Fitness consequences of spousal relatedness in 46 small-scale societies
Biology letters • Vol/Iss. 10(5) • The Royal Society • • Published In • Pages: 1-4 •
By Bailey, Drew H., Hill, Kim R., Walker, Robert S.
Hypothesis
There will be a stronger negative relationship between spousal relatedness and offspring fitness among foragers than among non-foragers. (2)
Note
Spousal relatedness was found to be positively associated with fitness outcomes among non-foragers, but negatively associated with fitness among foragers. However, when society-level inbreeding was introduced into the model, the effect was found to be accounted for by high society-level inbreeding, rather than a lack of foraging.
| Test Name | Support | Significance | Coefficient | Tail |
|---|---|---|---|---|
| Mixed-Effect Regression | Partially supported | p < 0.01 | UNKNOWN | UNKNOWN |
| Variable Name | Variable Type | OCM Term(s) |
|---|---|---|
| Inbreeding | Independent | Kinship Regulation Of Sex |
| Subsistence Activity | Independent | Diet |
| Spousal Relatedness | Independent | Kinship Regulation Of Sex |
| Number of Surviving Children | Dependent | Mortality |