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Fig. 4 | BMC Evolutionary Biology

Fig. 4

From: Age related decline in female lar gibbon great call performance suggests that call features correlate with physical condition

Fig. 4

Analysis of climax notes that are followed by high note inhalations versus those that are not, within animals. Climax notes that are followed by high notes are longer (a), have a higher maximum F0 frequency (b) and a higher delta F0 frequency (c) than notes that are not followed by high notes. White bars: climax notes not followed by a high note, Black bars: climax notes followed by a high note. Error bars represent ± 1 SEM. **: P < 0.01, ****: P < 0.0001

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