Sublethal toxicity of chlorpyrifos on Octolasion cyaneum (Annelida: Oligochaeta, Lumbricidae)
The aim of this study was to evaluate the survival, biomass, reproductiveparameters and morphological changes of Octolasion cyaneum (Annelida:Oligochaeta, Lumbricidae) exposed to different concentrations of chlorpyrifos. The experimental unit consisted of a container with 750 g of soil mixed with th...
| Main Authors: | , , , , |
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| Format: | Online |
| Language: | spa |
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Facultad de Ciencias Agropecuarias
2015
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| Subjects: | |
| Online Access: | https://revistas.unc.edu.ar/index.php/agris/article/view/16564 |
| _version_ | 1802315587885465600 |
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| author | Salvio, c. Manetti, P.L. Clemente, N.L. Menone, M.L. López, A.N. |
| author_facet | Salvio, c. Manetti, P.L. Clemente, N.L. Menone, M.L. López, A.N. |
| author_sort | Salvio, c. |
| collection | Portal de Revistas |
| description | The aim of this study was to evaluate the survival, biomass, reproductiveparameters and morphological changes of Octolasion cyaneum (Annelida:Oligochaeta, Lumbricidae) exposed to different concentrations of chlorpyrifos. The experimental unit consisted of a container with 750 g of soil mixed with the concentration of the insecticide and 10 adult individuals (weight range: 300-600 mg). The treatments were: 0, 120, 240, 480 (recommended application concentration), 960 and 1440 g of chlorpyrifos ha-1. The design was completely randomized with four replications and was conducted under controlled conditions (20±2ºC, 14L: 10O). O. cyaneum biomass differed between treatments at 7, 14 and 28 days after application (DAA) (p<0.05), and showed the highest biomass in the control. The number of cocoons and juveniles at 56 DAA was higher in the control compared to the other treatments (p<0.05). In the bioassay 235 individuals were alive and 5 were dead, nevertheless the 35% of organisms showed morphological changes. It was noted that the percentage of damage varied depending on the concentration of the insecticide (p = 0.0046). Chlorpyrifos did not affect the survival of O. cyaneum but caused morphological changes and a reduction in biomass and reproductive parameters. |
| format | Online |
| id | oai:ojs.revistas.unc.edu.ar:article-16564 |
| institution | Universidad Nacional de Cordoba |
| language | spa |
| publishDate | 2015 |
| publisher | Facultad de Ciencias Agropecuarias |
| record_format | ojs |
| spelling | oai:ojs.revistas.unc.edu.ar:article-165642020-02-13T17:57:11Z Sublethal toxicity of chlorpyrifos on Octolasion cyaneum (Annelida: Oligochaeta, Lumbricidae) Toxicidad subletal de clorpirifos sobre Octolasion cyaneum (Annelida: Oligochaeta, Lumbricidae) Salvio, c. Manetti, P.L. Clemente, N.L. Menone, M.L. López, A.N. Earthworm ecotoxicological bioassay neurotoxic insecticide. lombriz bioensayo ecotoxicológico insecticida neurotóxico. The aim of this study was to evaluate the survival, biomass, reproductiveparameters and morphological changes of Octolasion cyaneum (Annelida:Oligochaeta, Lumbricidae) exposed to different concentrations of chlorpyrifos. The experimental unit consisted of a container with 750 g of soil mixed with the concentration of the insecticide and 10 adult individuals (weight range: 300-600 mg). The treatments were: 0, 120, 240, 480 (recommended application concentration), 960 and 1440 g of chlorpyrifos ha-1. The design was completely randomized with four replications and was conducted under controlled conditions (20±2ºC, 14L: 10O). O. cyaneum biomass differed between