a separate scanning vibrometer measured the motion of the entire spider body on the web. I feel deep gratitude to the females who cooperated during the experiments. They were free to go anywhere, do anything.
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And if they decide to eat him, that's a decision they made and likely not a sensory mistake!https://academic.oup.com/beheco/article-abstract/9/1/33/239370 …
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But posture, on the other hand, changes everything! Tuning at all the joints changes! Here's an example below...what happens in the crouching posture is tuning shifts up in frequency...pic.twitter.com/LTNFTKdPNz
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This shift may allow female to ignore low frequency vibrations, typically found in male courtship and in large prey items and to concentrate on smaller prey items. So basically females may be deployin this posture when they're hungry.
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Paying more 'attention' to small prey on the web! Or perhaps when winds blow and the whole web shakes. They may use this posture to prevent their mechanosensory system from being desensitized by overstimulation!
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So essentially we show that female black widow spiders can use posture to change the tuning of their mechanosensory system and can use it to direct attention to different signal components!
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