Figure 2
From: Circadian rhythm and surface activity in soil-dwelling caecilians (Amphibia: Gymnophiona)
General surface-activity pattern of three caecilian species. (a) Mean activity of individuals of each species displayed in 30 min bins under LD, DD and DL cycles are plotted against time in 24 h. Values are shown as mean ± SE. (b–d) Circular histogram (rose plot) of the surface activity of (b) Gegeneophis tejaswini, (c) Ichthyophis cf. longicephalus and (d) Uraeotyphlus cf. oxyurus displayed in LD cycle. Mean surface activity is represented (in minutes) on the radial axis and time in 24 h is denoted on the outer circle.
