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논문 기본 정보

자료유형
학술저널
저자정보
임한규 (목포대학교) Hyon Sob Han (Kunsan National University) 허준욱 (군산대학교)
저널정보
한국수산과학회 Fisheries and Aquatic Sciences Fisheries and Aquatic Sciences 제24권 제2호
발행연도
2021.1
수록면
99 - 107 (9page)

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초록· 키워드

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Water temperature (WT) is a major environmental factor of metabolic rate in fish; it directly affects food intake, ammonia excretion, oxygen consumption (OC), growth, and survival. Thus, the purpose of this study was to investigate changes in the OC and the hematological response of olive flounder Paralichthys olivaceus because of WT changes. In Exp. I, WT was increased from 20℃ to 29℃ within 18 h and maintained at 29℃ for 96 h. Then, WT was decreased from 29℃ to 20℃ within 18 h and maintained at 20℃ for 24 h. In Exp. II, WT was decreased from 20℃ to 11℃ within 18 h and maintained at 11℃ for 96 h. Then, WT was increased from 11℃ to 20℃ within 18 h and maintained at 20℃ for 24 h. The Exp. III maintained that the Exp. I and II was consecutively. In Exp. I, the OC increased from 116.7 mg O2 kg?1 hr?1 to 317.5 mg O2 kg?1 hr?1 with increasing WT. In Exp. II, the OC decreased from 96.5 mg O2 kg?1 hr?1 to 71.3 mg O2 kg?1 hr?1 with decreasing WT. In Exp. III, OC tended to increase or decrease in inverse proportion to temperature. In Exp. I, cortisol, glucose, and aspartate aminotransferase (AST) values increased with increasing WT. In Exp. II, Cl?, osmolality, AST, and alanine aminotransferase (ALT) values significantly changed during the experimental period: glucose values increased, whereas cortisol values decreased with decreasing WT. Exp. III was shown to be a more stressful environment to olive flounder than Exp. I and Exp. II. The results of our study will be useful for evaluating current aquaculture procedures of olive flounder and developing techniques to minimize stress in aquaculture farms.

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