Changes in Hematological, Biochemical and Non-specific Immune Parameters of Olive Flounder, Paralichthys olivaceus, Following Starvation

Abstract

Triplicate groups of fed and starved olive flounder, Paralichthys olivaceus (body weight: 119.8±17.46 g), were examined over 42 days for physiological changes using hematological, biochemical, and non-specific immune parameters. No significant differences in concentrations of blood hemoglobin and hematocrit and plasma levels of total cholesterol, aspartate aminotransferase, alanine aminotransferase, glucose, and cortisol were detected between fed and starved groups at any sampling time throughout the experiment. In contrast, plasma total protein concentrations were significantly lower in starved fish than in fed fish from day 7 onwards. Moreover, plasma lysozyme concentrations were significantly higher in starved flounder from day 21 onwards. This result confirms that the response of olive flounder to short-term (less than about 1.5 months) starvation consists of a readjustment of metabolism rather than the activation of an alarm-stress response. The present results indicate that starvation does not significantly compromise the health status of fish despite food limitation.

The Effect of Kefir as a Dietary Supplement on Nonspecific Immune Response and Disease Resistance in Juvenile Rainbow Trout, Oncorhynchus mykiss (Walbaum 1792)

“…Hematocrit levels (% red blood cells) were determined after centrifugation in a microhematocrit centrifuge at 12,000 g for 5 min. Percent hematocrit values were inferred using a hematocrit reader scale and the mean value of hematocrit values of sampled blood was recorded for each fish (Kim et al ).…”

Effect of Short-Term Starvation on Serum Metabolites, Antioxidant Enzymes and Endogenous Reserves of Rainbow Trout, Oncorhynchus mykiss

“…These factors may be one of the most important reasons for the change in serum metabolite levels of fish. Fasting can be used to show species-specific differences in the metabolism and regulation of blood glucose (Kim et al, 2014). In this study, glucose level decreased significantly in the T3 group when compared to the other groups.…”

“…In this study, glucose level decreased significantly in the T3 group when compared to the other groups. Kim et al (2014) reported a decrease in plasma glucose levels of the salmonids such as brook trout, S. fontinalis (Heming and Paleczny, 1987), Chinook salmon, O. tshawytscha (Barton et al, 1988) and Rainbow trout, O. mykiss (Farbridge and Leatherland, 1992). On the other hand, there are studies indicating an increase in plasma glucose levels of fish such as, jundia, Rhamdia quelen (Barcellos et al, 2010), Dicentrarchus labrax, European seabass (Chatzifotis et al, 2011), Senegalese sole, Solea senegalensis (Costas et al, 2011) or red porgy (Caruso et al, 2010), Antarctic fish, Notothenia coriiceps .…”

Protein and lipid metabolism adjustments in silver catfish (Rhamdia quelen) during different periods of fasting and refeeding

“…According to Rossi et al (2015), the liver is the tissue which is most active metabolically in the mobilization of energy stocks to satisfy physiological needs. Kim et al (2014) have also observed a decrease in plasma protein in the olive flounder during starvation. This initial reduction in protein reserves demonstrates the high susceptibility of this species to situations of food restriction.…”