Effects of the endocrine disruptor 4-nonylphenol on the demography of rotifers Plationus patulus and Brachionus havanaensis: a multigenerational study
Por:
Gonzalez-Perez, Brenda Karen, Sarma, S. S. S., Castellanos-Paez, Maria Elena, Nandini, S.
Publicada:
27 dic 2021
Ahead of Print:
1 oct 2021
Resumen:
The emerging contaminant 4-nonylphenol is an active ingredient in many
surfactants. Though 4-nonylphenol has been reported in Mexican
waterbodies, no stringent law is available to establish its permissible
limits. Most ecotoxicological assays using zooplankton species are based
on previously unexposed populations, and multigenerational experiments
are rare. Plationus patulus and Brachionus havanaensis are widely
distributed species in Mexico and have been used in ecotoxicological
assessments. In this work, the median lethal concentration of
4-nonylphenol (LC50, 24 h) for both rotifer species was derived. Based
on our acute toxicity data (24 h LC50 of 4-nonylphenol for P. patulus
and B. havanaensis were 500 and 250 mu g L-1, respectively), three
sublethal concentrations (mu g L-1) (7.81, 15.82 and 31.25 for B.
havanaensis and 15.62, 31.25 and 62.5 for P. patulus) were used in the
life table demography tests for two successive generations (F0 and F1)
of either rotifer species. Regardless of the concentrations used,
4-nonylphenol had an adverse effect on both rotifer species over two
successive generations. P. patulus was more sensitive than B.
havanaensis in chronic toxicity tests. F1 generation of both rotifer
species was far more adversely affected than the F0 in all toxicant
treatments.
Filiaciones:
Gonzalez-Perez, Brenda Karen:
Univ Autonoma Metropolitana, Unidad Xochimilco, Programa Doctorado Ciencias Biol & Salud, Mexico City, DF, Mexico
Sarma, S. S. S.:
Univ Nacl Autonoma Mexico, Campus Iztacala,Av Barrios 1, Tlalnepantla 54090, State Of Mexico, Mexico
Castellanos-Paez, Maria Elena:
Univ Autonoma Metropolitana, Unidad Xochimilco, Programa Doctorado Ciencias Biol & Salud, Mexico City, DF, Mexico
Nandini, S.:
Univ Nacl Autonoma Mexico, Campus Iztacala,Av Barrios 1, Tlalnepantla 54090, State Of Mexico, Mexico
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