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. 2020 Apr 28;9(5):1087. doi: 10.3390/cells9051087

Table 1.

Morphometric data for embryos of all analyzed species.

Species Oocyte Diameter (µm) Chromosome Number (2n) Kin/V2cell × 10−4 (kin/µm3) Vnucleus (µm3) Spindle Length (µm) SAC Competence Reference
Chordates Xenopus laevis 1000 36 0.0014 3053 [33] 53.5 [34]
[5]
Danio rerio 800 50 0.0037
[6]
Ciona intestinalis 140 28 0.39
this study
Phallusia mammillata 130 16 0.29 1345 20–30
this study
Branchiostoma lanceolatum 130 38 [35] 0.66
this study
Echinoderms Hacelia attenuata 155 44 [36] 0.45 +
this study
Paracentrotus lividus 90 36 [37] 1.9 1562 18 [38] +
this study
Arbacia lixula 80 44 [36] 3.3 +
this study
Strongylocentrotus purpuratus 80 42 [39] 3.1 +
this study
Sphaerechinus granularis 110 42 [36] 1.2 +
this study
Mollusks Mytilus galloprovincialis 65 28 [40] Small = 6.6
Large = 2.5
2393 +
this study
Spisula solidissima 60 28 6.7 +
[11]
Arthropods Drosophila melanogaster 500 8 0.018 +
[41]
Nematodes Caenorhabditis elegans 50 12 AB = 22 [15]
P1 = 17 [15]
523 [42] 13 [43] +
[44]
Cnidarians Clytia hemisphaerica 210 30 0.12 30–35 +
this study