How Hawkmoths Control Their Pitch Turns
Author Information
Author(s): Leo J. Wood, Joy Putney, Simon Sponberg
Primary Institution: Georgia Institute of Technology
Hypothesis
The indirect power musculature in the hawkmoth Manduca sexta does contribute to pitch control.
Conclusion
The study found that changes in the timing of flight power muscles significantly affect pitch control in hawkmoths.
Supporting Evidence
- Changes in the timing of the DLMs and DVMs were significantly correlated with pitch turns.
- Electrical stimulation of the DLMs produced consistent changes in pitch torque.
- Greater time between DLM and DVM spikes led to upward pitch, while less time led to downward pitch.
Takeaway
Hawkmoths need to coordinate their muscles to turn in the air, and just changing one muscle's timing isn't enough to make a precise turn.
Methodology
The study used spike-resolution electromyography and electrical stimulation to analyze muscle timing and its effects on pitch control during tethered flight.
Limitations
The study was conducted on tethered moths, which may not fully represent natural flight conditions.
Participant Demographics
Naive male and female hawkmoths (Manduca sexta) were used in the experiments.
Statistical Information
P-Value
0.003
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website