Abstract

Hamid Reza Jamalzadeh , Shahrbanoo Oryan and Mohammad Reza Ghomi

Hematological analysis can provide valuable knowledge for monitoring the health and conditions of both wild and cultured fishes. The objective of this work was to measure and compare of blood parameters and studying their correlations for Caspian salmon Salmo trutta caspius. The values for Hb and HCT were higher for diploid than triploid Caspian salmon (P < 0.05). Triploidisation in Caspian salmon led to a decrease of erythrocyte number about 16%. Diploid Caspian salmon showed the higher level in WBC count than triploid and also eosinophile, neutrophile, and large-lymphocyte revealed the same results (P < 0.05) and only monocyte resulted no significant difference (P > 0.05) between two ploidies. Lymphocyte individually showed more values for triploid than diploid (P < 0.05). There was not a significant difference ( P > 0.05) in MCV, MCH, and MCHC among diploid and triploid fishes and we found their proportions with greater values for triploid Caspian salmon. The highest and lowest correlation between hematological parameters for diploid Caspian salmon has been found for RBCMCH (r = -0.81, n = 30, P < 0.05) and RBC-MCHC (r = -0.02, n = 30, P > 0.05), respectively. The greatest and lowest correlation for triploid Caspian salmon were found for MCV-MCH (r = 0.92, n = 30, P < 0.05) and Hb-RBC (r = -0.01, n = 30, P > 0.05), respectively.