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Herbivore-induced Blueberry Volatiles and Intra-plant Signaling

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Variation in Ants' Chemical Recognition Signals across Vineyard Agroecosystems.

Arthur Hais¹, Luca Pietro Casacci¹, Patrizia d'Ettorre²

¹Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123 Turin, Italy.

International Journal of Molecular Sciences

|October 16, 2024

Summary

Ants recognize nestmates using cuticular hydrocarbons (CHCs). This study reveals vineyard management impacts Lasius paralienus CHC profiles, affecting dehydration resistance and colony recognition.

Keywords:

Lasius paralienus cuticular hydrocarbons organic agriculture soil respiration vineyards

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Area of Science:

Ecology
Chemical Ecology
Entomology

Background:

Ant colony success relies on nestmate recognition via cuticular hydrocarbons (CHCs).
Anthropic impacts on CHC profiles are understudied, particularly in Lasius paralienus.

Purpose of the Study:

To investigate changes in Lasius paralienus CHC profiles in agroecosystems.
To assess the influence of different vineyard management practices on these profiles.

Main Methods:

Surveyed CHC assemblages in Lasius paralienus across agroecosystems.
Collected soil samples from ant nests and surroundings to measure microhabitat variations.
Analyzed CHC composition in relation to vineyard management and soil respiration.

Main Results:

Area differences significantly affected Lasius paralienus CHC composition, with some anthropic influence.
Normalized soil respiration partially explained inter-area variations in CHCs.
Vineyard management (conventional/organic) impacted linear alkanes (dehydration resistance) and other colony identity compounds.

Conclusions:

Vineyard practices alter ant cuticle features, potentially influencing microclimate adaptations.
Further behavioral studies are needed to understand the disruptive effects of these changes on ant colonies.