Table 1.
Occurrence of fusion in all species, by hemisphere.
| Taxon and species | Total n of individuals | Fusions in available left hemispheres | Fusions in available right hemispheres | Proportion bilateral when available |
|---|---|---|---|---|
| Apes | ||||
| Gorilla beringei beringei* | 21 | 7/15 (47%) | 12/21 (57%) | 6/15 (40%) |
| Gorilla beringei graueri* | 4 | 3/4 (75%) | 3/4 (75%) | 2/4 (50%) |
| Gorilla gorilla gorilla* | 17 | 8/16 (50%) | 6/17 (35%) | 5/16 (31%) |
| Homo sapiens* | 103 | 0/103 | 0/103 | 0/103 |
| Hylobates lar | 2 | 0/2 | 1/2 (50%) | 0/2 |
| Hylobates muelleri | 1 | 0/1 | NA | NA |
| Nomascus leucogenys* | 1 | 0/1 | 0/1 | 0/1 |
| Pan paniscus* | 14 | 4/13 (31%) | 7/14 (50%) | 4/13 (31%) |
| Pan troglodytes* | 102 | 3/103 (3%) | 3/102 (3%) | 1/102 (1%) |
| Pongo pygmaeus* | 20 | 4/20 (20%) | 3/18 (17%) | 2/18 (11%) |
| Symphalangus syndactylus | 1 | 0/1 | NA | NA |
| Old World monkeys | ||||
| Cercocebus agilis | 1 | 0/1 | NA | NA |
| Cercopithecus mitis | 1 | 0/1 | 0/1 | 0/1 |
| Chlorocebus aethiops | 3 | 0/3 | 0/3 | 0/3 |
| Colobus angolensis | 1 | 0/1 | NA | NA |
| Colobus guereza | 1 | 0/1 | 0/1 | 0/1 |
| Macaca fascicularis | 3 | 0/3 | 0/3 | 0/3 |
| Macaca maura | 6 | 0/6 | NA | NA |
| Macaca mulatta* | 12 | 2/12 (16%) | 2/10 (20%) | 1/10 (10%) |
| Macaca nemestrina | 7 | 1/6 (17%) | 0/1 | 0/1 |
| Mandrillus sphinx | 1 | 0/1 | 0/1 | 0/1 |
| Miopithecus talapoin | 1 | 0/1 | 0/1 | 0/1 |
| Papio anubis | 7 | 0/7 | 0/1 | 0/1 |
| Procolobus badius | 1 | 0/1 | 0/1 | 0/1 |
| Semnopithecus entellus | 1 | 0/1 | 0/1 | 0/1 |
| Trachypithecus francoisi | 2 | 0/2 | NA | NA |
| New World monkeys | ||||
| Alouatta caraya | 2 | 0/2 | NA | NA |
| Alouatta palliata | 1 | 0/1 | 0/1 | 0/1 |
| Alouatta seniculus | 1 | 1/1 (100%) | 0/1 | 0/1 |
| Aotus trivirgatus | 3 | 0/1 | 1/1 (100%) | 0/1 |
| Ateles belzebuth | 1 | 0/1 | NA | NA |
| Callicebus moloch | 1 | 0/1 | 1/1 (100%) | 0/1 |
| Callithrix jacchus | 2 | 0/2 | NA | NA |
| Callithrix pygmaea | 2 | 0/2 | 0/2 | 0/2 |
| Cebus albifrons | 1 | 0/1 | 0/1 | 0/1 |
| Cebus apella* | 15 | 0/15 | 0/14 | 0/14 |
| Leontopithecus rosalia | 1 | 0/1 | NA | NA |
| Pithecia pithecia | 1 | 0/2 | NA | NA |
| Saguinus geoffroyi | 2 | 0/2 | 0/1 | 0/1 |
| Saguinus midas | 1 | 0/1 | 0/1 | 0/1 |
| Saguinus oedipus | 5 | 2/5 (40%) | 0/2 | 0/2 |
| Saimiri boliviensis | 1 | 0/1 | NA | NA |
| Saimiri sciureus* | 6 | 0/6 | 0/5 | 0/5 |
| Strepsirrhines | ||||
| Avahi laniger | 1 | 0/1 | 1/1 (100%) | 0/1 |
| Cheirogaleus medius | 2 | 0/2 | NA | NA |
| Eulemur flavifrons | 1 | 0/1 | 0/1 | 0/1 |
| Eulemur mongoz | 1 | 1/1 (100%) | 0/1 | 0/1 |
| Galagoides demidovii | 1 | 1/1 (100%) | 1/1 (100%) | 1/1 (100%) |
| Indri indri | 1 | 1/1 (100%) | 1/1 (100%) | 1/1 (100%) |
| Lemur catta | 3 | 1/2 (50%) | 1/1 (100%) | NA |
| Loris tardigradus | 4 | 1/4 (25%) | 1/1 (100%) | 1/1 (100%) |
| Microcebus murinus | 1 | 1/1 (100%) | NA | NA |
| Nycticebus coucang | 4 | 0/4 | 0/1 | 0/1 |
| Otolemur crassicaudatus | 1 | 1/1 (100%) | 1/1 (100%) | 1/1 (100%) |
| Perodicticus potto | 2 | 0/2 | 0/1 | 0/1 |
| Varecia variegata | 1 | 1/1 (100%) | 1/1 (100%) | 1/1 (100%) |
*
Sample includes MRI data.