Effect of Methamidophos on the Morphology and Male Reproductive Parameters of the Earthworm Eisenia foetida

The earthworm Eisenia foetida (Annelida, Oligochaeta) is an excellent biosentinel model organism for assessing potential toxicological risks by xenobiotics in terrestrial ecosystems. Methamidophos is an organophosphorous insecticide widely used to control agricultural pests. Its main action is due t...

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Autores principales:	Espinoza-Navarro,Omar, Ferreira,Carolina, Bustos-Obregón,Eduardo
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2013
Materias:	Reproduction Eisenia foetida Methamidophos Cytotoxicity
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000300051
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spelling	oai:scielo:S0717-950220130003000512013-12-03Effect of Methamidophos on the Morphology and Male Reproductive Parameters of the Earthworm Eisenia foetidaEspinoza-Navarro,OmarFerreira,CarolinaBustos-Obregón,Eduardo Reproduction Eisenia foetida Methamidophos Cytotoxicity The earthworm Eisenia foetida (Annelida, Oligochaeta) is an excellent biosentinel model organism for assessing potential toxicological risks by xenobiotics in terrestrial ecosystems. Methamidophos is an organophosphorous insecticide widely used to control agricultural pests. Its main action is due to inhibition of the enzyme acetylcholinesterase. The aim of this study was to evaluate the toxicity of methamidophos on the morphology and male parameters in Eisenia foetida. After determining the LD50 for methamidophos (85.34 mg/kg soil), five groups were formed, including control subjects, and sprayed with tap water. Methamidophos treated groups were subjected to doses of 1/10, 1/6, 1/3 and 2/3 of the LD50. Each group was analyzed at day 1, 6, 14 and 30 post-treatment. The results show a significant decrease in the weight of all individuals treated with methamidophos, besides showing a coiled body in 100% of them. Sperm count showed a significant increase in the treated groups after 1, 6 and 14 days post exposure and a significant decrease by day 30. Using the technique of acridine orange, a significant increase in abnormal metachromatic sperm (red fluorescence) in treated animals was shown. Methamidophos alters the overall behavior in earthworms and the male reproductive parameters of Eisenia foetida possibly altering the structure and conformation of DNA.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.31 n.3 20132013-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000300051en10.4067/S0717-95022013000300051
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Reproduction Eisenia foetida Methamidophos Cytotoxicity
spellingShingle	Reproduction Eisenia foetida Methamidophos Cytotoxicity Espinoza-Navarro,Omar Ferreira,Carolina Bustos-Obregón,Eduardo Effect of Methamidophos on the Morphology and Male Reproductive Parameters of the Earthworm Eisenia foetida
description	The earthworm Eisenia foetida (Annelida, Oligochaeta) is an excellent biosentinel model organism for assessing potential toxicological risks by xenobiotics in terrestrial ecosystems. Methamidophos is an organophosphorous insecticide widely used to control agricultural pests. Its main action is due to inhibition of the enzyme acetylcholinesterase. The aim of this study was to evaluate the toxicity of methamidophos on the morphology and male parameters in Eisenia foetida. After determining the LD50 for methamidophos (85.34 mg/kg soil), five groups were formed, including control subjects, and sprayed with tap water. Methamidophos treated groups were subjected to doses of 1/10, 1/6, 1/3 and 2/3 of the LD50. Each group was analyzed at day 1, 6, 14 and 30 post-treatment. The results show a significant decrease in the weight of all individuals treated with methamidophos, besides showing a coiled body in 100% of them. Sperm count showed a significant increase in the treated groups after 1, 6 and 14 days post exposure and a significant decrease by day 30. Using the technique of acridine orange, a significant increase in abnormal metachromatic sperm (red fluorescence) in treated animals was shown. Methamidophos alters the overall behavior in earthworms and the male reproductive parameters of Eisenia foetida possibly altering the structure and conformation of DNA.
author	Espinoza-Navarro,Omar Ferreira,Carolina Bustos-Obregón,Eduardo
author_facet	Espinoza-Navarro,Omar Ferreira,Carolina Bustos-Obregón,Eduardo
author_sort	Espinoza-Navarro,Omar
title	Effect of Methamidophos on the Morphology and Male Reproductive Parameters of the Earthworm Eisenia foetida
title_short	Effect of Methamidophos on the Morphology and Male Reproductive Parameters of the Earthworm Eisenia foetida
title_full	Effect of Methamidophos on the Morphology and Male Reproductive Parameters of the Earthworm Eisenia foetida
title_fullStr	Effect of Methamidophos on the Morphology and Male Reproductive Parameters of the Earthworm Eisenia foetida
title_full_unstemmed	Effect of Methamidophos on the Morphology and Male Reproductive Parameters of the Earthworm Eisenia foetida
title_sort	effect of methamidophos on the morphology and male reproductive parameters of the earthworm eisenia foetida
publisher	Sociedad Chilena de Anatomía
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000300051
work_keys_str_mv	AT espinozanavarroomar effectofmethamidophosonthemorphologyandmalereproductiveparametersoftheearthwormeiseniafoetida AT ferreiracarolina effectofmethamidophosonthemorphologyandmalereproductiveparametersoftheearthwormeiseniafoetida AT bustosobregoneduardo effectofmethamidophosonthemorphologyandmalereproductiveparametersoftheearthwormeiseniafoetida
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Effect of Methamidophos on the Morphology and Male Reproductive Parameters of the Earthworm Eisenia foetida

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