ISSN : 1225-3480
The unwanted artificial oil-spill has severely contaminated the coastal environment in the world.level of contamination has so far been monitered by various indicator species including mussel, oysters, flounder, and cockle. In this study, we decided to use the oyster as a model organism to observe the morphological changesbeingexposed to the artificial oil-spill in the coastal areas in Taean, Korea.The oysters were collected from four local sites (Sindu-ri, Uiwang-ri, Jonghyeon-dong, Ansan and Uihang-ri) exposed to various levels of pollution after an oil spill in Taean. Microscopic analysis of the hepatopancreatic microstructure in the digestive gland from the collected oysters show that the swelling, whorl, and destruction phenomenon of the nuclear membrane, a well-known microstructure induced by heavy metal exposure, was observed. Nuclear body (Nb), anothertypical characteristic of contamination or infection were also observed in some samples.necrosis was observed in tissue samples collected from the area with a high degree ofoil pollution. In addition, parasite-like particles (virus, perkinsus) were observed in most samples. Taken together, these results suggest that oil contamination in the oyster habitatsinfluences the cytopathological changes in Crassostrea gigas.
Barsiene, J., Schiedek, D., Rybakovas, A., Syvokiene, J., Kopecka, J., and Forlin, L. (2006) Cytogenetic and cytotoxic effects in gill cells of the blue mussel Mytilus spp. from different zones of the Baltic Sea. Mar Pollut Bull, 53: 469-478.
Boehm, P.D., Neff, J.M., and Page, D.S. (2007) Assessment of polycyclic aromatic hydrocarbon exposure in the waters of Prince William Sound after the Exxon Valdez oil spill: 1989-2005. Mar Pollut Bull, 54: 339-356.
Boehm, P.D., Page, D.S., Brown, J.S., Neff, J.M., and Burns, W.A. (2004) Polycyclic aromatic hydrocarbon levels in mussels from Prince William Sound, Alaska, USA, document the return to baseline conditions. Environ Toxicol Chem, 23: 2916-2929.
Boehm, P.D., Page, D.S., Brown, J.S., Neff, J.M., and Edward Bence, A. (2005) Comparison of mussels and semi-permeable membrane devices as intertidal monitors of polycyclic aromatic hydrocarbons at oil spill sites. Mar Pollut Bull, 50: 740-750.
Bu-Olayan, A.H., and Subrahmanyam, M.N. (1997) Accumulation of copper, nickel, lead and zinc by snail, Lunella coronatus and pearl oyster, Pinctada radiata from the Kuwait coast before and after the Gulf War oil spill. Sci. Total Environ, 197: 161-165.
Carro, N., Cobas, J., and Maneiro, J. (2006) Distribution of aliphatic compounds in bivalve mollusks from Galicia after the Prestige oil spill: spatial and temporal trends. Environ Res, 100: 339-348.
Choi, H.J., Ahn, I.Y., Kim, K.W., Lee, Y.S., Lee, I.S., and Jeong, K.H. (2003) Subcellular accumulation of Cu in the Antarctic bivalve Laternula elliptica from a naturally Cu-elevated bay of King George Island. Polar biology, 26: 601-609.
Choi, H.J., Ahn, I.Y., Lee, Y.S., Kim, K.W., and Jeong, K.H. (2003) Histological Responses of the Antarctic Bivalve Laternula elliptica to a Short-term Sublethal-level Cd Exposure. Ocean polar research, 25(2): 147-154.
Choi, H.J., Ahn, I.Y., Ryu, S.K., Lee, Y.S., Lee, I.S., and Jeong, K.H. (2001) Preliminary Evidence for a Metallothionein-like Cd-binding Protein in the Kidney of the Antarctic Clam Laternula elliptica. Ocean polar research, 23(4): 337-345.
Diaz-Mendez, F.M., Rodriguez-Ariza, A., Usero-Garcia, J., Pueyo, C., and Lopez-Barea, J. (1998) Mutagenic activation of aromatic amines by molluscs as a biomarker of marine pollution. Environ Mol Mutagen, 31: 282-291.
Lee, Y.S., Ahn, I.Y., Kim, W.J., and Jeong, K.H. (2002) An Immunohistochemical and Ultrastructural Study of the Heavy Metals accumulated in the kidney of an Antarctic Clam, Laternula elliptica. The Korean Journal of Malacology, 18(1): 15-21.
Lee, Y.S., Jo, Y.H., Byun, I.S., Kang, S.W., Cho, E.M., Han, Y.S., Choi, S.H., Park, H.S., Kho, W.G., Ahn, I.Y., and Jeong, K.H. (2006) Bioaccumulation of Heavy Metals in Ruditapes philippinarum. Korean Journal of Malacology, 22: 157-165.R
Lee, Y.S., Jo, Y.H., Han, Y.S., Kho, W.G., Ahn, I.Y., and Jeong, K.H. (2006) Bioaccumulation of Heavy Metals in Intestine of Nacella concinna. The Korean Journal of Malacology, 22: 83-91.
Page, D.S., Boehm, P.D., Brown, J.S., Neff, J.M., Burns, W.A., and Bence, A.E. (2005) Mussels document loss of bioavailable polycyclic aromatic hydrocarbons and the return to baseline conditions for oiled shorelines in Prince William Sound, Alaska. Mar Environ Res, 60: 422-436.
Schrope, M. (2010) The lost legacy of the last great oil spill. Nature, 466: 304-305.
Thomas, R.E., Brodersen, C., Carls, M.G., Babcock, M., and Rice, S.D. (1999) Lack of physiological responses to hydrocarbon accumulation by Mytilus trossulus after 3-4 years chronic exposure to spilled Exxon Valdez crude oil in Prince William Sound. Comp Biochem Physiol C Pharmacol Toxicol Endocrinol, 122: 153-163.
Thomas, R.E., Harris, P.M., and Rice, S.D. (1999) Survival in air of Mytilus trossulus following long-term exposure to spilled Exxon Valdez crude oil in Prince William Sound. Comp Biochem Physiol C Pharmacol Toxicol Endocrinol, 122: 147-152.
