Comparative Morphological Study of Erythrocytes of Brook Trout, Tench And Catfish

Досліджено еритроцити лина (Tinca tinca L.), сома звичайного (Silurus glanis L.) та форелі струмкової (Salmo trutta L.). Наведено відмінності щодо розмірів червонокрівців, їх щільності, ядерно-цитоплазматичного співвідношення й умісту гемоглобіну в крові вищеназваних видів.Hematology parameters of tench (Tinca tinca L.), catfish (Silurus glanis L.) and brook trout (Salmo trutta L.), which belong to different ecological groups of fish and different locomotor activity, diet and ways of obtaining food were studied. In the article were presents differences in the size of red blood cells, their density, nuclear-cytoplasmic ratio and the content of hemoglobin in the above-mentioned species. It was found that the hemoglobin content in the blood increases in the following sequence: catfish, tench, trout brook. Since the density of red blood cells, research subjects has no significant difference, the basic mechanisms that ensure the growth of hemoglobin, red blood cells reduce the size of the nuclei and an increase in their cytoplasm. Progressive can be considered a sign of an increase in the relative area of red blood cells due to their extension