Effects of paraquat on mortality and cardiorespiratory function of catfish fry Plecostomus commersoni

The effects of a paraquat commercial herbicide formulation on an early stage of the development of Plecostomus commersoni were evaluated. Mortality, opercular ventilation rate, cardiac contraction rate and body length and weight were examined every 12 hr. The effects of the paraquat formulation on t...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Tortorelli, M.C., Hernández, D.A., Vázquez, G.R., Salibián, A.
Formato: JOUR
Materias:
paraquat
animal experiment
article
fish
heart function
histology
lc 50
mortality
nonhuman
priority journal
respiratory system
toxicity
Animals
Argentina
Catfishes
Female
Hemodynamic Processes
Oxygen Consumption
Paraquat
Animalia
Plecostomus
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00904341_v19_n4_p523_Tortorelli
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00904341_v19_n4_p523_Tortorelli
record_format dspace
spelling todo:paper_00904341_v19_n4_p523_Tortorelli2023-10-03T14:54:35Z Effects of paraquat on mortality and cardiorespiratory function of catfish fry Plecostomus commersoni Tortorelli, M.C. Hernández, D.A. Vázquez, G.R. Salibián, A. paraquat animal experiment article fish heart function histology lc 50 mortality nonhuman priority journal respiratory system toxicity Animals Argentina Catfishes Female Hemodynamic Processes Oxygen Consumption Paraquat Animalia Plecostomus The effects of a paraquat commercial herbicide formulation on an early stage of the development of Plecostomus commersoni were evaluated. Mortality, opercular ventilation rate, cardiac contraction rate and body length and weight were examined every 12 hr. The effects of the paraquat formulation on the morphology of the branchial epithelium were also examined by light microscopy. The assayed paraquat formulation significantly affected cardiac contraction and opercular ventilation. Ecotoxicologically, this could represent an important deleterious effect for early development of the catfish. Mortality data may not be sufficient for an appropriate evaluation of secondary environmental hazards associated with the application of paraquat formulation because: a) The LC-50 values for Plecostomus commersoni fry were higher than the recommended individual application rate of paraquat for aquatic weed control (0.1-2.0 mg/L). b) The estimated maximum acceptable toxicant concentration (MATC) resulted in a concentration similar to the application rate when calculated from acute toxicity tests. When the MATC was estimated from opercular ventilation or cardiac contraction rates, it was lower and fell within the recommended single application rate. © 1990 Springer-Verlag New York Inc. Fil:Hernández, D.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00904341_v19_n4_p523_Tortorelli
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic paraquat
animal experiment
article
fish
heart function
histology
lc 50
mortality
nonhuman
priority journal
respiratory system
toxicity
Animals
Argentina
Catfishes
Female
Hemodynamic Processes
Oxygen Consumption
Paraquat
Animalia
Plecostomus
spellingShingle paraquat
animal experiment
article
fish
heart function
histology
lc 50
mortality
nonhuman
priority journal
respiratory system
toxicity
Animals
Argentina
Catfishes
Female
Hemodynamic Processes
Oxygen Consumption
Paraquat
Animalia
Plecostomus
Tortorelli, M.C.
Hernández, D.A.
Vázquez, G.R.
Salibián, A.
Effects of paraquat on mortality and cardiorespiratory function of catfish fry Plecostomus commersoni
topic_facet paraquat
animal experiment
article
fish
heart function
histology
lc 50
mortality
nonhuman
priority journal
respiratory system
toxicity
Animals
Argentina
Catfishes
Female
Hemodynamic Processes
Oxygen Consumption
Paraquat
Animalia
Plecostomus
description The effects of a paraquat commercial herbicide formulation on an early stage of the development of Plecostomus commersoni were evaluated. Mortality, opercular ventilation rate, cardiac contraction rate and body length and weight were examined every 12 hr. The effects of the paraquat formulation on the morphology of the branchial epithelium were also examined by light microscopy. The assayed paraquat formulation significantly affected cardiac contraction and opercular ventilation. Ecotoxicologically, this could represent an important deleterious effect for early development of the catfish. Mortality data may not be sufficient for an appropriate evaluation of secondary environmental hazards associated with the application of paraquat formulation because: a) The LC-50 values for Plecostomus commersoni fry were higher than the recommended individual application rate of paraquat for aquatic weed control (0.1-2.0 mg/L). b) The estimated maximum acceptable toxicant concentration (MATC) resulted in a concentration similar to the application rate when calculated from acute toxicity tests. When the MATC was estimated from opercular ventilation or cardiac contraction rates, it was lower and fell within the recommended single application rate. © 1990 Springer-Verlag New York Inc.
format JOUR
author Tortorelli, M.C.
Hernández, D.A.
Vázquez, G.R.
Salibián, A.
author_facet Tortorelli, M.C.
Hernández, D.A.
Vázquez, G.R.
Salibián, A.
author_sort Tortorelli, M.C.
title Effects of paraquat on mortality and cardiorespiratory function of catfish fry Plecostomus commersoni
title_short Effects of paraquat on mortality and cardiorespiratory function of catfish fry Plecostomus commersoni
title_full Effects of paraquat on mortality and cardiorespiratory function of catfish fry Plecostomus commersoni
title_fullStr Effects of paraquat on mortality and cardiorespiratory function of catfish fry Plecostomus commersoni
title_full_unstemmed Effects of paraquat on mortality and cardiorespiratory function of catfish fry Plecostomus commersoni
title_sort effects of paraquat on mortality and cardiorespiratory function of catfish fry plecostomus commersoni
url http://hdl.handle.net/20.500.12110/paper_00904341_v19_n4_p523_Tortorelli
work_keys_str_mv AT tortorellimc effectsofparaquatonmortalityandcardiorespiratoryfunctionofcatfishfryplecostomuscommersoni
AT hernandezda effectsofparaquatonmortalityandcardiorespiratoryfunctionofcatfishfryplecostomuscommersoni
AT vazquezgr effectsofparaquatonmortalityandcardiorespiratoryfunctionofcatfishfryplecostomuscommersoni
AT salibiana effectsofparaquatonmortalityandcardiorespiratoryfunctionofcatfishfryplecostomuscommersoni
_version_ 1807319089911169024

Ejemplares similares