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Related Experiment Video

Updated: May 13, 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

Elevated temperature and drought interact to reduce parasitoid effectiveness in suppressing hosts.

Cecilia M Romo¹, Jason M Tylianakis

¹School of Biological Sciences, University of Canterbury, Christchurch, New Zealand. ceciro@gmail.com

|March 9, 2013

Summary

Climate change impacts natural pest control. Combined warming and drought harm beneficial parasitoids, making pest outbreak predictions more complex.

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Last Updated: May 13, 2026

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

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Propagation of the Microsporidian Parasite Edhazardia aedis in Aedes aegypti Mosquitoes

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Published on: August 13, 2020

Area of Science:

Ecology
Climate Change Biology
Entomology

Background:

Climate change alters natural enemy populations crucial for controlling crop pests.
Rising temperatures and extreme weather can disrupt predator-prey dynamics across trophic levels.

Purpose of the Study:

To investigate how temperature variations affect aphid-parasitoid interactions.
To examine the combined effects of warming and drought on parasitoid performance and pest control.

Main Methods:

Field observations of aphid-parasitoid systems under varying temperatures.
Laboratory experiments simulating increased temperature and drought conditions.

Main Results:

Temperature positively correlated with parasitoid attack rates but also with hyperparasitism.
Combined warming and drought significantly reversed positive effects of individual stressors on parasitoid control of aphids.
Interacting climate drivers led to reduced parasitoid longevity and emergence, despite isolated benefits.

Conclusions:

Higher trophic levels (hyperparasitoids) may counteract climate warming benefits for pest control.
Non-additive effects of climate drivers and differential responses across trophic levels complicate pest outbreak predictions.
Predicting future pest outbreaks under climate change is more challenging than anticipated.