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Differential leucokocyte counts in ''dourado'', Salminus maxillosus Valenciennes, 1840, from the Mogi-Guaçu River, Pirassununga, SP

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Author(s): Ranzani-Paiva M. J. T. | Rodrigues E. L. | Veiga M. L. | Eiras A. C. | Campos B. E. S.

Journal: Brazilian Journal of Biology
ISSN 1519-6984

Volume: 63;
Issue: 3;
Start page: 517;
Date: 2003;
Original page

Keywords: dourado | Salminus maxillosus | leukocytes | hematology

ABSTRACT
From August, 1996 to December, 1997, 293 of ''dourado'' specimens, Salminus maxillosus (Valencienes, 1840), of various sizes, were caught in Mogi-Guaçu River, Emas Falls, for hematologic studies. Total weight (Wt in g) and length (Lt in cm) were taken for each individual animal. Smears were prepared from blood samples and utilized for differential leukocyte counts (lymphocytes, neutrophils, monocytes, eosinophils, special granulocytic cell and immature cells). The mean percentages of leukocytes were determined according to sex and stage of gonadal maturation (immature, in maturation, mature, spent and resting). Significant differences between male and female occurred only for the special granulocytic cell. In analyzing the leukocyte profile during gonadal development, only female showed significant differences in mean percentages of lymphocytes, neutrophils, monocytes and eosinophils.
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