Table 1.
Experimental crosses with genetic distance, divergence time and sample sizes.
Fig 1.
Average inviability of homospecific, F1 and F2 hybrid crosses.
Five different measures of post-mating failure rates (in %) in homospecific, F1 and F2 interspecific hybrid crosses. Bars show inviability averaged across replicated F2 families of the same cross type, and then across the different cross types within homospecifics, F1 hybrids and F2 hybrids. Error bars are standard deviations. Numbers under bars represent the number of families entering analysis. Significant pairwise posthoc comparisons (after Bonferroni correction) are indicated by brackets with asterisks.
Table 2.
Results (two-tailed p-values) of Student’s t-tests comparing five components of fitness between homospecific, non-hybrid crosses, F1 hybrid crosses, and F2 hybrid crosses.
Fig 2.
F2 hybrid inviability as a function of genetic distance.
Accumulation of fertilization, hatching, 14-day survival, 180-day survival and cumulative failure rates as a function of genetic distance (uncorrected p-distances calculated from D-loop sequences) in F2 hybrids. Error bars are standard deviations. Regression lines indicate significant relationships.