Hematological parameters in tenchTinca tinca after short term exposure to lead

Abstract

Alterations in the hematological parameters of Tinca tinca were studied after exposure to lead at different concentrations and durations of exposure. Dose of 75/24 (ppm/h) did not cause significant change in any blood parameter. The 300/48 dose caused a significant increase in hematocrit (Hct), mean corpuscular volume (MCV) and mean corpuscular hemoglobin (MCH) and a significant decrease in red blood cell (RBC) count and mean corpuscular hemoglobin concentration (MCHC). The 30/24 dose caused a significant increase in Hct and RBC count only. The 30/96 dose caused a significant increase in Hct and a significant decrease in MCHC only. The 30/504 dose caused a significant decrease in RBC count and a significant increase in MCV and MCH. The 75/96 dose caused a significant increase in Hct and a significant decrease in MCH and MCHC. The 75/504 dose caused a significant decrease in Hct, hemoglobin (Hb) and RBC count, and a significant increase in MCV and MCH. These alterations were attributed to direct or feedback responses of structural damage to RBC membranes resulting in hemolysis and impairment in hemoglobin synthesis, stress related release of RBCs from the spleen and hypoxia, induced by exposure to lead.

Effects of Varying Levels of Dried Poultry Droppings on Haematology, Microbial Properties and Nutrient Utilization of Clarias gariepinus

“…In the present study, the significant increase in WBC count indicate hypersensitivity of these cells to dried poultry droppings and the changes may be due to immunological reaction to produce more antibodies to combat the stress induced through exposure to the dried poultry wastes. The significant increase (p<0.05) observed for MCV and MCH in test fish T5 compared to the control may be attributed to direct or feedback responses of structural damage to red blood cell membranes resulting in haemolysis and impairment in haemoglobin synthesis and stress-related release of red blood cells from the spleen and hypoxia, induced by exposure to toxicant (Shah, 2006).…”

Hematological analysis of Micropogonias Furnieri, Desmarest, 1823, Scianidae, from two estuaries of Baixada Santista, São paulo Brazil

“…Fish exposed to metals, pesticides and effluents exhibit hematological changes, not only after laboratory exposure, but also when the exposure occurs in the field (RANZANI-PAIVA et al, 1997;OLIVEIRA-RIBEIRO et al, 2006;ADHIKARI, 2004;SHAH, 2006;FRANÇA et al, 2007). Other authors reported that such responses may vary according to the gender, as observed for Salminus maxilosus (RANZANI-PAIVA et al, 2003).…”

“…An alternative hypothesis, in which the erythrocytes have suffered haemolysis (SHAH, 2006, ADHIKARI et al, 2004, FRANÇA et al, 2007, can be discarded, since the SES fish exhibited high levels of MCHC and Hb. Only the reduction of Er does not necessarily indicate hemolysis because, in this case, there is also a reduction of Hb by leaching, reducing its erythrocyte concentration (MCHC).…”

“…The analysis of fish blood is an easy approach which provides information on the physiological conditions of animals exposed to contaminants, and may be used to evaluate the responses of fish exposed to pollutants (OLIVEIRA-RIBEIRO et al, 2000;ADHIKARI et al, 2004;SHAH, 2006;FRANÇA et al, 2007). However, the literature on the hematology of marine and estuarine species is still scarce.…”

Haematological Changes in African Catfish (Clarias Gariepinus)Exposed to Mixture of Atrazine and Metolachlor in the Laboratory

“…The increase in MCV, MCH and MCHC is in agreement with the work of Ariweriokuma et al (2011) following a shoot term exposure of C. gariepinus to cypermethrin in the laboratory. These alterations were attributed to direct or feedback response of structural impairment to RBC membranes resulting in haemolysis and impairment in haemoglobin producyion, stress-related release of RBCS from the spleen and hypoxia stimulated by exposure to atrazine and metolachlor (Shah, 2006;Akinrotimi and Gabriel, 2012b).…”