Potential molecular biomarkers of crowding stress in Atlantic cod, Gadus morhua and their importance in health management
Journal Title: Animal Biology & Animal Husbandry - International Journal of the Bioflux Society - Year 2012, Vol 4, Issue 2
Abstract
Sub-adult Atlantic cod, Gadus morhua were subjected to short-term crowding stress in order to map out potential biomarkers of stress response of this fish at the molecular level. This short review summarizes the results of the different studies done to better understand the stress physiology of this fish. Short-term overcrowding resulted in the increase in expression levels of genes related to antibacterial activity (BPI/LBP and g-type lysozyme), inflammation (IL-1 and IL-8), metabolism and antioxidant defense. It also demonstrated that most of the gene transcripts attained peak expression levels even when the plasma cortisol had returned to its baseline level. The expression of GLUT-3 and -4 significantly increased as a result of overcrowding, indicating the possible roles of these genes in the stress response particularly during glucose metabolism. Among the antioxidants, the Cu/Zn SOD maintained high expression levels, thus, can be potentially used a molecular biomarker for crowding stress.
Authors and Affiliations
Christopher Caipang
Keywords
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