Is Aluminum Innocuous to Zooplankton at pH Below 6?
Por:
Garcia-Garcia, G., Jimenez-Contreras, J., Vargas-Hernandez, A. A., Nandini, S., Sarma, S. S. S.
Publicada:
1 abr 2017
Resumen:
Aluminum (Al) use has increased greatly during the last two decades, yet
little information is available on its toxic effects in relation to pH
particularly on zooplankton. In this work, we determined the acute
toxicity (LC50) and life table responses for Moina micrura exposed to
0.008, 0.016 and 0.08 mg of Al L-1 at pH of 5, 6 and 7. The age-specific
survivorship and reproduction showed a steep decline (80% mortality by
the second day) at pH 5, independent of Al level. Both gross and net
reproductive rates were significantly lower at pH 6 compared to pH 7,
regardless of Al concentration. At pH 7 the rate of population increase
of M. micrura was not significantly influenced by the Al level, while at
pH 6 it was significantly lower (p < 0.05), suggesting that M. micrura
is sensitive to changes in Al under slightly acidic conditions.
Filiaciones:
Garcia-Garcia, G.:
Laboratory of Aquatic Zoology, National Autonomous University of Mexico, Campus Iztacala, AP 314, Los Reyes, Tlalnepantla, Mexico, Mexico
Univ Nacl Autonoma Mexico, Lab Aquat Zool, Campus Iztacala,AP 314, Mexico City 54090, DF, Mexico
Jimenez-Contreras, J.:
Laboratory of Aquatic Zoology, National Autonomous University of Mexico, Campus Iztacala, AP 314, Los Reyes, Tlalnepantla, Mexico, Mexico
Univ Nacl Autonoma Mexico, Lab Aquat Zool, Campus Iztacala,AP 314, Mexico City 54090, DF, Mexico
Vargas-Hernandez, A. A.:
Laboratory of Aquatic Zoology, National Autonomous University of Mexico, Campus Iztacala, AP 314, Los Reyes, Tlalnepantla, Mexico, Mexico
Univ Nacl Autonoma Mexico, Lab Aquat Zool, Campus Iztacala,AP 314, Mexico City 54090, DF, Mexico
Nandini, S.:
Laboratory of Aquatic Zoology, National Autonomous University of Mexico, Campus Iztacala, AP 314, Los Reyes, Tlalnepantla, Mexico, Mexico
Univ Nacl Autonoma Mexico, Lab Aquat Zool, Campus Iztacala,AP 314, Mexico City 54090, DF, Mexico
Sarma, S. S. S.:
Laboratory of Aquatic Zoology, National Autonomous University of Mexico, Campus Iztacala, AP 314, Los Reyes, Tlalnepantla, Mexico, Mexico
Univ Nacl Autonoma Mexico, Lab Aquat Zool, Campus Iztacala,AP 314, Mexico City 54090, DF, Mexico
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