고수온 스트레스에 대한 둥근전복, Haliotis discus discus (Reeve, 1846), 말전복, Haliotis gigantea의 항산화 및 면역학적 반응 (Effects on the antioxidant and immunological parameters in two species of the abalone, Haliotis discus discus and Haliotis gigantea during thermal stress)

서지정보

· 발행기관 : 한국패류학회
· 수록지 정보 : The Korean Journal of Malacology / 33권 / 2호 / 73 ~ 81페이지
· 저자명 : 민은영, 김신후, 이정식, 강주찬

초록

A study was conducted to evaluate the effects of elevated water temperature on antioxidant and immunological response in the abalones, Haliotis discus discus and Haliotis gigantea. The abalones were exposed to various water temperature; 20, 21, 22, 24, 26 and 28℃ for 96 hours. After thermal stress for 96 hours, in the control, superoxide dismutase (SOD) activities in hepatopancreas of H. gigantea were higher (1.3 times) than the values in H. discus discus. Although SOD activities showed no significant differences in H. discus discus, the values in H. gigantea were significantly increased in 24℃ or higher compared to the control after 24 hours exposure. Catalase (CAT) activities in hepatopancreas of H. discus discus were higher (1.4 times) than the values of H. gigantea in the control. After thermal stress (≥ 26℃), CAT activities significantly increased in both species compared to the control. The phenoloxidase (PO) activity of hemolymph was decreased in both species exposed to high temperature (≥ 26℃) compared to the control (P < 0.05). The values of lysozyme were significantly decreased in H. discus discus exposed to 28℃, and in H. gigantea to 26℃. In conclusion, in both species, there was a significant increase on antioxidant abilities (CAT) and a decrease on immunological parameters (PO and lysozyme) after thermal stress of 26℃ or higher. Also, antioxidant enzymes, SOD activities significantly increased in H. gigantea, but there was no significance in H. discus discus after thermal stress. These results suggested that H. gigantea is considered to be more sensitive than H. discus discus on thermal stress even though the similar warm current type.

영어초록

A study was conducted to evaluate the effects of elevated water temperature on antioxidant and immunological response in the abalones, Haliotis discus discus and Haliotis gigantea. The abalones were exposed to various water temperature; 20, 21, 22, 24, 26 and 28℃ for 96 hours. After thermal stress for 96 hours, in the control, superoxide dismutase (SOD) activities in hepatopancreas of H. gigantea were higher (1.3 times) than the values in H. discus discus. Although SOD activities showed no significant differences in H. discus discus, the values in H. gigantea were significantly increased in 24℃ or higher compared to the control after 24 hours exposure. Catalase (CAT) activities in hepatopancreas of H. discus discus were higher (1.4 times) than the values of H. gigantea in the control. After thermal stress (≥ 26℃), CAT activities significantly increased in both species compared to the control. The phenoloxidase (PO) activity of hemolymph was decreased in both species exposed to high temperature (≥ 26℃) compared to the control (P < 0.05). The values of lysozyme were significantly decreased in H. discus discus exposed to 28℃, and in H. gigantea to 26℃. In conclusion, in both species, there was a significant increase on antioxidant abilities (CAT) and a decrease on immunological parameters (PO and lysozyme) after thermal stress of 26℃ or higher. Also, antioxidant enzymes, SOD activities significantly increased in H. gigantea, but there was no significance in H. discus discus after thermal stress. These results suggested that H. gigantea is considered to be more sensitive than H. discus discus on thermal stress even though the similar warm current type.

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