plSSN : 0374-8111 | elSSN : 2287-8815
plSSN : 0374-8111 | elSSN : 2287-8815
plSSN : 0374-8111elSSN : 2287-8815
Effects of Water Temperature and Bio-logger External Attachment on Oxygen Consumption of Korean Rockfish Sebastes schlegelii
이근수·강필준·오승용*
한국해양과학기술원 해양생명자원연구부
The oxygen consumption rate (OCR) of Korean rockfish Sebastes schlegelii (mean weight 573.9 g) was measured using a closed flow-through respirometer under two external tagging conditions [non-tagged control (C) and biologger external bio-logger attachment (BEA)] and three water temperatures (15, 20, and 25°C). Water temperature significantly affected OCR (P<0.001), while BEA had no significant effect (P>0.05). OCR showed a linear relationship with temperature (T) between 15 to 25°C: OCR=-57.0229+7.8729T (r2=0.95, P<0.0001) in control and OCR=- 79.1333+8.7433T (r2=0.97, P<0.0001) in BEA. The highest Q10 was observed from 15 to 20°C in the control and from 20 to 25°C in the BEA group. BEA consistently showed higher Q10 values than the control across all temperature ranges. Water temperature significantly influenced metabolic energy loss (MEL) rate (P<0.001); however, MEL increased more rapidly with temperature in BEA than in the control. These findings offer quantitative insights into the metabolic response of Korean rockfish to bio-logger attachment under controlled thermal conditions.
Bio-logger, Tagging, Thermal effect, Marine fish