TABLE 1.
The magnitude of inbreeding depression on adult life span of Callosobruchus maculatus and Stator limbatus
| δa
|
|||
|---|---|---|---|
| Trait | C. maculatus (Burkina Faso) | C. maculatus (South India) | S. limbatus |
| Replicate 1 | |||
| Females | 0.13 ± 0.03 | 0.11 ± 0.03 | 0.04 ± 0.01 |
| Males | 0.01 ± 0.03 | −0.01 ± 0.04 | 0.05 ± 0.01 |
| (N = 31) | (N = 41) | (N = 167) | |
| Replicate 2 | |||
| Females | 0.09 ± 0.01 | 0.10 ± 0.01 | |
| Males | −0.01 ± 0.01 | 0.02 ± 0.02 | |
| (N = 92) | (N = 90) | ||
N, the number of blocks where each block contains two inbred and two outbred families; see Figure 1.
a
δ = (meanoutbred – meaninbred)/meanoutbred (the proportional decrease in life span of inbreds relative to outbreds). δ is calculated separately for each block and then averaged across blocks. δ has an expectation of 0 when there is no inbreeding depression and can vary from positive to negative depending on whether inbreds have lower or higher life span than outbreds, respectively.