Abstract
In February 1994 and in March 1995 one hundred and forty-four four specimens of teleosts were analyzed. They belonged to the 20 most representative species from the Parana River basin, state of Parana and Mato Grosso do Sul, Brazil. Blood samples were collected from caudal peduncle to determine the number of erythrocytes (Er), hematocrit (Ht), hemoglobin rate (Hb) and differential percentage of leukocytes. Total hematometric indexes (mean corpuscle volume, mean corpuscle hemoglobin and mean corpuscular hemoglobin concentration) were estimated. Hematological parameters related to sex and gonadal maturation stages were undertaken for Prochilodus lineatus and Schizodon borellii . In these species significant differences between the gonadal maturation stages, with lowest values in the resting stage were found. Lymphocytes, monocytes, neutrophils, basophils, eosinophils, special granulocytic cells and immature cells were registered in the leukocyte differential count. As a general rule, neutrophil, followed by lymphocytes, was the most frequent cell recorded in the peripheral blood of most species. High percentage of eosinophils in the peripheral blood of some Siluriforms was observed.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
