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Fig. 3 | BMC Biology

Fig. 3

From: Evolution of left–right asymmetry in the sensory system and foraging behavior during adaptation to food-sparse cave environments

Fig. 3

Laterality in behavioral output among surface fish and cavefish populations of Astyanax mexicanus. A Schemes representing left or right approaches expressed as NOA (top) and left or right adherence expressed as DIR (bottom). B Histograms for the L–R NOA ratio (the right-side NOA divided by the total NOA) across all four populations. Density curves overlaid on these data distributions. C Histograms for the L–R DIR ratio (the right-side DIR divided by the total DIR) across all four populations. Density curves overlaid on these data distributions. Ratios of < 0.33 indicate a strong left preference, ratios of 0.33–0.67 indicate balanced approaches, and ratios of > 0.67 indicate a strong right preference. Los Sabinos cavefish showed a gaussian-like distribution, whereas many surface fish and the other cavefish individuals exhibited strong left or right bias. Notably, all four populations included a few individuals that showed strong left or right preferences (near 0.0 or 1.0, respectively)

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BMC Biology

ISSN: 1741-7007

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