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Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin

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Published on: August 14, 2018

When do herbivorous insects compete? A phylogenetic meta-analysis.

Gwendolyn Bird¹, Chloe Kaczvinsky¹, Alan E Wilson²

¹Department of Entomology and Plant Pathology, Auburn University, Auburn, AL, USA.

Ecology Letters

|March 9, 2019

Summary

This summary is machine-generated.

Competition among herbivorous insects intensifies with shared resources and proximity. Contrary to expectations, specialists and generalists face similar competitive pressures, highlighting complex ecological interactions.

Keywords:

Competition enemy-mediated indirect competition plant-mediated tri-trophic interactions

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Area of Science:

Ecology
Evolutionary Biology
Entomology

Background:

Herbivorous insect interactions can impact individual fitness, but the drivers of this variation are poorly understood.
Traditional ecological theory posits that competition increases with niche overlap and population density.
Hypotheses on insect diversification suggest diet specialists outperform generalists in competition.

Discussion:

This study investigates competition in herbivorous insects using phylogenetic meta-analysis.
Factors examined include diet breadth, population density, and niche overlap proxies (phylogenetic relatedness, physical proximity, feeding guild).
Findings indicate competition rises with population density and phylogenetic/physical proximity.

Key Insights:

Competition is stronger between than within feeding guilds, contrary to predictions.
Diet specialists and generalists experience comparable competitive effects.
This research provides the first statistical evidence that niche overlap drives competition in herbivorous insects.

Outlook:

Complex feeding guild dynamics suggest significant indirect interactions beyond direct niche overlap.
Further research is needed to fully elucidate the intricate web of herbivore interactions.
Understanding these competitive dynamics is crucial for predicting insect community structure and dynamics.