구.농수식품
Abstract
Hyun-Ki Honga, Ludovic Donaghya, Chang-Keun Kangb, Hyun-Sil Kanga, Hee-Jung Leea, Heung-Sik Parkc, Kwang-Sik Choia,*
a School of Marine Biomedical Science (BK21 PLUS), Jeju National University 102, Jejudaehakno, Jeju 690-756, Republic of Korea
b School of Environmental Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea
c Marine Ecosystem and Environment Research Division, Korea Institute of Ocean Science and Technology (KIOST), Ansan 425-600, Republic of Korea
*Corresponding author : Kwang-Sik Choi
Abstract
Two years after the Hebei Spirit oil spill occurred off the west coast of Korea, we determined sub-lethal effects of the spilled oil on hemocyte parameters of Ruditapes philippinarum in the damaged areas. Clams in the spilled sites displayed unusually high proportion of granulocytes, which may result in higher phagocytosis capacity and reactive oxygen species production. Hemocytes in clams from the polluted sites also displayed less DNA damage and mortality than in the control site, possibly due to a faster phagocytosis of the impaired cells. Glycogen, the major energetic reserve, was depleted in clams from the spilled sites, potentially due to energetic consumption for maintenance of a large pool of granulocytes, detoxification processes and oxidative stress. Modified hemocyte parameters in clams in the spilled area, may reflect sub-lethal physiological stresses caused by the residual oils in the sediment, in conjunction with environmental modifications such as food availability and pathogens pattern.
Keywords : Hebei Spirit oil spill; Hemocytes; Ruditapes philippinarum; Cellular defense; Stresses
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