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Figure 3


Fig. 3. Mean number of strikes by untreated M. canis on the four targets: odor/turbulence (OT), odor alone (O), seawater/turbulence (SWT) and seawater alone (SW). (A) Intact, in the light, the animals preferred the odor side (OT+O) over the seawater side (SWT+SW; WSR=27.5, P=0.002, N=10) and the odor/turbulence over the odor alone (WSR=23.5, P=0.01, N=10). (B) Intact, in the dark, the animals preferred the odor side over the seawater side (WSR=27.5, P=0.002, N=10) and the source of odor/turbulence over the source of odor alone (WSR=27.5, P=0.002, N=10). (C) Lateral line lesioned, in the light, the animals preferred the odor side over the seawater side (WSR=10.5, P=0.03, N=6) but did not discriminate between odor/turbulence and odor alone (WSR=5.5, P=0.1, N=6). (D) Lateral line lesioned, in the dark, the animals no longer displayed a preference for the odor side over the seawater side (WSR=3.0, P=0.2, N=3). Gray bars, fluorescent light (light); black bars, infrared light (dark).





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