Table 2.
Natal dispersal distances (m) of individuals mating with related and unrelated partners (median+IQR). (The matched pair t-test uses square-rooted values of natal dispersal distances.)
| inbreeding class | d.f. | t | p | mean difference (95% CI) | dispersal distance of inbreeding individuals | matched dispersal distance of outbreeding individuals | n | distance between matched nest-boxes |
|---|---|---|---|---|---|---|---|---|
| f=0.25 | ||||||||
| type of close inbreeding | ||||||||
| only one of the two siblings (randomly selected) | 26 | 2.82 | 0.009 | 7.20 (1.94–12.45) | ♂: 377 (160–542) | ♂: 681 (381–1069) | 27 | ♂: 115 (44–181) |
| ♀: 349 (231–664) | ♀: 702 (379–1199) | 27 | ♀: 146 (71–193) | |||||
| parents | 7 | 1.65 | 0.144 | 9.29 (−4.06 to 22.64) | ♂: 553 (313–1812) | ♂: 449 (300–634) | 4 | ♂: 113 (91–129) |
| ♀: 671 (618–883) | ♀: 276 (150–470) | 4 | ♀: 224 (179–241) | |||||
| offspring | 15 | 6.14 | <0.001 | 22.63 (14.77–30.48) | ♂: 66 (9–107) | ♂: 834 (405–1696) | 12 | ♂: 102 (64–139) |
| ♀: 161 (0–338) | ♀: 682 (307–1685) | 4 | ♀: 91 (71–113) | |||||
| brothers | 26 | 1.83 | 0.079 | 4.60 (0.56–9.76) | 352 (172–570) | 608 (301–1049) | 27 | 121 (54–178) |
| sisters | 26 | 3.59 | 0.001 | 11.42 (4.88–17.96) | 377 (188–644) | 1002 (557–1712) | 27 | 129 (71–223) |
| f=0.125 | 24 | 5.37 | <0.001 | 14.65 (9.02–20.27) | ♂: 250 (142–413) | ♂: 562 (421–1980) | 12 | ♂: 109 (73–137) |
| ♀: 365 (192–773) | ♀: 1466 (627–1912) | 13 | ♀: 130 (75–151) | |||||
| f=0.0625 | 44 | 2.33 | 0.024 | 4.56 (0.63–8.57) | ♂: 430 (303–641) | ♂: 701 (266–956) | 22 | ♂: 72 (53–117) |
| ♀: 561 (297–765) | ♀: 776 (382–1345) | 23 | ♀: 109 (67–130) | |||||
| f=0.03125 | 28 | 2.31 | 0.029 | 5.35 (0.60–10.11) | ♂: 245 (207–745) | ♂: 509 (353–785) | 14 | ♂: 83 (63–150) |
| ♀: 517 (268–1471) | ♀: 1183 (918–1590) | 15 | ♀: 95 (79–149) | |||||
| f=0.0002 | 553 | 0.08 | 0.937 | 0.05 (−1.24 to 1.14) | ♂: 514 (312–980) | ♂: 540 (308–940) | 293 | ♂: 97 (69–139) |
| ♀: 742 (396–1398) | ♀: 829 (412–1378) | 271 | ♀: 99 (68–156) | |||||