The effects of chlorination of wastewater on fertilization in some marine invertebrates
- 115 Downloads
Unchlorinated domestic sewage was found to be a relatively weak inhibitor of external fertilization in 3 marine invertebrates. Chlorinated sewage was a potent spermicide, active in inhibiting fertilization in concentrations of available chlorine as low as 0.05 ppm. Sodium hypochlorite in seawater duplicated the effect, and excess sodium thiosulfate terminated it. The possibility of chlorine disinfection affecting reproductive success in the vicinity of outfalls is discussed.
KeywordsSodium Wastewater Chlorine Sewage Sodium Thiosulfate
Unable to display preview. Download preview PDF.
- Brook, A. and A. Baker: Chlorination at power plants: impact on phytoplankton productivity. Science, N. Y. 176, 1414–1415 (1972).Google Scholar
- Farber, L. (Ed.): Standard methods for the examination of water and wastewater, 626 pp. New York: American Public Health Association, Inc. 1960.Google Scholar
- Gould, M.: Euchiuroid worms: Urechis. In: Methods in developmental biology, pp 163–171, Ed. by F. H. Wilt and N. K. Wessells. New York: Thomas Y. Crowell Co. 1967.Google Scholar
- Grigg, R. and R. Kiwala: Some ecological effects of discharged wastes on marine life. Calif. Fish Game 56, 145–155 (1970).Google Scholar
- Hamilton, D. H., Jr., D. A. Flemer, C. V. Keefe and J. A. Mihursky: Power plants: effects of chlorination on estuarine primary production. Science, N. Y. 169, 197–198 (1970).Google Scholar
- Hirayama, K. and R. Hirano: Influences of high temperature and residual chlorine on marine phytoplankton. Mar. Biol. 7, 205–213 (1970).Google Scholar
- Kobayashi, N.: Fertilized sea urchin eggs as an indicatory material for marine pollution bioassay, preliminary experiments. Publs Seto mar. biol. Lab. 18, 379–406 (1971).Google Scholar
- North, W. J.: An investigation of the effects of discharged wastes on kelp. Publs Calif. St. Wat. Qual. Control Bd 26, 1–124 (1964).Google Scholar