Skip to main content

Advertisement

Table 2 Influence of familiarity and experience treatments on dominants’ strategies in Contest 2

From: Opponent familiarity and contest experience jointly influence contest decisions in Kryptolebias marmoratus

   Attacking directly
vs.
Behaving less aggressive
(N= 240)
Effect df b ±SE χ 2 P
Familiarity (UF vs. F) 1 0.09±0.54 0.03 0.871
Experience 2   3.52 0.172
 SW-DN vs. SN-DN 1 0.24±0.56 0.20 0.657
 SN-DL vs. SN-DN 1 −1.08±0.71 2.36 0.125
Familiarity × experience 2   8.02 0.018*
 UF:  SW-DN vs. SN-DN 1 −0.19±0.74 0.06 0.800
     SN-DL vs. SN-DN 1 −3.11±1.21 6.65 0.010*
 F:     SW-DN vs. SN-DN 1 0.68±0.81 0.71 0.400
         SN-DL vs. SN-DN 1 0.95±0.76 1.56 0.212
Subordinate’s aggressive behavior 2   16.11 <0.001*
Size 1 0.28±0.09 9.09 0.003*
Lineage 4   11.86 0.018*
  1. Generalized linear model evaluating the influence of familiarity (F: familiar; UF: unfamiliar) and experience (SW-DN, SN-DL and SN-DN) treatments as well as the interaction between them on the tendency of the dominants to launch attacks directly (Level 4 vs. Levels 1 to 3) in Contest 2. The pair’s body size and lineage and the most aggressive behavior the subordinate exhibited (none, displaying or attacking) were included in the model to account for their influences. Contrast analyses were used to evaluate the differences between the effects of different levels of a treatment. Because the interaction between familiarity and experience treatments was significant, contrast analyses were also conducted to evaluate the effect of experience treatments in unfamiliar and familiar opponent treatment separately. (χ2: Ward χ2; *: P < 0.05).