those exposed to Sherpa® exhibited lower growth from 0.83 µg CY/L. Both forms of the tested insecticide caused abnormalities between 0.34 and 4.18 µg CY/L, but 100% of malformed individuals was detected from 34.4 µg CY/L for those exposed to the technical grade CY, and from 8.36 µg CY/L for those exposed to Sherpa®. This study proposes the use of easily identifiable and distinguishable sublethal end-points. The high input loads of CY in natural environments, the detected concentrations in the field, in addition to the low levels of this insecticide required to induce sublethal effects (which could eventually lead to death), allow for the conclusion that the insecticide is a risk factor for amphibians inhabiting agroecosystems.
format Articulo
Articulo
author Agostini, María Gabriela
Natale, Guillermo Sebastián
Ronco, Alicia Estela
author_facet Agostini, María Gabriela
Natale, Guillermo Sebastián
Ronco, Alicia Estela
author_sort Agostini, María Gabriela
title Lethal and sublethal effects of cypermethrin to Hypsiboas pulchellus tadpoles
title_short Lethal and sublethal effects of cypermethrin to Hypsiboas pulchellus tadpoles
title_full Lethal and sublethal effects of cypermethrin to Hypsiboas pulchellus tadpoles
title_fullStr Lethal and sublethal effects of cypermethrin to Hypsiboas pulchellus tadpoles
title_full_unstemmed Lethal and sublethal effects of cypermethrin to Hypsiboas pulchellus tadpoles
title_sort lethal and sublethal effects of cypermethrin to hypsiboas pulchellus tadpoles
publishDate 2010
url http://sedici.unlp.edu.ar/handle/10915/134773
work_keys_str_mv AT agostinimariagabriela lethalandsublethaleffectsofcypermethrintohypsiboaspulchellustadpoles
AT nataleguillermosebastian lethalandsublethaleffectsofcypermethrintohypsiboaspulchellustadpoles
AT roncoaliciaestela lethalandsublethaleffectsofcypermethrintohypsiboaspulchellustadpoles
bdutipo_str Repositorios
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