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Table 6 Best-fitting models describing the relationship between male competitive ability and fertilization success (sperm traits)

From: Competitive males have higher quality sperm in a monogamous social bee

Selection episode

Response

Predictor

Parameter estimate

SE

P-value

Persistence time in the aggregation

Sperm viability

Days at aggregation

3 days

0.26

0.18

0.15

 

5 days

−0.24

0.18

0.18

Sperm length

Days at aggregation

3 days

−3.36

0.98

<0.01

 

5 days

−3.02

0.99

<0.01

Sperm length variation

Days at aggregation

3 days

0.03

0.08

<0.001

 

5 days

0.03

0.08

<0.01

  1. For each predictor, parameter estimates, standard errors and p-values are given