Aquatic ecotoxicology: Native freshwater gastropods from Argentina

The increasing worldwide contamination of freshwater systems with a wide range of chemical compounds is one of the main environmental problems that humanity faces nowadays. These contaminants, such as pesticides, disturb natural ecosystems and can have a great impact on the species that inhabit them...

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Autores principales:	Cossi, P.F., Herbert, L.T., Boburg, B., Kristoff, G.
Formato:	CHAP
Materias:	Azinphos-methyl Biomarkers Freshwater gastropods Native species Pesticides
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_97815361_v_n_p23_Cossi
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_97815361_v_n_p23_Cossi
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spelling	todo:paper_97815361_v_n_p23_Cossi2023-10-03T16:43:50Z Aquatic ecotoxicology: Native freshwater gastropods from Argentina Cossi, P.F. Herbert, L.T. Boburg, B. Kristoff, G. Azinphos-methyl Biomarkers Freshwater gastropods Native species Pesticides The increasing worldwide contamination of freshwater systems with a wide range of chemical compounds is one of the main environmental problems that humanity faces nowadays. These contaminants, such as pesticides, disturb natural ecosystems and can have a great impact on the species that inhabit them. Traditionally, environmental monitoring programs were based on detecting and determining the concentration of contaminants. However, they did not necessarily reflect the actual impact on the environment. Lately, programs have included bioassays and sensitive biomarkers as effective tools to obtain an integrated overview of aquatic ecotoxicology. Our research group uses bioassays to study whether environmental concentrations of toxic compounds used in Argentina can produce effects on native gastropods. Our research lines involve the native freshwater snails Biomphalaria straminea, widely distributed in northeastern Argentina, and Chilina gibbosa, endemic to freshwaters of the Argentine Patagonia. The first studies we carried out were focused on the organophosphate azinphos-methyl, which has been detected in freshwater courses at concentrations higher than those recommended for aquatic life protection. We found different sublethal effects after exposures to environmental concentrations in both species. B. straminea is resistant to an acute exposure but shows toxic effects after subchronic exposures, which has driven further studies on reproduction and offspring. C. gibbosa, however, is highly sensitive to azinphos-methyl, which has led us to consider it as a sentinel species. Our research allows us to contribute with a wide range of biomarker information, propose new sentinel species and provide data to reassess current guidelines for aquatic life protection. © 2017 Nova Science Publishers, Inc. All rights reserved. CHAP info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_97815361_v_n_p23_Cossi
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Azinphos-methyl Biomarkers Freshwater gastropods Native species Pesticides
spellingShingle	Azinphos-methyl Biomarkers Freshwater gastropods Native species Pesticides Cossi, P.F. Herbert, L.T. Boburg, B. Kristoff, G. Aquatic ecotoxicology: Native freshwater gastropods from Argentina
topic_facet	Azinphos-methyl Biomarkers Freshwater gastropods Native species Pesticides
description	The increasing worldwide contamination of freshwater systems with a wide range of chemical compounds is one of the main environmental problems that humanity faces nowadays. These contaminants, such as pesticides, disturb natural ecosystems and can have a great impact on the species that inhabit them. Traditionally, environmental monitoring programs were based on detecting and determining the concentration of contaminants. However, they did not necessarily reflect the actual impact on the environment. Lately, programs have included bioassays and sensitive biomarkers as effective tools to obtain an integrated overview of aquatic ecotoxicology. Our research group uses bioassays to study whether environmental concentrations of toxic compounds used in Argentina can produce effects on native gastropods. Our research lines involve the native freshwater snails Biomphalaria straminea, widely distributed in northeastern Argentina, and Chilina gibbosa, endemic to freshwaters of the Argentine Patagonia. The first studies we carried out were focused on the organophosphate azinphos-methyl, which has been detected in freshwater courses at concentrations higher than those recommended for aquatic life protection. We found different sublethal effects after exposures to environmental concentrations in both species. B. straminea is resistant to an acute exposure but shows toxic effects after subchronic exposures, which has driven further studies on reproduction and offspring. C. gibbosa, however, is highly sensitive to azinphos-methyl, which has led us to consider it as a sentinel species. Our research allows us to contribute with a wide range of biomarker information, propose new sentinel species and provide data to reassess current guidelines for aquatic life protection. © 2017 Nova Science Publishers, Inc. All rights reserved.
format	CHAP
author	Cossi, P.F. Herbert, L.T. Boburg, B. Kristoff, G.
author_facet	Cossi, P.F. Herbert, L.T. Boburg, B. Kristoff, G.
author_sort	Cossi, P.F.
title	Aquatic ecotoxicology: Native freshwater gastropods from Argentina
title_short	Aquatic ecotoxicology: Native freshwater gastropods from Argentina
title_full	Aquatic ecotoxicology: Native freshwater gastropods from Argentina
title_fullStr	Aquatic ecotoxicology: Native freshwater gastropods from Argentina
title_full_unstemmed	Aquatic ecotoxicology: Native freshwater gastropods from Argentina
title_sort	aquatic ecotoxicology: native freshwater gastropods from argentina
url	http://hdl.handle.net/20.500.12110/paper_97815361_v_n_p23_Cossi
work_keys_str_mv	AT cossipf aquaticecotoxicologynativefreshwatergastropodsfromargentina AT herbertlt aquaticecotoxicologynativefreshwatergastropodsfromargentina AT boburgb aquaticecotoxicologynativefreshwatergastropodsfromargentina AT kristoffg aquaticecotoxicologynativefreshwatergastropodsfromargentina
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Aquatic ecotoxicology: Native freshwater gastropods from Argentina

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