Investigation of Long-Term Stress Induced by Several Stressors by Determination of the Concentration of Different Blood Plasma Components in a Model of Prussian Carp (Carassius auratus gibelio Bloch, 1783) and Common Carp (Cyprinus carpio L., 1758)
Several compounds (carbohydrates, proteins, hormones, etc.) were used in fish to quantify the level of stress. Our investigations focused on two parameters of the blood plasma: plasma glucose and serum/plasma fructosamine (SeFa) that has not been tested on fish as yet. Experiments were conducted on two fish species. The concentrations of these components were investigated on Common carp (Cyprinus carpio L., 1758) and on Prussian carp (Carassius auratus gibelio Bloch, 1783) from the Gödöllő-Isaszeg pond system by creating conditions different from ideal. Stress effects caused a fluctuating tendency in blood plasma glucose levels each week for both Common carp and Prussian carp, thus, there was no steady growth. However, SeFa concentrations exactly followed stress effects, moreover, it tolerated short-term negative effects (handling of fish, blood sampling) and did not cause alterations at individuals blood samplings. This experimental method can offer assistance to farmers in the daily routine (e.g. in fish transport) and in the technology of propagation.
KeywordsStress serum/plasma fructosamine plasma glucose Common carp Prussian carp
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The authors thank Ferenc Imre, Károly Oláh (Béke Anglers’ Association) and Krisztián Szabó (Dinnyés Fish Hatchery) for the experimental fish stocks.
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