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Image cytometric measurements of diploid, triploid and tetraploid fish erythrocytes in blood smears reflect the true dimensions of live cells

Authors

  • Martin Flajšhans,

    Corresponding author
    1. University of South Bohemia esk Budjovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, 389 25 Vodany, Czech Republic
      To whom correspondence should be addressed (email flajshans@vurh.jcu.cz).
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  • Martin Pšenička,

    1. University of South Bohemia esk Budjovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, 389 25 Vodany, Czech Republic
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  • Marek Rodina,

    1. University of South Bohemia esk Budjovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, 389 25 Vodany, Czech Republic
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  • Jakub Těšitel

    1. University of South Bohemia esk Budjovice, Faculty of Science, Department of Botany, Braniovsk 31, 370 05 esk Budjovice, Czech Republic
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To whom correspondence should be addressed (email flajshans@vurh.jcu.cz).

Abstract

Comparative image cytometry of erythrocytes of diploid and triploid tench Tinca tinca L. and evolutionary tetraploid sterlet Acipenser ruthenus L. was performed on whole live unstained cells, live cells with stained nuclei and on stained fixed whole cells and their nuclei to test if erythrocyte measurements made from blood smears reflect the true dimensions of live cells. Nuclear area and perimeter were the best ploidy level predictors distinguishing accurately among live and fixed diploid, triploid and tetraploid cells, without significant differences between live and fixed cells within a ploidy level. Redundancy analysis revealed insignificant marginal effect of fixation (explained 2.3% of variation, F=0.804), whereas the effect of ploidy level was highly significant (explained 50.6% of variation, F=34.874). The erythrocyte measurements of diploid, triploid and tetraploid fish erythrocytes and their nuclei made from blood smears reflect the true dimensions of live cells, and the fixation procedure did not substantially affect their predictive value for ploidy level determination.

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