수온에 따른 강도다리 Platichthys stellatus의 산소소비 리듬
Diel Rhythm of Oxygen Consumption of the Starry Flounder Platichthys stellatus by Water Temperature
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참고문헌
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초록
Diel rhythm of oxygen consumption (OC) of the starry flounder Platichthys stellatus was measured at different water temperatures in a closed recirculating seawater system with a respiratory chamber. The fish consumed 70.5, 79.7, and 90.6mg O2/kg/hr at 15, 20, and 25℃, respectively, showing a linear increase in OC with water temperature. The OC of fish showed a clear diel rhythm, with lower values during the day and higher values at night, in accordance with the light (09:00-21:00) and dark (21:00-09:00) phases of the diel cycle (12L:12D) in water at 15 and 20℃. However, the OC of the fish showed an unclear diel rhythm with the light and dark phases of the diel cycle at 25℃. The respective OC at 15, 20 and 25℃ was 63.8, 72.4, and 88.4mg O2/kg/hr during the light phases and 77.2, 87.1, and 92.8mg O2/kg/hr during the dark phase. The starry flounder is thought to be a nocturnal fish with a higher OC at night, while it rests during the day. Its OC was the most stable in the light, when it did not feed. Consequently, the night-time OC is the active OC and the day-time OC is the resting OC in the starry flounder.
Abstract
Diel rhythm of oxygen consumption (OC) of the starry flounder Platichthys stellatus was measured at different water temperatures in a closed recirculating seawater system with a respiratory chamber. The fish consumed 70.5, 79.7, and 90.6mg O2/kg/hr at 15, 20, and 25℃, respectively, showing a linear increase in OC with water temperature. The OC of fish showed a clear diel rhythm, with lower values during the day and higher values at night, in accordance with the light (09:00-21:00) and dark (21:00-09:00) phases of the diel cycle (12L:12D) in water at 15 and 20℃. However, the OC of the fish showed an unclear diel rhythm with the light and dark phases of the diel cycle at 25℃. The respective OC at 15, 20 and 25℃ was 63.8, 72.4, and 88.4mg O2/kg/hr during the light phases and 77.2, 87.1, and 92.8mg O2/kg/hr during the dark phase. The starry flounder is thought to be a nocturnal fish with a higher OC at night, while it rests during the day. Its OC was the most stable in the light, when it did not feed. Consequently, the night-time OC is the active OC and the day-time OC is the resting OC in the starry flounder.
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