book_cover_img The Korean Society of Marine Life Science Journal of Marine Life Science eISSN 2508-7134
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Year of Launching : 2016
Frequency : Twice a year (June 15, December 15)
Doi Prefix : 10.23005/ksmls.

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ISSN : 2508-7134(Online)
Journal of Marine Life Science Vol.3 No.2 pp.87-95
DOI :

The Effects of Starvation on Physiological Changes and Stress Response in Cultured Cobitid Loach (Misgurnus anguillicaudatus) Exposed to Sodium Nitrite

Jun Wook Hur1*, Hyun Woo Gil1, In-Seok Park2
1Bio-Monitoring Center, Sejong 30121, Korea
2Department of Marine Bioscience, College of Ocean Science and Technology, Korea Maritime and
Ocean University, Busan 49112, Korea

Corresponding Author Jun Wook Hur Bio-Monitoring Center, Sejong 30121, Korea E-mail : junwhur@hanmail.net

Abstract

To investigate effects of starvation on physiological changes, stress response, and survival of cobitid loach (Misgurnus anguillicaudatus) exposed to sodium nitrite (NaNO2), a 4- week experiment was conducted. Fewer fish survived in the starved group than those in the fed group during the experiment. Starvation resulted in growth retardation, leading to differences in body length and body depth between fed and starved groups. The fed gorup continued to grow and remained in good condition. Blood chemical analysis (plasma cortisol and glucose) showed significant differences in stress response to nitrite exposure between fed and starved groups (p < 0.05). These results suggest that all parameters employed in this study to assess effects of starvation with NaNO2 stress are useful information for researching nutritional status in cobitid loach.

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