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Vibratory stimuli in host location by parasitic wasps
1Institute of Plant Diseases and Plant Protection (IPP), University Hanover, Herrenhäuser Str. 2, D-30419, Hanover, Germany
Journal of Insect Physiology
|May 29, 2003
Summary
Parasitic wasps utilize substrate-borne vibrations for host location, a behavior termed vibrotaxis. While evidence grows, definitive proof requires further bioassays comparing natural and artificial vibration responses.
Area of Science:
- Behavioral Ecology
- Entomology
- Sensory Biology
Background:
- Parasitic wasps rely on diverse stimuli for host detection and selection.
- Mechanical stimuli, specifically substrate-borne vibrations, are increasingly recognized as crucial cues.
- Vibrotaxis, the directed movement towards vibration sources, is a proposed mechanism.
Purpose of the Study:
- To review and critically evaluate evidence for vibrotaxis in parasitoids.
- To propose criteria for classifying behavioral responses to vibrations (vibrotaxis vs. vibrokinesis).
- To compare existing studies on parasitoid exploitation of host-associated vibrations.
Main Methods:
- Literature review of 14 studies on parasitoid responses to vibrations.
- Analysis of experimental designs, vibrational signal characterization, and parasitoid movement.
- Proposal of criteria to distinguish vibrotaxis from vibrokinesis.
Main Results:
- Growing evidence supports the use of host vibrations by parasitic wasps.
- A definitive proof for vibrotaxis is currently lacking.
- Existing studies vary in experimental rigor and signal characterization.
Conclusions:
- Further bioassays are needed to elucidate the precise mechanisms of vibration use.
- Both vibrotaxis and vibrokinesis are likely important host-location strategies.
- Exploitation of vibrations may contribute to niche differentiation within parasitoid communities.