Differential Uptake of Endosulfan in the South American Toad Under Sublethal Exposure

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Agroecosystems are usually polluted with a wide variety of contaminants with pesticides being very frequently detected. Endosulfan, an organochlorine pesticide, has been shown to cause both lethal and sublethal effects on aquatic organisms such as amphibians and especially on its early developmental...

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Autores principales: Svartz, Gabriela Verónica, Marino, Damián José Gabriel, Ronco, Alicia Estela, Pérez Coll, Cristina Silvia
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Ciencias Exactas
Endosulfan
Organochlorine Pesticide
United States Environmental Protection Agency
Diazinon
Biomagnification
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/131442
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-131442
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Endosulfan
Organochlorine Pesticide
United States Environmental Protection Agency
Diazinon
Biomagnification
spellingShingle Ciencias Exactas
Endosulfan
Organochlorine Pesticide
United States Environmental Protection Agency
Diazinon
Biomagnification
Svartz, Gabriela Verónica
Marino, Damián José Gabriel
Ronco, Alicia Estela
Pérez Coll, Cristina Silvia
Differential Uptake of Endosulfan in the South American Toad Under Sublethal Exposure
topic_facet Ciencias Exactas
Endosulfan
Organochlorine Pesticide
United States Environmental Protection Agency
Diazinon
Biomagnification
description Agroecosystems are usually polluted with a wide variety of contaminants with pesticides being very frequently detected. Endosulfan, an organochlorine pesticide, has been shown to cause both lethal and sublethal effects on aquatic organisms such as amphibians and especially on its early developmental stages. In this context, the aim of this study was to evaluate the uptake of environmentally relevant concentrations of endosulfan and its correlation with differential sensitivity in the early development stages of the common South American toad, <i>Rhinella arenarum</i>. Embryos and larvae were exposed to sublethal concentrations of endosulfan for several periods of exposures. According to the developmental stage at which they were exposed, the uptake rate was different. Bioconcentration factors (BCFs) for embryos significantly decreased with exposure time and concentration (p < 0.05) reaching a BCF of ≤1679 for embryos at 96 h of exposure to 0.001 mg endosulfan L⁻¹. BCFs for larvae significantly increased with exposure time (p < 0.05) obtaining a maximum of 40 at 504 h. In our previous study, we reported that embryos were less sensitive to the effects of endosulfan than larvae, which is in line with the main tendency of embryos to bioconcentrate endosulfan as observed in this study.
format Articulo
Articulo
author Svartz, Gabriela Verónica
Marino, Damián José Gabriel
Ronco, Alicia Estela
Pérez Coll, Cristina Silvia
author_facet Svartz, Gabriela Verónica
Marino, Damián José Gabriel
Ronco, Alicia Estela
Pérez Coll, Cristina Silvia
author_sort Svartz, Gabriela Verónica
title Differential Uptake of Endosulfan in the South American Toad Under Sublethal Exposure
title_short Differential Uptake of Endosulfan in the South American Toad Under Sublethal Exposure
title_full Differential Uptake of Endosulfan in the South American Toad Under Sublethal Exposure
title_fullStr Differential Uptake of Endosulfan in the South American Toad Under Sublethal Exposure
title_full_unstemmed Differential Uptake of Endosulfan in the South American Toad Under Sublethal Exposure
title_sort differential uptake of endosulfan in the south american toad under sublethal exposure
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/131442
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AT marinodamianjosegabriel differentialuptakeofendosulfaninthesouthamericantoadundersublethalexposure
AT roncoaliciaestela differentialuptakeofendosulfaninthesouthamericantoadundersublethalexposure
AT perezcollcristinasilvia differentialuptakeofendosulfaninthesouthamericantoadundersublethalexposure
bdutipo_str Repositorios
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