treatments at 7, 14 and 28 days after application (DAA) (p<0.05), and showed the highest biomass in the control. The number of cocoons and juveniles at 56 DAA was higher in the control compared to the other treatments (p<0.05). In the bioassay 235 individuals were alive and 5 were dead, nevertheless the 35% of organisms showed morphological changes. It was noted that the percentage of damage varied depending on the concentration of the insecticide (p = 0.0046). Chlorpyrifos did not affect the survival of O. cyaneum but caused morphological changes and a reduction in biomass and reproductive parameters. El objetivo de este trabajo fue evaluar la supervivencia, biomasa, parámetros reproductivos y cambios morfológicos de Octolasion cyaneum (Annelida: Oligochaeta, Lumbricidae) expuesta a diferentes concentraciones de clorpirifos. La unidad experimental consistió en un recipiente con 750 g de suelo mezclado con la concentración del insecticida y 10 individuos adultos (rango de peso: 300-600 mg). Los tratamientos fueron: 0, 120, 240, 480 (concentración de aplicación recomendada), 960 y 1440 g de clorpirifos ha-1. El diseño fue completamente aleatorizado con cuatro repeticiones y se llevó a cabo en condiciones controladas (20±2ºC; 14L: 10O). La biomasa de O. cyaneum difirió entre los tratamientos a los 7, 14 y 28 días después dela aplicación (DDA) (p<0,05), observándose la biomasa mayor en el testigo. El número de cocones y juveniles a los 56 DDA fue mayor en el testigo con respecto a los demás tratamientos (p<0,05). Se obtuvieron 235 individuos vivos y 5 muertos, no obstante, el 35% de los organismos presentaron cambios morfológicos. Se observó que el porcentaje de daño varió en función de la concentración del insecticida (p = 0,0046). Clorpirifos no afectó la supervivencia de O. cyaneum pero causó cambios morfológicos y reducción en su biomasa y en sus parámetros reproductivos. Facultad de Ciencias Agropecuarias 2015-12-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unc.edu.ar/index.php/agris/article/view/16564 AgriScientia; Vol. 32 No. 2 (2015); 131-138 AgriScientia; Vol. 32 Núm. 2 (2015); 131-138 1668-298X 10.31047/1668.298x.v32.n2 spa https://revistas.unc.edu.ar/index.php/agris/article/view/16564/16374 |
| spellingShingle | Earthworm ecotoxicological bioassay neurotoxic insecticide. lombriz bioensayo ecotoxicológico insecticida neurotóxico. Salvio, c. Manetti, P.L. Clemente, N.L. Menone, M.L. López, A.N. Sublethal toxicity of chlorpyrifos on Octolasion cyaneum (Annelida: Oligochaeta, Lumbricidae) |
| title | Sublethal toxicity of chlorpyrifos on Octolasion cyaneum (Annelida: Oligochaeta, Lumbricidae) |
| title_alt | Toxicidad subletal de clorpirifos sobre Octolasion cyaneum (Annelida: Oligochaeta, Lumbricidae) |
| title_full | Sublethal toxicity of chlorpyrifos on Octolasion cyaneum (Annelida: Oligochaeta, Lumbricidae) |
| title_fullStr | Sublethal toxicity of chlorpyrifos on Octolasion cyaneum (Annelida: Oligochaeta, Lumbricidae) |
| title_full_unstemmed | Sublethal toxicity of chlorpyrifos on Octolasion cyaneum (Annelida: Oligochaeta, Lumbricidae) |
| title_short | Sublethal toxicity of chlorpyrifos on Octolasion cyaneum (Annelida: Oligochaeta, Lumbricidae) |
| title_sort | sublethal toxicity of chlorpyrifos on octolasion cyaneum annelida oligochaeta lumbricidae |
| topic | Earthworm ecotoxicological bioassay neurotoxic insecticide. lombriz bioensayo ecotoxicológico insecticida neurotóxico. |
| topic_facet | Earthworm ecotoxicological bioassay neurotoxic insecticide. lombriz bioensayo ecotoxicológico insecticida neurotóxico. |
| url | https://revistas.unc.edu.ar/index.php/agris/article/view/16564 |
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