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Toxicity Assessment of Ocean Dumping Wastes Using Fertilization and Embryo Development Rates in the Sea Urchin (Strongylocentrotus nudus)  

Hwang, Un-Ki (West Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
Rhee, Choong-Won (West Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
Kim, Kwang-Seop (West Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
Kim, Hyoung-Choul (West Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
An, Kyoung-Ho (West Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
Park, Seung-Youn (West Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
Publication Information
Environmental Analysis Health and Toxicology / v.24, no.1, 2009 , pp. 25-32 More about this Journal
Abstract
Toxicity of ocean dumping wastes(dye waste, urban sewage, food waste) were examined by observing fertilization and embryo development rates of the Sea Urchin, Strongylocentrotus nudus. Spawning was induced by injecting 1 mL of 0.5 M KCl into coelomic cavity. Males released white or cream-colored sperms and females released yellow or orange-colored eggs. Experiments were began within 30 min after the collection of both gametes. The fertilization and embryo development rates tests were performed for 10 min and 48 h after fertilization, respectively. The fertilization and embryo development rates in the control condition(not including ocean dumping wastes sludge elutriate) were greater than 90%, but markedly decreased with increasing concentrations of ocean dumping waste sludge elutriate. The fertilization and normal embryogenesis rates were significantly inhibited in all waste sludge elutriate from dye waste($EC_{50}$=5.76; $EC_{50}$=4.53), urban sewage($EC_{50}$=9.82; $EC_{50}$=9.67) and food waste($EC_{50}$=3.90; $EC_{50}$=3.27), respectively. The NOEC(>3.13%) and LOEC(3.13%) of fertiliztion and normal embryogenesis rates very similar in all waste sludge elutriate. These results suggest biological assay using the fertilization and embryo development rates of S. nudus are very useful test method for the ecological toxicity assessment of ocean dumping wastes.
Keywords
Strongylocentrotus nudus; fertilization rate; embryogenesis; ocean dumping wastes; toxicity;
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Times Cited By KSCI : 6  (Citation Analysis)
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