Hematological parameters and phagocytic activity in fat snook (Centropomus parallelus) bred in captivity

Hematological parameters and phagocytic activity in fat snook (Centropomus parallelus) bred in captivity

Author Santos, Antenor Aguiar Google Scholar
Ranzani-Paiva, Maria Jose T. Google Scholar
Veiga, Marcelo Leite da Google Scholar
Faustino, Lucas Google Scholar
Egami, Mizue Imoto Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Adventist Univ
Fishery Inst
Universidade Federal de Sergipe (UFS)
Universidade de São Paulo (USP)
Abstract The objective of this work was to determine the hematological parameters and the phagocytic capacity of peritoneal macrophages of fat snook related to sex, stage of gonadal maturation and seasonal cycle. Blood was collected from 135 animals (78 females and 57 males) and used for determinations of: erythrocyte number, hematocrit, hemoglobin, erythrocyte indices mean corpuscular volume (MCV) and mean corpuscular hemoglobin concentration (MCHC), total and differential leukocyte counts, and thrombocyte count. the phagocytic capacity and phagocytic index were determined after Saccharomyces cerevisiae inoculation in the peritoneal cavity of the animals. the hematological results according to sex showed that the erythrocyte, total leukocyte and thrombocyte counts were statistically higher in males than females, with the latter showing a higher MCV. Concerning to erythrocyte count, hematocrit and hemoglobin concentration analyzed separately by sex and stage of gonadal maturation, males were found to have significantly elevated values in the mature stage and decreased levels in the resting stage. the results of the erythrocyte and leukocyte series, thrombocytes and phagocytic activity related to seasonal cycle showed significant differences in both sexes, where hematocrit and hemoglobin concentration were lower in winter and higher in the other seasons, mean corpuscular volume was higher in the summer and lower in the winter and fall, total leukocytes and thrombocytes lower in the spring and higher in the fall, lymphocytes low in the winter and summer and high in the spring and phagocytic capacity and phagocytic index high in the summer and low in the winter and fall. the results showed that the hematological values in males are statistically higher than those in females, the erythrocyte values in males increase with the progression of gonadal maturation and that winter is the season of the year least favorable for hematological and phagocytic responses for survival of fat snook kept in captivity. the parameters studied could be utilized in the evaluation of the health status of this species in captivity. (C) 2012 Elsevier B.V. All rights reserved.
Keywords Hematology
Phagocytosis
Season
Sex
Centropomus parallelus
Language English
Sponsor Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Date 2012-10-01
Published in Fish & Shellfish Immunology. London: Academic Press Ltd- Elsevier B.V., v. 33, n. 4, p. 953-961, 2012.
ISSN 1050-4648 (Sherpa/Romeo, impact factor)
Publisher Elsevier B.V.
Extent 953-961
Origin http://dx.doi.org/10.1016/j.fsi.2012.08.005
Access rights Closed access
Type Article
Web of Science ID WOS:000310185800032
URI http://repositorio.unifesp.br/handle/11600/35368

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