Table 1.
Parameters from known SR systems and their predicted effects on competition
| Species | t | fa | fb | fc | πf | Freq. (♂) | Adj. | Proportion (α*θ=0.5/0.9) |
Host | Source |
|---|---|---|---|---|---|---|---|---|---|---|
| D. affinis | 0.98 | 1 | 0.3 | 0.59 | 0.53 | 0.10 | 1.05 | 0.52/0.61 | Sap flux** | Unckless (unpublished) |
| D. pseudoobscura* | 0.99 | 0.93 | 0.34 | 0.7 | 0.55 | 0.15 | 1.06 | 0.52/0.64 | Sap flux** | Curtsinger and Feldman 1980 |
| D. neotestacea | 0.99 | 1 | 0.12 | 0.8 | 0.59 | 0.21 | 1.11 | 0.59/0.73 | Fungus | James and Jaenike 1990 |
| D. recens | 0.98 | 1 | 0 | 0.57 | 0.51 | 0.05 | 1.03 | 0.51/0.56 | Fungus | Jaenike 1996 |
| D. quinaria | 0.98 | 1 | 0.44 | 0.54 | 0.51 | 0.05 | 1.03 | 0.51/0.56 | Fungus | Jaenike 1996 |
(Values in italics are inferred using the fertility model presented above,
*
fertility and viability costs are collapsed into fertility costs,
**
best guess, but not confirmed, Adj. is the adjustment to r due to the sex-ratio system)