Assessing the Cadmium Effects on the Benthic Foraminifer Ammonia cf. parkinsoniana: An Acute Toxicity Test
| Autor: | Carla Bucci, María Teresa Losada Ros, Eqbal Al-Enezi, Erica Cesarini, Fabrizio Frontalini, Maria Virgínia Alves Martins, Stefano Papa, Barbara Canonico |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:Hydraulic engineering
010504 meteorology & atmospheric sciences cadmium confocal images Biomagnification Geography Planning and Development chemistry.chemical_element benthic foraminifera 010501 environmental sciences Aquatic Science 01 natural sciences Biochemistry ecotoxicology chemistry.chemical_compound lcsh:Water supply for domestic and industrial purposes lcsh:TC1-978 Ecotoxicology Bioassay 0105 earth and related environmental sciences Water Science and Technology Cadmium lcsh:TD201-500 Nile red Acute toxicity chemistry Environmental chemistry Bioaccumulation Seawater |
| Zdroj: | Water, Vol 12, Iss 1018, p 1018 (2020) Water Volume 12 Issue 4 |
| ISSN: | 2073-4441 |
| Popis: | Heavy metals are one of the most hazardous pollutants in marine environments because of their bioaccumulation and biomagnification capabilities. Among them, cadmium (Cd) has been considered as one of the most dangerous for marine organisms. Here we incubated Ammonia cf. parkinsoniana specimens, a benthic foraminiferal taxon used in previous experiments, for up to 48 h in natural seawater with different concentrations of Cd to unravel the physiological change. We document a reduced pseudopodial activity of the Cd-treated specimens at concentrations > 10&ndash 100 ppb in comparison with the control specimens. Moreover, confocal images of Cd-treated specimens using Nile Red as a fluorescent probe reveal an enhanced intracellular neutral lipid accumulation in the form of lipid droplets at 6 h and 12 h. This bioassay experiment allows for the direct evaluation of Cd-dose to A. cf. parkinsoniana-response relationships under laboratory controlled conditions and provides complementary information to field observations as well as to water quality guidelines and thresholds. |
| Databáze: | OpenAIRE |
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