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dc.contributor.author
Natale, Guillermo Sebastian
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dc.contributor.author
Ammassari, Luciana Lorena
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dc.contributor.author
Basso, Nestor Guillermo
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dc.contributor.author
Ronco, Alicia Estela
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dc.date.available
2020-04-17T14:01:20Z
dc.date.issued
2006-10
dc.identifier.citation
Natale, Guillermo Sebastian; Ammassari, Luciana Lorena; Basso, Nestor Guillermo; Ronco, Alicia Estela; Acute and chronic effects of Cr (VI) on Hypsiboas pulchellus embryos and tadpoles; Inter-Research; Diseases Of Aquatic Organisms; 72; 10-2006; 261-267
dc.identifier.issn
0177-5103
dc.identifier.uri
http://hdl.handle.net/11336/102854
dc.description.abstract
In the last few years there has been a great concern about declines in the abundance of several species of amphibians around the world. Among amphibians, anurans have a biphasic life cycle, mostly with aquatic tadpoles and terrestrial adults, and they have an extremely permeable skin, playing as excellent indicators of the health of the environment. A number of different causes for anurans global decline have been suggested, being the pollution of their habitat by chemical stressors considered one of the major factors. Among chemical stressors, heavy metals are known for their high toxicity at very low concentrations. This study assess short (96 h-acute) and long term (1272 h-chronic) exposure to Cr(VI) at lethal and sub lethal concentration levels (between 3 and 90; and 0.001 and 12 mg/L, respectively) on Hyla pulchella tadpoles (Fam. Hylidae) from central eastern Argentina. Fertilized eggs collected from a clean pond near La Plata (Buenos Aires Province) were used for acute and chronic toxicity testing. Assays were done under laboratory controlled conditions (pH 7.6-8.3; hardness 250 mg CO3Ca/L, continuous aeration, temperature 25°C±1, light:darkness 16:8 h). Results of chronic exposure were used to assess the effect of factors such as toxicant concentration and age of organisms at the beginning of exposure on the response variables (growth, development and survival until the time of first metamorphose). Results indicate higher sensitivity to Cr(VI) of larvae respect to embryo during acute and chronic exposure. Exposure to the highest sub lethal concentrations (6 to 12 mg/L) of the toxicant shows on all treated organisms early inhibitory effects on growth, compensated at longer exposure periods with an increment in the growth rate, even higher than control groups.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Inter-Research
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ANURANS
dc.subject
HYLA PULCHELLA
dc.subject
HYPSIBOAS PULCHELLUS
dc.subject
EMBRYO
dc.subject
LARVAE
dc.subject
TOXICITY
dc.subject
GROWTH
dc.subject
SURVIVAL
dc.subject
CR(VL)
dc.subject.classification
Otros Tópicos Biológicos
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Acute and chronic effects of Cr (VI) on Hypsiboas pulchellus embryos and tadpoles
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-04-06T16:06:27Z
dc.journal.volume
72
dc.journal.pagination
261-267
dc.journal.pais
Alemania
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dc.description.fil
Fil: Natale, Guillermo Sebastian. Universidad Nacional de la Plata. Facultad de Cs.exactas. Centro de Investigaciones del Medio Ambiente. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - la Plata. Centro de Investigaciones del Medio Ambiente.; Argentina
dc.description.fil
Fil: Ammassari, Luciana Lorena. Universidad Nacional de la Plata. Facultad de Cs.exactas. Centro de Investigaciones del Medio Ambiente. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - la Plata. Centro de Investigaciones del Medio Ambiente.; Argentina
dc.description.fil
Fil: Basso, Nestor Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
dc.description.fil
Fil: Ronco, Alicia Estela. Universidad Nacional de la Plata. Facultad de Cs.exactas. Centro de Investigaciones del Medio Ambiente. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - la Plata. Centro de Investigaciones del Medio Ambiente.; Argentina
dc.journal.title
Diseases Of Aquatic Organisms
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.int-res.com/abstracts/dao/v72/n3/p261-267
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3354/dao072261
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