Related Experiment Video
Updated: Nov 12, 2025
09:49
Identification of Olfactory Volatiles using Gas Chromatography-Multi-unit Recordings GCMR in the Insect Antennal Lobe
Published on: February 24, 2013
14.5K
Spatial odor discrimination in the hawkmoth, Manduca sexta (L.)
Kalyanasundaram Parthasarathy1, M A Willis2
1Department of Biology, Case Western Reserve University, Cleveland, OH 44106-7080, U.S.A tk.parthasarathy@gmail.com.
Biology Open
|March 19, 2021
Summary
Hawkmoths can distinguish which antenna detects an odor first, suggesting they use spatial cues. This finding opens possibilities for understanding how insects navigate using both spatial and temporal odor information.
Area of Science:
- Insect olfaction
- Animal behavior
- Sensory neuroscience
Background:
- Flying insects rely on odor plumes for essential behaviors like finding mates and food.
- Current understanding emphasizes temporal odor cues (timing and intervals) for plume tracking.
- Limited research explores insects' use of spatial odor information derived from bilateral antennae.
Purpose of the Study:
- To investigate if hawkmoths (Manduca sexta) can discriminate odor stimuli based on antennal input.
- To determine if moths utilize spatial information from odor distribution during flight.
Main Methods:
- Utilized the proboscis extension reflex (PER) associative learning protocol.
- Adapted PER to test hawkmoths' ability to differentiate odor arrival between left and right antennae.
Main Results:
- Hawkmoths demonstrated >70% accuracy in discriminating the side of odor stimulus arrival.
- This indicates moths can perceive spatial differences in odor presentation.
Conclusions:
- Hawkmoths possess the capability to derive spatial information from odor stimuli via their antennae.
- Moths may integrate both spatial and temporal cues for effective odor source localization and navigation.
