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Updated: Feb 1, 2026

Detecting Virus and Salivary Proteins of a Leafhopper Vector in the Plant Host

Detecting Virus and Salivary Proteins of a Leafhopper Vector in the Plant Host

Published on: September 14, 2021

Unifying host-associated diversification processes using butterfly-plant networks.

Mariana P Braga¹, Paulo R Guimarães², Christopher W Wheat³

¹Department of Zoology, Stockholm University, Stockholm, 10691, Sweden. mariana.braga@zoologi.su.se.

Nature Communications

|December 6, 2018

Summary

This summary is machine-generated.

Insect herbivore diversity is explained by continuous host use variability, not just major host switches. This new method clarifies evolutionary ecology debates and butterfly diversification patterns.

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Last Updated: Feb 1, 2026

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Deploying Community Scientists to Conduct Nondestructive Genetic Sampling of Rare Butterfly Populations

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Area of Science:

Evolutionary Ecology
Phylogenetics
Insect Biodiversity

Background:

Explaining the exceptional diversity of herbivorous insects is a long-standing challenge in evolutionary ecology.
Two prominent hypotheses for insect diversification are radiations after major host switches and continuous host use variability.
Current methods struggle to differentiate between these hypotheses, leading to ongoing scientific debate.

Purpose of the Study:

To develop and apply a novel approach combining network and phylogenetic analyses to distinguish between competing hypotheses of insect diversification.
To quantify the relative contributions of host-use variability and host-switch radiations to diversification in butterflies.
To reconcile alternative explanations for the evolutionary success of herbivorous insects.

Main Methods:

Development of an approach integrating network analysis and phylogenetic methods to identify distinct network structures produced by each diversification hypothesis.
Application of the developed method to analyze diversification patterns in two major butterfly families: Pieridae and Nymphalidae.
Direct quantification of support for host-use variability versus host-switch radiations as drivers of diversification.

Main Results:

The study demonstrates that different diversification hypotheses generate divergent ecological network structures.
Variability in host use was found to be a crucial driver of butterfly diversification across the studied families.
While less common, radiations following colonization of a new host can lead to significant increases in diversity.

Conclusions:

The developed network and phylogenetic approach successfully quantifies support for competing hypotheses in evolutionary biology.
Variability in host use is essential for the diversification of herbivorous insects, specifically butterflies.
Radiations triggered by major host switches are rare but can be potent drivers of diversification, offering a reconciled view of evolutionary processes.