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Effects of chlorpyrifos on the growth and ultrastructure of green algae, ankistrodesmus gracilis
dc.contributor.author | Asselborn, Viviana Magdalena | |
dc.contributor.author | Fernández, Carolina | |
dc.contributor.author | Zalocar de Domitrovic, Yolanda | |
dc.contributor.author | Parodi, Elisa Rosalía | |
dc.date.accessioned | 2021-08-26T14:06:44Z | |
dc.date.available | 2021-08-26T14:06:44Z | |
dc.date.issued | 2015-06-09 | |
dc.identifier.citation | Asselborn, Viviana Magdalena, et al., 2015. Effects of chlorpyrifos on the growth and ultrastructure of green algae, ankistrodesmus gracilis. Ecotoxicology and Environmental Safety. Manchester: Elsevier, vol. 120, p. 334-341. ISSN 1090-2414. | es |
dc.identifier.issn | 0147-6513 | es |
dc.identifier.uri | http://repositorio.unne.edu.ar/handle/123456789/28489 | |
dc.description.abstract | The effect of the organophosphorus insecticide chlorpyrifos on the growth, biovolume, and ultrastructure of the green microalga Ankistrodesmus gracilis was evaluated. Concentrations of 9.37, 18.75, 37.5, 75 and 150 mg L 1 of chlorpyrifos were assayed along with a control culture. At the end of the bioassay the ultrastructure of algal cells from control culture and from cultures exposed to 37.5 and 150 mg L 1 was observed under transmission (TEM) and scanning electron microscopy (SEM). After 24 and 48 h, treatments with 75 and 150 mg L 1 inhibited the growth of A. gracilis; whereas after 72 and 96 h, all the treatments except at 9.37 mg L 1 significantly affected the algae growth. The effective concentration 50 (EC50) after 96 h was 22.44 mg L 1 of chlorpyrifos. After the exposure to the insecticide, an increase in the biovolume was observed, with a larger increase in cells exposed to 75 and 150 mg L 1 . Radical changes were observed in the ultrastructure of cells exposed to chlorpyrifos. The insecticide affected the cell shape and the distribution of the crests in the wall. At 37.5 mg L 1 electodense bodies were observed along with an increase in the size and number of starch granules. At 150 mg L 1 such bodies occupied almost the whole cytoplasm together with lipids and remains of thylakoids. Autospores formation occurred normally at 37.5 mg L 1 while at 150 mg L 1 karyokinesis occurred, but cell-separation-phase was inhibited. The present study demonstrates that the exposure of phytoplankton to the insecticide chlorpyrifos leads to effects observed at both cellular and population level | es |
dc.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | Elsevier | es |
dc.rights | openAccess | es |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ | es |
dc.source | Ecotoxicology and Environmental Safety, 2015, vol. 120, p. 334-341. | es |
dc.subject | Pesticide | es |
dc.subject | Microalgae | es |
dc.subject | Toxicity | es |
dc.subject | Ultrastructure | es |
dc.title | Effects of chlorpyrifos on the growth and ultrastructure of green algae, ankistrodesmus gracilis | es |
dc.type | Artículo | es |
unne.affiliation | Fil: Asselborn, Viviana Magdalena. Universidad Nacional del Sur. Departamento Biología, Bioquímica y Farmacia. Laboratorio Ecología Acuática; Argentina. | es |
unne.affiliation | Fil: Fernández, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Argentino de Oceanografía; Argentina. | es |
unne.affiliation | Fil: Zalocar de Domitrovic, Yolanda. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura; Argentina. | es |
unne.affiliation | Fil: Zalocar de Domitrovic, Yolanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Ecología Aplicada del Litoral; Argentina. | es |
unne.affiliation | Fil: Parodi, Elisa Rosalía. Universidad Nacional del Sur. Departamento Biología, Bioquímica y Farmacia. Laboratorio Ecología Acuática; Argentina. | es |
unne.affiliation | Fil: Parodi, Elisa Rosalía. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Argentino de Oceanografía; Argentina. | es |
unne.journal.pais | Inglaterra | es |
unne.journal.ciudad | Manchester | es |
unne.ISSN-e | 1090-2414 | es |
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