تعيين برخي از فاكتورهاي خوني ماهي سفيد درياي خزر (Rutilus frissii Kutum) در مراحل مختلف رشد گنادي

Determination of some hematological parameters on kutum (Rutilus frisii kutum) and their changes in different stages of gonad growth and spawning migration from the sea to river.

This study examined some hematological parameters of Rutilus frisii kutum and their change during spawning migration from the Caspian sea to their rivers estuaries. In this study at the first 105 fish were caught from the sea and 110 fish were cavght from the estuaries by beach seine and throwing wets. All fish were biometery and their blood was taken from peduncie by heparine syrings. Gonads growth stegs were determined by Bisswas method on seven phase. Haematological parameters studied include: erythrocyte counts, haematocrit (Ht), haemoglobin concentration (Hb), mean cell volum (MCV), mean cell haemoglobin (MCH), mean cell haemoglobin concentration (MCHC) Normal red blood parameters changed according to maturation stages, sex and sites. Then, we compared them with those coming from fish captured in the sea and rivers estuaries. Discriminant analysis showed that mean of number red cells were 1232500±40400 and white cells were 7281±463 cells in a cubic mililer of blood, lymphocytes 68.11±15.41%, neutrophiles 21.2±5.54 percent, monocytes 7.2±12.3 percent and eosinophils 3.48±103. No unripe neutrophyl was seen in eosinophils in during maturation stages but 1% of it was seen after intered to rivers. The mean of hematocrit was 41.84±7.72 which is a decreasing process with increasing gonad growth phase. The blood indies were, MVC 383.81±92.8 MCH 70.14±32.17, MCHC 12.41±8.23. According to gonad growth phases, increasing the number of red cell, haemoglobin concentration, lymphocyte and haematocrit were decrease but the number of white clles, neutrophyl and eosinophilis were increased in last phases of maturation.