Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Sublethal effects of copper on some biological traits of the amphipod Gammarus aequicauda reared under laboratory conditions |
| Abstract | The common and widespread copper contamination in marine coastal environments make toxicity data necessary to assess the aquatic hazard and risk of this metal. In the present study, the sublethal effects of copper on survival, growth and reproduction of Gammarus aequicauda were investigated. Amphipods were exposed for 77 d to 2 nominal copper concentrations (50, 100 lg L?1). Survival was the most sensitive measure of effect and was significantly reduced, especially during early life stage (juveniles). Growth of amphipods was also negatively affected by copper and the growth impairment in G. aequicauda increases with increasing metal concentration. The reproductive traits were impaired by each of the copper concentrations, even if there were not any significant differences between control and copper treatments. The size at maturity increased with increasing copper, so the smallest ovigerous females in the control and copper treatments were 0.83 mm and 1.35 mm head length, respec- tively. There was a positive correlation between the brood size and the body size of the female in all treat- ments, whilst the fecundity (n°juveniles/female) decreased in the order control, 50 and 100 lgCu L?1. Copper demonstrates chronic toxicity to G. aequicauda at realistic environmental concentrations. The results of this study entail that the understanding of chronic toxicity of a substance, especially on popu- lation level effects, is crucial to assess the long-term effect of the substance in the ecosystem. |
| Source | Chemosphere 93 (6), pp. 1015–1022 |
| Keywords | Chronic testCopperGammarus aequicaudaGrowthReproduction |
| Journal | Chemosphere |
| Editor | Elsevier, Oxford, Regno Unito |
| Year | 2013 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.chemosphere.2013.05.071 |
| Authors | Prato E.; Parlapiano I.; Biandolino F. |
| Text | 327813 2013 10.1016/j.chemosphere.2013.05.071 Scopus 2 s2.0 84885850903 Chronic test Copper Gammarus aequicauda Growth Reproduction Sublethal effects of copper on some biological traits of the amphipod Gammarus aequicauda reared under laboratory conditions Prato E.; Parlapiano I.; Biandolino F. Institute for Coastal Marine Environment, CNR Via Roma, 3 74100 Taranto, Italy The common and widespread copper contamination in marine coastal environments make toxicity data necessary to assess the aquatic hazard and risk of this metal. In the present study, the sublethal effects of copper on survival, growth and reproduction of Gammarus aequicauda were investigated. Amphipods were exposed for 77 d to 2 nominal copper concentrations 50, 100 lg L 1 . Survival was the most sensitive measure of effect and was significantly reduced, especially during early life stage juveniles . Growth of amphipods was also negatively affected by copper and the growth impairment in G. aequicauda increases with increasing metal concentration. The reproductive traits were impaired by each of the copper concentrations, even if there were not any significant differences between control and copper treatments. The size at maturity increased with increasing copper, so the smallest ovigerous females in the control and copper treatments were 0.83 mm and 1.35 mm head length, respec tively. There was a positive correlation between the brood size and the body size of the female in all treat ments, whilst the fecundity n°juveniles/female decreased in the order control, 50 and 100 lgCu L 1. Copper demonstrates chronic toxicity to G. aequicauda at realistic environmental concentrations. The results of this study entail that the understanding of chronic toxicity of a substance, especially on popu lation level effects, is crucial to assess the long term effect of the substance in the ecosystem. 93 http //www.scopus.com/inward/record.url eid=2 s2.0 84885850903 partnerID=q2rCbXpz Articolo in rivista Elsevier 0045 6535 Chemosphere Chemosphere Chemosphere Chemosphere. Chemosphere. Environmental chemistry, Chemosphere. Persistent organic pollutants and dioxins, Chemosphere. Environmental toxicology and risk assessment, Chemosphere. Science for Environmental toxicology, isabella.parlapiano PARLAPIANO ISABELLA francesca.biandolino BIANDOLINO FRANCESCA ermelinda.prato PRATO ERMELINDA |