HAEMATOLOGY OF FROM TIBAGI RIVER. I. DIFFERENTIAL WHITE BLOOD CELL COUNTS IN Pimelodus maculatus FEMALES

Authors

  • Ângela Teresa SILVA-SOUSA Professora Doutora - Departamento de Biologia Animal e Vegetal -  UEL - Londrina -  PR
  • Patrícia Miyuki MACHADO Pós-graduanda -  Doutorado em Ciências Ambientais - UEM - Maringá - PR
  • Sílvia Caroline de ALMEIDA Mestre em Ciências Ambientais

Keywords:

leucocytes, differential count, gonadal maturation, water temperature, Pimelodus maculatus

Abstract

The white blood cell picture of sixty-eight females of the "mandi-amarelo", Pimelodus maculatus Lacépí­¨de, 1803, from the Tibagi River, at Sertanópolis, Paraná State, Brazil, was analyzed in relation to both the gonadal maturation and the water temperature at the times of specimen capture in each month. All classic leucocyte forms were found, i.e. Iymphocytes, neutrophils, monocytes, basophils, eosinophils, special granulocytic cells and immature leucocytes. The lymphocytes were the most frequent leucocyte followed by the neutrophils. The other white cell types were scarce. A tendency to the lymphocytophilia and a significant neutropenia (P<0.05) were observed in the gonadal maturation. A different pattern was found when the mean percentages of the most abundant leucocytes were analyzed monthly. A marked lymphocytopenia and neutrophilia were found during the highest water temperature period.

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Published

2018-10-27

Issue

Vol. 26 No. 1 (2000): BOLETIM DO INSTITUTO DE PESCA

Section

Scientific Article