Table 1 Comparative analysis of different monolayers. The lines are ordered according to the relative topological defectiveness of monolayers (see the last column). The value in triangular brackets is the average over all the studied samples.

From: Crystal-like order and defects in metazoan epithelia with spherical geometry

Species

Average size of eggs, μm

N range (Number of cells)

Number of investigated monolayers

<N>

<Q->

Q- range

<Q->/ <N>

Ciona intestinalis

217.6

60–132

21

94

3.9

0–12.8

0.04

Styela clava

193.9

269–688

14

441

26.4

6.5–54.5

0.06

Ascidia Mentula

236.1

411–931

11

615

51.5

31.5–73.4

0.084

Ascidiella aspersa

227.7

112–455

36

222.7

25

8.5–55.4

0.11

Molgula citrina

154.2

52–300

25

179.8

21

0–53

0.117

Molgula sp.

236.7

411–1467

7

947

131.5

74.2–237.8

0.139

Phallusia mammillata

201.9

181–547

18

353

58.4

14.3–97.1

0.165

Styela plicata

183

189–616

8

404

73.3

35.7–159.5

0.18

  1. In particular, <N> and <Q-> are the average number of cells and the average topological defectiveness for the considered species, respectively.