Figure 2
From: Wild genius - domestic fool? Spatial learning abilities of wild and domestic guinea pigs
Learning performance in the Morris water maze task. DM = male domestic guinea pigs (n = 15), DF = female domestic guinea pigs (n = 13), WM = male wild cavies (n = 13), WF = female wild cavies (n = 13). A) Learning curve analyzed by path length. The two trials of the first day are depicted separately. Data for day two to day five are combined values of two trials per day. In the probe trial (pt) the platform was removed. Two retention trials (r1 and r2) were conducted on the same day with the platform being moved to the opposite quadrant of the pool. Data represent means and SEMs. B) Comparison of the groups by analysis of the areas under the learning curves (AUC) of the parameter 'path length' calculated for the acquisition phase (trial one, day one to trial ten, day 5). Data represent means + SEM. ANOVA revealed a significant effect of domestication (F1, 47 = 9.32, p < 0.01). Statistical symbols of post hoc analysis are depicted in the figure. * = p < 0.05, t = p < 0.1. C) Learning curve analyzed by latency to find the platform. D) Comparison of the groups by analysis of the areas under the learning curves (AUC) of the parameter 'latency' calculated for the acquisition phase (trial one, day one to trial ten, day 5). ANOVA revealed effects of domestication as a statistical trend (F1, 47 = 3.02, p = 0.09).