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Figure 6 | Frontiers in Zoology

Figure 6

From: A meal or a male: the ‘whispers’ of black widow males do not trigger a predatory response in females

Figure 6

Comparison of vibration parameters associated with struggling prey and courting male spiders on webs of Latrodectus hesperus and Tegenaria agrestis . (a-1) and (b-1) Discriminant function analysis using dominant frequency, frequency bandwidth, root mean square amplitude and duration (transformed data) of vibrations produced by cricket and house fly prey and by males of Latrodectus hesperus and Tegenaria agrestis on empty L. hesperus webs (a-1) and T. agrestis webs (b-1) (n = 16 each). The inner circle shows the 95% confidence ellipse of each mean; the outer circle shows the normal 50% contours; (a-2 to a-4) and (b-2 to b-4) Boxplots of dominant frequency [Hz], root mean square (RMS) amplitude [mm/s] and duration [s] of vibrations produced by cricket and house fly prey and by males of L. hesperus and T. agrestis on empty L. hesperus webs (a-2 to a-4) and T. agrestis webs (b-2 to b-4) (n = 16 each). Median, mean, interquartile range (IQR) and outliers (untransformed data); whiskers = upper and lower data point values within 1.5 IQR; means with different letters are significantly different (Tukey’s HSD on transformed data, p < 0.05).

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