Fig. 17–22 in New Paramecium (Ciliophora, Oligohymenophorea) congeners shape our view on its biodiversity

Fig. 17–22 Nuclear reorganization in P. boetschlii sp. nov. during conjugation. 17 Early micronuclear migration. 18 Prophase of the first meiotic division of the micronucleus. 19 The third synkaryon division in exconjugant. Four spindles of synkaryon derivates are marked by wedgetailed arrows; three of the four products indicated by large arrows (micronuclear anlagen) and by arrowheads (macronuclear anlagen). 20–21 Exconjugant cell with eight products of synkaryon division and fragments of the old macronucleus (bold arrow) under different magnification. 22 Exconjugant cell with more developed macronuclear anlagen. Bars 15 μm (17), 10 μm (18, 19), 30 μm (20), 15 μm (21, 22)