Vision-independent odometry in the ant Cataglyphis cursor.
In contrast to flying insects, in which distance estimation is visually mediated, self-induced image motion and use of familiar landmarks are known to play a minor role in ants. Here we show that strictly diurnal Cataglyphis cursor ants can gauge with accuracy the distance they have travelled even in complete darkness in the absence of any other cues, i.e. chemical or protocounting information. Thus, an ant's odometer is a vision-independent system based on proprioceptive cues, implicating some form of step counting, which remain to be elucidated.
Thiélin-Bescond
Mary
M
Centre de Recherches sur la Cognition Animale, UMR-CNRS 5169, Université Paul-Sabatier, 31062 Toulouse Cedex 4, France.
Beugnon
Guy
G
D000818:Animals; D001000:Ants / Q000502:physiology*; D003624:Darkness; D008027:Light; D011434:Proprioception; D012903:Smell / Q000502:physiology*; D014785:Vision, Ocular / Q000502:physiology*