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Electrophysiological Recording from Drosophila Trichoid Sensilla in Response to Odorants of Low Volatility

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Predatory lizards perceive plant-derived volatile odorants.

Jay K Goldberg¹, Genevieve Pintel², Stacey L Weiss³

¹Department of Biology Indiana University Bloomington Indiana.

Ecology and Evolution

|April 30, 2019

Summary

This summary is machine-generated.

Lizards respond to plant volatiles associated with herbivores. Different lizard species, like Sceloporus virgatus and Aspidoscelis exsanguis, react to specific odors based on their unique foraging strategies.

Keywords:

foraging strategies lizards olfaction plant indirect defense tri‐trophic interactions

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Area of Science:

Ecology
Animal Behavior
Chemical Ecology

Background:

Many lizards rely on smell to find prey, primarily herbivorous arthropods.
The role of lizards in plant indirect defense, mediated by plant volatiles, is not well understood.

Purpose of the Study:

To investigate lizard responses to two specific herbivore-associated plant volatiles: 2-(E)-hexenal and hexanoic acid.
To determine if foraging behavior influences olfactory responses in lizards.

Main Methods:

A cotton-swab odor presentation assay was employed.
The study focused on two lizard species: Sceloporus virgatus (ambush foraging) and Aspidoscelis exsanguis (active foraging).

Main Results:

Aspidoscelis exsanguis showed a strong response to hexanoic acid.
Sceloporus virgatus responded to 2-(E)-hexenal, a volatile linked to plant indirect defense.

Conclusions:

Lizard olfactory responses to plant volatiles are linked to their foraging modes.
Sceloporus virgatus may play a role in plant indirect defense by responding to specific herbivore-associated odors.