Search

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The simple, useful, rapid, reproducibility and inexpensive luminescent bacteria toxicity test had become the preferred method for acute toxicity testing of water quality. Detection principle of luminescent bacteria toxicity test, common types of luminescent bacteria, and advances in detection technology of luminescent bacteria toxicity test were introduced in this paper. In addition, acute toxicity testing of water quality research status for industrial wastewater, municipal wastewater, drinking water and surface water, and its applications in the monitoring of water pollution rapid response in emergencies of luminescent bacteria toxicity test were also reviewed. The results show that a convenient, rapid and stable online acute water toxicity testing methods and equipments for water quality monitoring, which are developed by full using of the advantages of luminescent bacteria, will be a research focus of luminescent bacteria toxicity test in the future. [ABSTRACT FROM AUTHOR]

In order to accurately evaluate the comprehensive ecotoxicity of domestic wastewater and the toxicity reduction efficiency of different treatment processes, standardized assays focusing on Vibrio fischeri , SOS/umu test and yeast estrogen screen were applied. Simultaneously, male zebrafish was used to address the mode of action of endocrine disrupting effects of wastewater and reclaim water on aquatic life. Results of this study indicated that the influent was severely polluted:highly acute toxicity, genotoxicity and estrogenicity were observed. After the secondary biological treatment, the above toxicities were significantly reduced, making the water quality improved. However, the estrogencity of secondary effluent was detected at 1.89 ng·L -1 , which still posed potential risk on the aquatic life in receiving water. In addition, the up-regulation of estrogen receptor ( esr 1 ) and vitellogenin ( vtg 1 ) in the livers of zebrafish was observed after exposure to 2.5 times concentrated wastewaters, which demonstrated that wastewater modulates hormonal activities of aquatic life by disturbing target genes expression. Moreover, the slight down-regulation of esr 1 was observed in the gonads. These observations reflect that the evaluation of biological toxic effect should be analyzed in different tissues or organs, so that more comprehensive information about the adverse effects of wastewaters on aquatic life can be obtained.