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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