Effect of salinity on survival, oxygen consumption and blood physiology of Korean rockfish Sebastes schlegelii SCOPUS KCI

Title
Effect of salinity on survival, oxygen consumption and blood physiology of Korean rockfish Sebastes schlegelii
Author(s)
Oh, S.-Y.; Kim, C.-K.; Jang, Y.-S.; Choi, H.-J.; Myoung, J.-G.
KIOST Author(s)
Oh, Sung Yong(오승용)Choi, Hee Jung(최희정)Myoung, Jung Goo(명정구)
Publication Year
2014
Abstract
The effect of salinity on the survival, oxygen consumption and blood physiology of Korean rockfish Sebastes schlegelii (body weight 97.4 ± 1.7 g, mean ± SD) was investigated at nine different salinities of 33.4 (control), 33.1, 32.8, 32.2, 31.0, 28.7, 23.9, 14.5 and 3.8 psu, respectively. Survival and blood physiology were measured at each salinity in two separate trials of 96 and 24 hr duration, respectively. Oxygen consumption rate (OCR) was determined at stepwise salinity exposure (33.4→33.1→ 32.8→32.2→31.0→28.7→23.9→14.5→3.8 psu) with an interval of 24 hr for each salinity. No death of fishes were observed in the range of 33.4 to 14.5 psu, but the survival rate was reduced to 26.7% at 3.8 psu after 96 hr. The OCRs were not significantly different in the range 33.4 to 28.7 psu (p > 0.05), but significantly increased until 14.5 psu and then drastically decreased at 3.8 psu compared to the control (p < 0.05). The concentrations of plasma Na+ and Cl- were significantly lower in fish exposed at 3.8 psu compared to the control (p < 0.05). The results of this study provide evidence that S. schlegelii exposed to concentrations below 23.9 psu show significant physiological responses to tolerate salinity changes under the experimental conditions we established.
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2929
DOI
10.4217/OPR.2014.36.2.135
Bibliographic Citation
Ocean and Polar Research, v.36, no.2, pp.135 - 143, 2014
Publisher
Korea Ocean Research and Development Institute
Keywords
Blood physiology; Oxygen consumption; Salinity; Sebastes schlegelii; Survival
Type
Article
Language
Korean
Document Type
Article
Publisher
Korea Ocean Research and Development Institute
Related Researcher
Research Interests

Fish ecology,Fish taxonomy,Fish stock enhancement,어류생태,어류분류,어류자원증식

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