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The haematology of gynogenic tench, Tinca tinca L., and of recessively homozygous colour tench strains
Author(s) -
Flajšhans M.,
Vajcová V.
Publication year - 2003
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1046/j.1439-0426.2003.00462.x
Subject(s) - biology , mean corpuscular volume , ploidy , strain (injury) , eosinophil , hematology , veterinary medicine , hematocrit , genetics , anatomy , immunology , endocrinology , gene , medicine , asthma
Summary Two wild‐coloured strains of tench (the first meiotic gynogenic generation MeiG 1 , and their control diploid half siblings) and three recessively homozygous colour strains (golden, blue and alampic) were examined for the determination of basic haematological indices. The MeiG 1 strain had higher erythrocyte counts than diploid controls or the blue and alampic strains (P < 0.001), and had a higher blood haemoglobin content than all three colour strains (P < 0.001). No differences were detected among strains for haematocrit, mean corpuscular haemoglobin, or mean corpuscular volume. Both the lowest leucocyte count (P < 0.001) and leucocrit value (P < 0.001) were found in the alampic tench, and may result from a negative pleiotropic effect of this recessive homozygous genotype (bbgg). In agreement with previous findings in tench, the differential leucocyte count revealed lymphocytes to be the dominating white blood cells; their rate was about 90% in both the wild‐coloured and blue strains, and less in the other two strains (83–84%). Neutrophil granulocytes were most abundant in the MeiG 1 strain. Eosinophil granulocytes were detected only in the golden strain, and were not common (0.2%).