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Related Experiment Video

Updated: May 25, 2026

Application of Two-spotted Spider Mite Tetranychus urticae for Plant-pest Interaction Studies

Application of Two-spotted Spider Mite Tetranychus urticae for Plant-pest Interaction Studies

Published on: July 4, 2014

Coincidental intraguild predation by caterpillars on spider mites.

Kanako Shirotsuka¹, Shuichi Yano

¹Laboratory of Ecological Information, Department of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan, kshiro@kais.kyoto-u.ac.jp.

Experimental & Applied Acarology

|January 31, 2012

Summary

Large herbivores may consume small mites, a phenomenon called intraguild predation (IGP). This study observed herbivore caterpillars preying on spider mites, indicating IGP occurs in natural settings.

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Area of Science:

Ecology
Predator-prey dynamics
Interspecific interactions

Background:

Intraguild predation (IGP) typically involves carnivores sharing prey.
Large herbivores might also engage in IGP by consuming smaller herbivores.
This study explores IGP between large herbivores and spider mites.

Purpose of the Study:

To investigate coincidental intraguild predation (IGP) by herbivores on spider mites.
To observe the behavioral responses of spider mites to herbivore attacks.
To determine if herbivore feeding is affected by the presence of spider mites.

Main Methods:

Observed Tetranychus kanzawai mite responses to hornworm (Theretra spp.) feeding on Cayratia japonica.
Examined Panonychus citri mite interactions with Papilio xuthus caterpillars on citrus plants.
Documented mite consumption, including eggs and quiescent stages, alongside plant material.

Main Results:

Spider mites attempted to escape intraguild predation by herbivores.
Mites, eggs, and leaves were consumed, confirming coincidental IGP.
Herbivores did not avoid mite-infested leaves, indicating no deterrence.

Conclusions:

Coincidental intraguild predation by large herbivores on spider mites occurs in natural environments.
Spider mites possess limited defenses against this form of predation, primarily relying on escape.
Herbivore feeding behavior is not influenced by the presence of spider mites on host plants.