Heamatological parameters as first line indicators of fishing stress in different fish species

Abstract

For carp fish species, there is no information available regarding the netting stress response during fish harvesting. It is supposed that physiological stress occurred after the capture of fish through netting. There are different studies which used different methods to access the stress level in fish. We conceptualized the study to evaluate the netting stress response in different species of fish including Rohu, Mori and Silver carp through hematological parameters and cortisol level. Two groups were made one as a control and other was experimental group. After the experiment, the hematological parameters including white blood cells (WBCs/×103μL), hemoglobin (HGB/g/dL), hematocrit (HCT %), mean corpuscular hemoglobin concentration (MCHV/g/dL), hematocrit (%), red blood cells (RBCs/×106μL), mean corpuscular hemoglobin (MCH/ g/dL), mean cell volume (MCV/fL), platelets (/ulRDW-CV (%)), MPV (fl) and platelets (PLTs/×10 6 μL), Blood histology and blood cells count were also calculated in both groups. Apart from this, total Serum cortisol was extracted in both groups to measure the stress level. Our results showed that there was significantly difference in all the parameters studied in our investigation. The findings indicated that netting stress cause the variation in the above-mentioned parameters which are dangerous for fish health. Our findings provided the founding principles of these netting stress in fish and introduces their potential as continuous monitoring tools. Finally, we consider promising avenues of research that could be prioritized in the field of stress physiology of fishes.