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Harvesting Venom Toxins from Assassin Bugs and Other Heteropteran Insects
Published on: April 21, 2018
Assassin bug uses aggressive mimicry to lure spider prey
Anne E Wignall1, Phillip W Taylor
1Department of Biological Sciences, Macquarie University, Sydney 2109, Australia. anne.wignall@mq.edu.au
Proceedings. Biological Sciences
|October 29, 2010
Summary
Assassin bugs mimic prey vibrations to hunt spiders. By plucking silk, they generate vibrations similar to prey, luring spiders into attack range effectively.
Area of Science:
- Behavioral Ecology
- Predator-Prey Interactions
- Vibrational Communication
Background:
- Assassin bugs (Stenolemus bituberus) are predators that hunt web-building spiders.
- These bugs use silk plucking to generate vibrations, mimicking prey to lure spiders.
Purpose of the Study:
- To determine if assassin bug vibrations mimic insect prey vibrations.
- To compare spider responses to bug-generated vibrations versus prey, courting males, and falling leaves.
Main Methods:
- Recorded and analyzed vibrations produced by bugs, prey, courting males, and falling leaves.
- Observed and compared spider behavioral responses (orientation, approach) to different vibration sources.
Main Results:
- Spiders showed similar orientation and approach behaviors to bug and prey vibrations.
- Vibrations from bugs shared peak frequency and duration similarities with prey and courting males.
- Bug vibrations' temporal structure and amplitude closely matched prey movements, distinct from other stimuli.
Conclusions:
- Assassin bugs effectively mimic a subset of prey vibrations, not the full range.
- This mimicry is sufficient for luring spiders into striking range, highlighting a specialized predatory strategy.
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