Haematological parameters in Umbrina cirrosa (Teleostei, Sciaenidae): a comparison between diploid and triploid specimens

Haematological features were compared between diploid and triploid specimens of the ray-finned fish Umbrina cirrosa. No significant differences between diploids and triploids were reported in haematocrit and total haemoglobin concentration, but erythrocytes and thrombocytes were significantly greate...

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Bibliographic Details
Published in:Comparative biochemistry and physiology. Part A, Molecular & integrative physiology Molecular & integrative physiology, 2004-05, Vol.138 (1), p.45-51
Main Authors: Ballarin, Loriano, Dall'Oro, Manuela, Bertotto, Daniela, Libertini, Angelo, Francescon, Antonia, Barbaro, Alvise
Format: Article
Language:English
Subjects:
Animals
Bacillus clausii
Blood cells
Blood Glucose - analysis
Blood Platelets - cytology
Blood Platelets - physiology
Cell Size
Enzymology
Erythrocyte Volume
Erythrocytes - cytology
Erythrocytes - physiology
Female
Haematology
Hematocrit
Hemoglobins - analysis
Leukocytes
Male
Osmosis
Perciformes - blood
Perciformes - genetics
Ploidies
Sciaenidae
Shi drum
Teleostei
Triploidy
Umbrina cirrosa
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Summary:Haematological features were compared between diploid and triploid specimens of the ray-finned fish Umbrina cirrosa. No significant differences between diploids and triploids were reported in haematocrit and total haemoglobin concentration, but erythrocytes and thrombocytes were significantly greater in size in triploids. Glycaemia was significantly lower in diploids, whereas triploid erythrocytes were more resistant to osmotic stress. In triploids, a greater fraction of leukocytes was positive for alkaline phosphatase activity, when stimulated with Bacillus clausii spores, otherwise no significant increase of oxygen consumption was observed in triploid leukocytes after stimulation, based on assays for superoxide anions. Triploids were characterized by a lower concentration of circulating blood cells with a lower surface/volume ratio when compared with diploids. These features may lead to a general disadvantage of triploids in withstanding stress conditions: a situation that needs to be taken into account in aquaculture practice.
ISSN:1095-6433
1531-4332
DOI:10.1016/j.cbpb.2004.02.019