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

Hwang, Un-Ki (West Sea Fisheries Research Institute, Fisheries Resources & Environment Division)
Ryu, Hyang-Mi (West Sea Fisheries Research Institute, Fisheries Resources & Environment Division)
Kim, Sung-Gil (Marine Environment Management Division, National Fisheries Research & Development Institue (NFRDI))
Park, Jong-Soo (West Sea Fisheries Research Institute, Fisheries Resources & Environment Division)
An, Kyoung-Ho (West Sea Fisheries Research Institute, Fisheries Resources & Environment Division)
Publication Information
Environmental Analysis Health and Toxicology / v.25, no.1, 2010 , pp. 11-18 More about this Journal
Abstract
Toxicity assessment of ocean dumping wastes (dye waste, urban sewage, food waste) were examined in the fertilization and embryo development rates of the Sea Urchin, Hemicentrotus pulcherrimus. 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 the collection of both gametes. The fertilization and embryo development rates test were performed for 10 min and 64 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 suddenly decreased with increasing of ocean dumping waste sludge elutriate concentrations. The fertilization and normal embryogenesis rates were significantly inhibited in all waste sludge elutriate from dye waste ($EC_{50}$=4.37; $EC_{50}$=1.76), urban sewage ($EC_{50}$=5.79; $EC_{50}$=2.00) and food waste ($EC_{50}$=7.68; $EC_{50}$=2.16), 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 that biological assay using the fertilization and embryo development rates of H. pulcherrimus are very useful test method for the ecological toxicity assessment of ocean dumping wastes.
Keywords
Hemicentrotus pulcherrimus; fertilization rate; embryogenesis; ocean dumping wastes; toxicity;
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Times Cited By KSCI : 6  (Citation Analysis)
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