Neotropical Ichthyology ()

Hematological and morphometric blood value of four cultured species of economically important tropical foodfish

  • Genoefa Amália Dal'Bó,
  • Fernanda Garcia Sampaio,
  • Marcos Eliseu Losekann,
  • Julio Ferraz de Queiroz,
  • Alfredo José Barreto Luiz,
  • Verena Hildegard Gyárfas Wolf,
  • Vitória Teodoro Gonçalves,
  • Maria Lidia Carra

DOI
https://doi.org/10.1590/1982-0224-20140115
Journal volume & issue
Vol. 13, no. 2
pp. 439 – 446

Abstract

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The use and validation of fish health monitoring tools have become increasingly evident due to aquaculture expansion. This study investigated the hematology and blood morphometrics of Piaractus mesopotamicus, Brycon orbignyanus, Oreochromis niloticus and Rhamdia quelen. The fish were kept for 30 days in 300-liter aquariums, after which they were anesthetized with benzocaine and blood was collected from caudal vessels. In comparison to other species, B. orbignyanus presented the highest hematocrit (Ht), RBC averages and Mean Corpuscular Volume (MCV) with a particular range of data. B. orbignyanus presented lower Ht, Hb, RBC averages and values, and Mean Corpuscular Hemoglobin Concentration (MCHC). Oreochromis niloticus presented lower Ht, Hb, RBC averages and values, and Mean Corpuscular Hemoglobin Concentration (MCHC). Rhamdia quelen and O. niloticus presented higher variation of White Blood Cells (WBC), neutrophils (Nf), lymphocytes (Lf), monocytes (Mf) and thrombocytes (Trb). Data of large axes (LA), minor axes (MA), surface (SF) and volume (VL) are in the same variance range. This study has demonstrated that hematological variances can occur between animals of different species as well as of the same species.

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