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Related Experiment Video

Updated: Apr 19, 2026

Methods for Rearing the Parasitoid Ganaspis brasiliensis, a Promising Biological Control Agent for the Invasive Drosophila suzukii

Methods for Rearing the Parasitoid Ganaspis brasiliensis, a Promising Biological Control Agent for the Invasive Drosophila suzukii

Published on: June 2, 2022

Enemy-free space for parasitoids.

Shannon M Murphy¹, John T Lill, M Deane Bowers

¹Department of Biological Sciences, University of Denver, Denver, CO 80208, USA.

Environmental Entomology

|December 6, 2014

Summary

This summary is machine-generated.

Natural enemies drive evolution, favoring traits for "enemy-free space" (EFS). This study explores how parasitoids use host and plant traits to achieve EFS, broadening EFS theory in ecology.

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Area of Science:

Evolutionary Ecology
Community Ecology
Parasitoid Biology

Background:

Natural enemies are key drivers of mortality and natural selection.
Enemy-free space (EFS) theory explains how prey evolve to escape predators.
EFS has been narrowly applied, primarily to insect herbivores and host plants.

Purpose of the Study:

To explore the broader applicability of EFS theory beyond specialist herbivores.
To investigate EFS as a structuring force in ecological niches for higher trophic levels.
To examine host use by parasitoids through the lens of EFS.

Main Methods:

Analysis of caterpillar-parasitoid interactions.
Identification of mechanisms by which parasitoids achieve EFS.
Theoretical exploration of EFS in higher trophic levels.

Main Results:

Parasitoids may exploit host and plant traits to secure EFS for offspring.
Three distinct mechanisms for parasitoid EFS acquisition were identified.
The concept of EFS has been underutilized in understanding parasitoid host use.

Conclusions:

Re-evaluating EFS for parasitoids can enhance ecological and evolutionary understanding.
Parasitoids are promising models for expanding EFS theory.
Neglecting EFS in parasitoid research limits basic and applied ecology.