| Autor: |
Salomão AL; Department of Sanitary and Environmental Engineering, Rio de Janeiro State University-UERJ, Rua São Francisco Xavier, 524, sl 5024E, Maracanã, Rio de Janeiro, RJ, CEP 20550-900, Brazil, andre@andresalomao.com., Soroldoni S, Marques M, Hogland W, Bila DM |
| Jazyk: |
angličtina |
| Zdroj: |
Bulletin of environmental contamination and toxicology [Bull Environ Contam Toxicol] 2014 Aug; Vol. 93 (2), pp. 215-21. Date of Electronic Publication: 2014 May 22. |
| DOI: |
10.1007/s00128-014-1294-6 |
| Abstrakt: |
This paper investigates the effect of estrone (E1), 17β-estradiol (E2) and 17α-ethinylestradiol (EE2) individually and mixed at equal proportions (1:1:1) on Desmodesmus subspicatus and Pseudokirchneriella subcapitata in single and combined cultures (S+) at different exposure times based on algal growth (in vivo chlorophyll fluorescence and cell counting) and coenobium formation. EE2 and E2 were more toxic to individual and combined (S+) cultures than was E1. The frequency of coenobium formation by D. subspicatus increased significantly for all estrogens and all concentrations. After 96 h, D. subspicatus prevailed in S+. The results of the exposure to E+ suggested a less-than-additive effect on D. subspicatus and S+ and additive effect on P. subcapitata. Toxic effects occurred for both species exposed to E+ with individual estrogen concentrations below the NOEC of each species. Assays must include changes in response due to the exposure of more than one species to more than one estrogen. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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