Chronic toxicity bioassay with populations of the crustacean Artemia salina exposed to the organophosphate diazinon

A chronic toxicity bioassay was conducted with the microcrustacean Artemia salina as the testing organism for the toxic organophosphate diazinon in order to determine if the species is an appropriate indicator of pollution in aquatic environments. Tests of animal exposure to different concentrations...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Bustos-Obregon,Eduardo, Vargas,Álvaro
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2010
Materias:	Diazinon Artemia salina ecotoxicology bioassay
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000300013
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0716-97602010000300013
record_format	dspace
spelling	oai:scielo:S0716-976020100003000132010-11-30Chronic toxicity bioassay with populations of the crustacean Artemia salina exposed to the organophosphate diazinonBustos-Obregon,EduardoVargas,Álvaro Diazinon Artemia salina ecotoxicology bioassay A chronic toxicity bioassay was conducted with the microcrustacean Artemia salina as the testing organism for the toxic organophosphate diazinon in order to determine if the species is an appropriate indicator of pollution in aquatic environments. Tests of animal exposure to different concentrations of the toxicant were performed for 24, 48 and 72 hours after larvae hatching. Registered mortality data was used to obtain the lethal dose 50 (LD50) of the organophosphate for each exposure time, considering the immobilization of A. salina larvae as the mortality parameter. The lethal concentration (LD50) in the same exposure times was calculated by evaluating morphological changes on the three initial stages of larval development. Both doses were determined by using probit statistical analysis. Results indicate greater dose-response exactitude after 24 hours of exposure to the toxicant. High sensitivity of the organism to the toxicant was determined, thus indicating that A. salina is an appropriate ecotoxicological bioindicator of aquatic environments polluted with pesticides, with the special consideration that this species is a natural resident of saline water bodies, and thus could be used to control pollution in these environments as a result of the unrestrained usage of such toxic substances.info:eu-repo/semantics/openAccessSociedad de Biología de ChileBiological Research v.43 n.3 20102010-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000300013en10.4067/S0716-97602010000300013
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Diazinon Artemia salina ecotoxicology bioassay
spellingShingle	Diazinon Artemia salina ecotoxicology bioassay Bustos-Obregon,Eduardo Vargas,Álvaro Chronic toxicity bioassay with populations of the crustacean Artemia salina exposed to the organophosphate diazinon
description	A chronic toxicity bioassay was conducted with the microcrustacean Artemia salina as the testing organism for the toxic organophosphate diazinon in order to determine if the species is an appropriate indicator of pollution in aquatic environments. Tests of animal exposure to different concentrations of the toxicant were performed for 24, 48 and 72 hours after larvae hatching. Registered mortality data was used to obtain the lethal dose 50 (LD50) of the organophosphate for each exposure time, considering the immobilization of A. salina larvae as the mortality parameter. The lethal concentration (LD50) in the same exposure times was calculated by evaluating morphological changes on the three initial stages of larval development. Both doses were determined by using probit statistical analysis. Results indicate greater dose-response exactitude after 24 hours of exposure to the toxicant. High sensitivity of the organism to the toxicant was determined, thus indicating that A. salina is an appropriate ecotoxicological bioindicator of aquatic environments polluted with pesticides, with the special consideration that this species is a natural resident of saline water bodies, and thus could be used to control pollution in these environments as a result of the unrestrained usage of such toxic substances.
author	Bustos-Obregon,Eduardo Vargas,Álvaro
author_facet	Bustos-Obregon,Eduardo Vargas,Álvaro
author_sort	Bustos-Obregon,Eduardo
title	Chronic toxicity bioassay with populations of the crustacean Artemia salina exposed to the organophosphate diazinon
title_short	Chronic toxicity bioassay with populations of the crustacean Artemia salina exposed to the organophosphate diazinon
title_full	Chronic toxicity bioassay with populations of the crustacean Artemia salina exposed to the organophosphate diazinon
title_fullStr	Chronic toxicity bioassay with populations of the crustacean Artemia salina exposed to the organophosphate diazinon
title_full_unstemmed	Chronic toxicity bioassay with populations of the crustacean Artemia salina exposed to the organophosphate diazinon
title_sort	chronic toxicity bioassay with populations of the crustacean artemia salina exposed to the organophosphate diazinon
publisher	Sociedad de Biología de Chile
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000300013
work_keys_str_mv	AT bustosobregoneduardo chronictoxicitybioassaywithpopulationsofthecrustaceanartemiasalinaexposedtotheorganophosphatediazinon AT vargasalvaro chronictoxicitybioassaywithpopulationsofthecrustaceanartemiasalinaexposedtotheorganophosphatediazinon
_version_	1718441465492799488

Chronic toxicity bioassay with populations of the crustacean Artemia salina exposed to the organophosphate diazinon

Ejemplares similares