Effects of ethil-parathion and DDVP on centolla larvae Lithodes antarcticus Jacquinot

The tox icity o f two pesticides, ethil - parathion (DNTP) and DDVP, organophosphorous insecticides extensively used in commercial formulations, was evaluated. Standard short-term exposure (108 h) static toxicity bioassays were performed with Southern king crab larvae (1 st. zoeae) obtained from ovi...

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Autores principales: Lombardo, Rubén J., Ferrari, Lucrecia, Vinuesa, Julio H.
Formato: Artículo revista
Lenguaje:Español
Publicado: Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste) 2023
Acceso en línea:https://revistas.unne.edu.ar/index.php/eco/article/view/6987
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Revistas UNNE - Universidad Nacional del Noroeste (UNNE) de Universidad Nacional del Nordeste
id I48-R154-article-6987
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spelling I48-R154-article-69872025-07-04T12:47:53Z Effects of ethil-parathion and DDVP on centolla larvae Lithodes antarcticus Jacquinot Efectos del etilparathion y DDYP sobre larvas de centolla Lithodes antarticus Jacquinot Lombardo, Rubén J. Ferrari, Lucrecia Vinuesa, Julio H. The tox icity o f two pesticides, ethil - parathion (DNTP) and DDVP, organophosphorous insecticides extensively used in commercial formulations, was evaluated. Standard short-term exposure (108 h) static toxicity bioassays were performed with Southern king crab larvae (1 st. zoeae) obtained from ovigerous females of Beagle Channel (Ushuaia). Each 12 h lethal concentrations for the 50% of the individuáis (LC 50) were estimated by Finney’s formal probit analysis. Three speed computing methods were used furthermore, obtaining not unbiased estimates in case of asymmetrical tolerance distribution. The data show that the two pesticides are acutely toxic at low concentrations. The 96 h of exposure LC50 are 33 /ag/1 for DNTP and 3.6 mg/¡ for DDVP. The DNTP toxicity curve indicates that lethal treshold concentration is smaller than 33 p.g/1. Apparently treshold for acute lethality were not found for DDVP.Both drugs induced suble'thal effects. There are: swimming and appendix inactivity, expansión of the posterior carapace area and rigid abdomen or eontinuously twisted. The tox icity o f two pesticides, ethil-parathion (DNTP) and DDVP, organophosphorous insecticides extensively used in commercial formulations, was evaluated. Standard short-term exposure (108 h) static toxicity bioassays were performed with Southern king crab larvae (1 st. zoeae) obtained from ovigerous females of Beagle Channel (Ushuaia). Each 12 h lethal concentrations for the 50% of the individuáis (LC 50) were estimated by Finney’s formal probit analysis. Three speed computing methods were used furthermore, obtaining not unbiased estimates in case of asymmetrical tolerance distribution. The data show that the two pesticides are acutely toxic at low concentrations. The 96 h of exposure LC50 are 33 /ag/1 for DNTP and 3.6 mg/¡ for DDVP. The DNTP toxicity curve indicates that lethal treshold concentration is smaller than 33 p.g/1. Apparently treshold for acute lethality were not found for DDVP. Both drugs induced suble'thal effects. There are: swimming and appendix inactivity, expansión of the posterior carapace area and rigid abdomen or eontinuously twisted. Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste) 2023-11-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo revisado por pares application/pdf https://revistas.unne.edu.ar/index.php/eco/article/view/6987 10.30972/eco.9186987 Ecosur; 1982: vol. 9, no. 18; 141-151 0325-108X spa https://revistas.unne.edu.ar/index.php/eco/article/view/6987/6875
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-154
container_title_str Revistas UNNE - Universidad Nacional del Noroeste (UNNE)
language Español
format Artículo revista
author Lombardo, Rubén J.
Ferrari, Lucrecia
Vinuesa, Julio H.
spellingShingle Lombardo, Rubén J.
Ferrari, Lucrecia
Vinuesa, Julio H.
Effects of ethil-parathion and DDVP on centolla larvae Lithodes antarcticus Jacquinot
author_facet Lombardo, Rubén J.
Ferrari, Lucrecia
Vinuesa, Julio H.
author_sort Lombardo, Rubén J.
title Effects of ethil-parathion and DDVP on centolla larvae Lithodes antarcticus Jacquinot
title_short Effects of ethil-parathion and DDVP on centolla larvae Lithodes antarcticus Jacquinot
title_full Effects of ethil-parathion and DDVP on centolla larvae Lithodes antarcticus Jacquinot
title_fullStr Effects of ethil-parathion and DDVP on centolla larvae Lithodes antarcticus Jacquinot
title_full_unstemmed Effects of ethil-parathion and DDVP on centolla larvae Lithodes antarcticus Jacquinot
title_sort effects of ethil-parathion and ddvp on centolla larvae lithodes antarcticus jacquinot
description The tox icity o f two pesticides, ethil - parathion (DNTP) and DDVP, organophosphorous insecticides extensively used in commercial formulations, was evaluated. Standard short-term exposure (108 h) static toxicity bioassays were performed with Southern king crab larvae (1 st. zoeae) obtained from ovigerous females of Beagle Channel (Ushuaia). Each 12 h lethal concentrations for the 50% of the individuáis (LC 50) were estimated by Finney’s formal probit analysis. Three speed computing methods were used furthermore, obtaining not unbiased estimates in case of asymmetrical tolerance distribution. The data show that the two pesticides are acutely toxic at low concentrations. The 96 h of exposure LC50 are 33 /ag/1 for DNTP and 3.6 mg/¡ for DDVP. The DNTP toxicity curve indicates that lethal treshold concentration is smaller than 33 p.g/1. Apparently treshold for acute lethality were not found for DDVP.Both drugs induced suble'thal effects. There are: swimming and appendix inactivity, expansión of the posterior carapace area and rigid abdomen or eontinuously twisted.
publisher Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste)
publishDate 2023
url https://revistas.unne.edu.ar/index.php/eco/article/view/6987
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first_indexed 2024-08-21T22:38:47Z
last_indexed 2025-08-17T05:02:15Z
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