수온에 따른 강도다리 Platichthys stellatus의 산소소비 리듬 = Diel Rhythm of Oxygen Consumption of the Starry Flounder Platichthys stellatus by Water Temperature

다국어 초록 (Multilingual 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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