Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Hematological parameters in Nile Tilápia, Oreochromis niloticus exposed to sub-letal concentrations of mercury

Full text
Author(s):
Nilton Massuo Ishikawa [1] ; Maria José Tavares Ranzani-Paiva [2] ; Julio Vicente Lombardi [3] ; Cláudia Maris Ferreira [4]
Total Authors: 4
Affiliation:
[1] UNESP. Centro de Aqüicultura
[2] Instituto de Pesca SAA-APTA. Instituto de Pesca SAA-APTA - Brasil
[3] Instituto de Pesca SAA-APTA. Instituto de Pesca SAA-APTA - Brasil
[4] Instituto de Pesca SAA-APTA. Instituto de Pesca SAA-APTA - Brasil
Total Affiliations: 4
Document type: Journal article
Source: Brazilian Archives of Biology and Technology; v. 50, n. 4, p. 619-626, 2007-07-00.
Abstract

Mercury toxicity in tilapia, Oreochromis niloticus, (Linnaeus, 1758) was investigated by the hematological parameters after long-term (14 days) exposure to various Hg concentrations (0.02, 0.002, 0.0002mg/L Hg). Test groups were set up with three replicates for each concentration, plus the control group. Blood samples were collected from six individuals for each concentration at 0, 3, 7, 10 and 14 days of exposure. The hematological parameters analyzed were: total red blood cell count (RBC), hemoglobin concentration (Hb), hematocrit (Ht), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC), total white blood cell count (WBC) and differential leukocyte counts and total thrombocyte count (Tr). There were no significant differences among the mean hematological values at the different Hg concentrations indicating that Hg at the concentrations studied was not toxic to tilapia. (AU)