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Table 2 Average genetic variance and average effective population sizes (based on individual increases in inbreeding, N e , and increases in coancestry, N ec ) in the last generation before and after selection of the best 20 % of individuals for six scenarios and a heritability of 0.25

From: Response to selection while maximizing genetic variance in small populations

Scenario

A

B

C

D

E

F

Before selection

Genetic variance

0.60 ± 0.00

1.96 ± 0.00

1.92 ± 0.00

1.24 ± 0.01

1.22 ± 0.01

0.76 ± 0.00

N e

100.33 ± 1.27

2.61 ± 0.00

3.19 ± 0.13

24.29 ± 20.82

50.00 ± 0.00

193.15 ± 2.30

N ec

100.49 ± 0.88

258.60 ± 0.00

122.28 ± 3.86

111.76 ± 13.72

187.79 ± 1.85

194.26 ± 0.18

After selection

Genetic variance

0.44 ± 0.01

0.67 ± 0.04

0.63 ± 0.05

0.50 ± 0.09

0.50 ± 0.08

0.56 ± 0.02

N e

71.46 ± 3.03

159.82 ± 28.68

140.21 ± 26.26

91.30 ± 21.58

89.07 ± 20.98

105.83 ± 5.26

N ec

70.12 ± 2.69

151.33 ± 23.85

133.66 ± 24.43

88.62 ± 20.11

86.20 ± 19.24

102.66 ± 5.00

  1. A random scenario, B full-sib scenario, C maximum variance total scenario, D maximum variance total limiting the increase in average inbreeding scenario, E maximum variance total limiting the average individual increase in inbreeding scenario, F minimum coancestry scenario