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Table 2 Analysis of variance of the net activity of females with conspecific males for 5 responses: time, visits, affiliation, mating attempts, and aggression ( italic P ≤ 0.10, bold P ≤ 0.05)

From: Experimental evidence for asymmetric mate preference and aggression: behavioral interactions in a woodrat (Neotoma) hybrid zone

   Female net activity with conspecific males
   Time Visits Affiliation Mating attempts Aggression
Fixed effect dfa F P F P F P F P F P
Female species* 1,61 0.1 0.709 6.1 0.017 0.3 0.587 7.3 0.009 30.3 <0.001
Female region* 1,61 4.3 0.042 0.5 0.489 0.0 0.840 1.2 0.270 0.1 0.818
Species x region* 1,61 3.2 0.077 0.1 0.838 0.2 0.688 4.4 0.041 3.8 0.055
Male rel. massb 1,Xc 0.1 0.785 1.1 0.300 0.9 0.352 0.9 0.345 1.2 0.275
Trial number 1,51d 0.6 0.450 0.0 0.859 . . 0.1 0.744 . .
  1. Net activity was the response with the conspecific male minus that with the heterospecific male. Relative mass was the mass of the conspecific minus the heterospecific male. For time, visits, and mating attempts, female identity was included as a random effect (repeated measures analysis), which was not necessary for the female-averaged responses of affiliation and aggression. For all 5 responses, the reduced models (including only species, region, and their interaction) produced a better fit than the full models based on AICc, hence their F and P are shown (*).
  2. aFor df, both the numerator and denominator degrees of freedom are given for each effect.
  3. bFor affiliation and aggression, the average relative mass for the 2 sets of males tested with each female.
  4. cThe denominator degrees of freedom varied based on model structure and missing values. The values by response (left to right) were 51, 50, 60 (no repeated measures), 51, and 60 (no repeated measures), respectively.
  5. dFor visits, the denominator degrees of freedom were 50.
  6. For emphasis, 0.05 ≤ P ≤ 0.10 are noted in italics and P ≤ 0.05 in bold type.