title: Is Aluminum Innocuous to Zooplankton at pH Below 6?
abstract: 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-1at 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.
authors.affiliation: Laboratory of Aquatic Zoology, National Autonomous University of Mexico, Campus Iztacala, AP 314, CP 54090, Los Reyes, Tlalnepantla, Mexico, Mexico. garcia_garciag@comunidad.unam.mx.
authors.forename: G
authors.identifier: http://orcid.org/0000-0002-6635-8932
authors.initials: G
authors.lastname: García-García
authors.affiliation: Laboratory of Aquatic Zoology, National Autonomous University of Mexico, Campus Iztacala, AP 314, CP 54090, Los Reyes, Tlalnepantla, Mexico, Mexico.
authors.forename: J
authors.initials: J
authors.lastname: Jiménez-Contreras
authors.affiliation: Laboratory of Aquatic Zoology, National Autonomous University of Mexico, Campus Iztacala, AP 314, CP 54090, Los Reyes, Tlalnepantla, Mexico, Mexico.
authors.forename: A A
authors.initials: AA
authors.lastname: Vargas-Hernández
authors.affiliation: Laboratory of Aquatic Zoology, National Autonomous University of Mexico, Campus Iztacala, AP 314, CP 54090, Los Reyes, Tlalnepantla, Mexico, Mexico.
authors.forename: S
authors.initials: S
authors.lastname: Nandini
authors.affiliation: Laboratory of Aquatic Zoology, National Autonomous University of Mexico, Campus Iztacala, AP 314, CP 54090, Los Reyes, Tlalnepantla, Mexico, Mexico.
authors.forename: S S S
authors.initials: SS
authors.lastname: Sarma
mesh_terms: D000535:Aluminum / Q000633:toxicity*; D000818:Animals; D033361:Cladocera / Q000187:drug effects; D006863:Hydrogen-Ion Concentration; D012098:Reproduction / Q000187:drug effects*; D015048:Zooplankton / Q000187:drug effects*
chemical_list: D000535:Aluminum
keywords: Chronic exposure; Cladocera; Life table demography; Moina micrura