Table 1 Fitness parameters depending on sex and genotype.

From: Balancing selection via life-history trade-offs maintains an inversion polymorphism in a seaweed fly

Sex

Fitness component

αα

αβ

ββ

Male

Egg-to-adult

relative

survival

Sαα-m

0.81

1−sm

Sαβ-m

1.0

1−sm.Hs

Sββ-m

0.88

1

Relative

reproductive

success

Tαα-m

1.0

1

Tαβ-m

(0.55)

1−tm.Ht

Tββ-m

(0.1)

1−tm

Female

Egg-to-adult

relative

survival

Sαα-f

0.71

1−sf

Sαβ-f

0.90

1−sf.Hs

Sββ-f

1.0

1

Relative

reproductive

success

Tαα-f

1.0

1

Tαβ-f

0.97

1−tf.Ht

Tββ-f

0.87

1−tf

  1. Within each cell, the first line is the parameter name as defined in the “Methods” section, the second line is the numeric values inferred from the experiment and used by default in most simulations exploring a realistic set of parameters, the third line is a conceptualization of the parameter based on Zajitschek and Connallon19 used for the simulations exploring a theoretical space of parameters, with sm, sf being the coefficients of selection for survival in males and females, and tm and tf being the coefficients of selection for reproduction in males and females. Hs is the coefficient of dominance for survival and Ht is the coefficient of dominance for reproduction.