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Table 1 Statistical comparison of reproductive success (RS) between unrelated (n = 15) and related (n = 11) breeding pairs

From: Ultrasonic vocalizations in house mice depend upon genetic relatedness of mating partners and correlate with subsequent reproductive success

 RS within entire breeding periodRS within 70 days
Mann-Whitney U testZp-valueZp-value
VariableComparison
Latency to first litterUnrelated vs. Related−1.8320.067−1.9130.056
Number of litters−2.3810.017−2.0960.036
t-testtp-valuetp-value
VariableComparison
Number of offspringUnrelated vs. Related2.2150.0361.7830.087
N. offspring in first litter1.3560.1881.3560.188
N. offspring/litter1.3440.1911.2640.218
GZLMWald-Chi-Squarep-valueWald-Chi-Squarep-value
VariableEffect
Log (Latency to first litter)Relatedness5.1350.0236.2010.013
Receptivity5.5300.0196.7440.009
Relatedness*Receptivity24.391< 0.00129.298< 0.001
  1. Results are shown for data including offspring delivered during the entire breeding period (85 ± 15d) and when using only offspring delivered within 70d. The second dataset represents equal breeding opportunities for all pairs. Results showing p < 0.05 are reported in bold