dc.creator | Gaete,Hernán | |
dc.creator | Olivares,Yenny | |
dc.creator | Escobar,Cristián | |
dc.date | 2013-11-01 | |
dc.date.accessioned | 2019-05-03T13:27:30Z | |
dc.date.available | 2019-05-03T13:27:30Z | |
dc.identifier | https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-560X2013000500016 | |
dc.identifier.uri | http://revistaschilenas.uchile.cl/handle/2250/87941 | |
dc.description | The aim of this study was to evaluate the effect of a commercial formulation of Methomyl on the reproduction in Daphnia obtusa. Neonates (<24 h) were exposed to concentrations of insecticide (1.0, 1.5, 2.0, 2.5, 3.0 µg L-1) for a period of 21 days. The results showed a significant decrease in the number of molts, total neonates, fertility and sex ratio index. Significant regressions were found between reproductive parameters and concentrations of the insecticide: molts (R² = 0.96), fertility (R² = 0.97), number of female neonates born per female (R² = 0.90), and the number of male neonates born per female (R² = 0.94). Embryotoxicity was also observed; the number of neonates born with malformations increased in the highest concentrations of Methomyl 90 SP® tested. In conclusion, Methomyl 90 SP® inhibits reproduction of D. obtusa. However, a clear effect as an endocrine disrupter was not observed. This insecticide is embryotoxic; it causes malformations in neonates of Daphnia obtusa. | |
dc.format | text/html | |
dc.language | en | |
dc.publisher | Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar | |
dc.relation | 103856/vol41-issue5-fulltext-16 | |
dc.rights | info:eu-repo/semantics/openAccess | |
dc.source | Latin american journal of aquatic research v.41 n.5 2013 | |
dc.subject | Daphnia | |
dc.subject | endocrine | |
dc.subject | neonates | |
dc.subject | pesticide | |
dc.subject | disruptor | |
dc.subject | zooplankton | |
dc.subject | ecotoxicology | |
dc.title | Assessment of the effect of a commercial formulation of Methomyl on reproduction of Daphnia obtusa Kürz (1874) | |