Evaluation of surface water quality using an ecotoxicological approach: a case study of the Alqueva Reservoir (Portugal)

Abstract

The V. fischeri and T. platyurus are two species that should be used in the acute bioassays for the ecotoxicological monitoring programs of this reservoir. It is recommended that other species, such as a productive organism (algae), be included in the next study, once the water reservoir had high levels of herbicides. Ecotoxicological assessment of surface water must integrate initial screening based on acute tests followed always by chronic bioassays. The results implicitly suggest that the implementation of processes of remediation by reducing pollutant input into the reservoir and by the implementation of water treatment processes is important and necessary.

Embryotoxic and proteotoxic effects of water and sediment from the Neckar River (Southern Germany) to zebrafish (Danio rerio) embryos

“…In 2011, a slower development and higher number of malformations were observed in spring compared to autumn. There are several studies reporting a lower contaminant level in the rainy period [32,[34][35][36]; thus, increased dilution of discharged contaminants may be a possible interpretation for lower embryotoxicity by autumn samples. Unexpectedly, in September 2012, an extraordinary high mortality was observed at all sites, especially after 84 hpf.…”

Using sets of behavioral biomarkers to assess short-term effects of pesticide: a study case with endosulfan on frog tadpoles

“…It can bioaccumulate over the food chain (Kelly et al 2007) and is toxic not only for the targeted insects and acarids, but also for non-target animals such as crustaceans (Dorts et al 2009;Tu et al 2009), fish (Stanley et al 2009;Carriger et al 2011), amphibians (Brunelli et al 2009;Jones et al 2009), and mammals, including humans (Saiyed et al 2003;Caride et al 2010). At environmental concentrations, it can cause mortalities (Brunelli et al 2009) and sublethal effects, such as inhibition of cholinergic neurotransmission ), alterations of hormonal and pheromonal profiles (Park et al 2001;Thangavel et al 2010), sex reversal (Palma et al 2010), and varied behavioral alterations such as feeding, swimming, breathing, and activity patterns (Tu et al 2010). The toxicity and environmental persistence of endosulfan conducted numerous national authorities to ban it and to propose its inclusion as persistent organic pollutant in the Stockholm convention (Kelly et al 2007; U.S.EPA 2010).…”

Biosensor-based comparison of the ecotoxicological contamination of the wastewaters of Southern Russia and Southern Germany

“…The concentration of dissolved substances and toxicity of wastewaters increase during the periods of plentiful rainfall and were demonstrated with bacterial lux-biosensors and toxic influence on amphibian larvae (Palma et al 2010;Park et al 2014).…”

“…For instance, it was shown by Palma et al (2010) that V. fisheri luminescence suppression correlates with the general content of phosphorus, chlorine compounds and heavy metals. P. phosphoreum was successfully used for determination of different molecular weight fractions of sludge treating synthetic wastewater containing 4-chlorophenol (Zhao et al 2015).…”