ARPHA Conference Abstracts : Conference Abstract
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Corresponding author: Andrea Castaño Sánchez (andrea.sanchez@snm.ku.dk)
Received: 17 Sep 2018 | Published: 26 Sep 2018
© 2018 Andrea Castaño Sánchez, Joana Pereira, Fernando Gonçalves, Ana Sofia Reboleira
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation: Castaño Sánchez A, Pereira J, Gonçalves F, Reboleira A (2018) Comparative acute toxicity of the pharmaceutical compound Diclofenac on groundwater and surface water crustaceans. ARPHA Conference Abstracts 1: e29822. https://doi.org/10.3897/aca.1.e29822
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Pharmaceutical compounds have been extensively used in medicine and currently detected in trace concentrations (ranging from ng/L to mg/L) in both surface and groundwater bodies worldwide in the last decades. Despite being mostly found in low concentrations, these are persistent compounds that are continuously discharged into aquatic ecosystems. Pharmaceutical compounds are also present in complex mixtures and the actual absence of appropriate wastewater treatment specifically targeting their elimination, renders them emerging contaminants with high risk for surface and groundwater ecosystems. None of these compounds is included in the European Water Framework Directive as a priority substance and comprehensive data are still being built regarding pharmaceuticals toxicity on standard surface aquatic taxa and almost none concerning groundwater-dweller species. However, the current Directive 2008/105/EC has included some antibiotics, steroids, phenolic-antioxidants and the anti-inflammatory diclofenac in the established watch list for monitoring substances regarding water quality policy.
Assessing the toxicity of pharmaceutical compounds in a large spectrum of aquatic environments is needed to assist a realistic environmental risk assessment. Hence, including subterranean species is a priority for establishing conservation measures in groundwater ecosystems. Copepod crustaceans are widely represented in freshwater bodies and dominant in groundwater ecosystems. We have selected the cosmopolitan (freshwater and groundwater) crustacean species Diacyclops crassicaudis crassicaudis Sars, 1863 and the freshwater model species Daphnia magna Müller, 1785 to estimate their response to acute exposures to the pharmaceutical compound diclofenac. Our preliminary results indicate that diclofenac was more toxic to the copepodites C1-C2 than to the neonates of D. magna (half maximal effective concentration: 63 mg/L and 111.3 mg/L at 48 h respectively) (See Suppl. material
Castaño-Sánchez, Andrea
24th International Conference on Subterranean Biology. Univesity of Aveiro (Portugal), 20-24th August 2018.
This work was supported by a research grant (15471) from the VILLUM FONDEN. To CESAM (UID/AMB/50017-POCI-01-0145-FEDER-007638) FCT/MEC, co-funded by the FEDER, within the PT2020 Partnership Agreement and Compete 2020, and to a postdoc grant by FCT (SFRH/BPD/101971/2014).
Poster presented at the 24th International Conference on Subterranean Biology. University of Aveiro (Portugal), 20-24th August 2018.