Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Elevated CO<sub>2</sub> and Water Limitation Alter the Primary Metabolite Composition of Mealybug Honeydew, Reducing Parasitoid Fitness.

Journal of agricultural and food chemistry·2026
Same author

Ecological role of emergent properties in the chemodiversity landscape.

Nature ecology & evolution·2026
Same author

Ecological Drivers of Microbiota Diversity in the Pharmacophagous Turnip Sawfly.

Environmental microbiology·2026
Same author

Fighting for Chemicals: Pharmacophagy-Induced Contest Behaviour and Its Molecular Signatures in a Sawfly.

Molecular ecology·2026
Same author

Individualised niches: an integrative conceptual framework across behaviour, ecology, and evolution.

Biological reviews of the Cambridge Philosophical Society·2026
Same author

Plant accession and insect infestation, rather than silicon supplementation, shape defence strategies of Arabidopsis halleri towards a leaf beetle.

Plant biology (Stuttgart, Germany)·2025

Related Experiment Video

Updated: Oct 11, 2025

Topical Application Bioassay to Quantify Insecticide Toxicity for Mosquitoes and Fruit Flies
09:37

Topical Application Bioassay to Quantify Insecticide Toxicity for Mosquitoes and Fruit Flies

Published on: January 19, 2022

6.4K

Gregarines modulate insect responses to sublethal insecticide residues.

Marina Wolz1, Alia Schrader1, Eileen Whitelaw1

  • 1Department of Chemical Ecology, Bielefeld University, Universitätsstr. 24, 33615, Bielefeld, Germany.

Oecologia
|December 1, 2021
PubMed
Summary

Insect endoparasites (gregarines) and pesticide exposure negatively impact leaf beetle survival and reproduction. Combined stressors increase gregarine infection loads and reduce insect survival, highlighting risks to insect populations.

Keywords:
Combined challengesFitnessGregarinesLeaf beetlePyrethroid

More Related Videos

Identification of Olfactory Volatiles using Gas Chromatography-Multi-unit Recordings GCMR in the Insect Antennal Lobe
09:49

Identification of Olfactory Volatiles using Gas Chromatography-Multi-unit Recordings GCMR in the Insect Antennal Lobe

Published on: February 24, 2013

14.5K
Bioassays for Monitoring Insecticide Resistance
06:30

Bioassays for Monitoring Insecticide Resistance

Published on: December 30, 2010

33.5K

Related Experiment Videos

Last Updated: Oct 11, 2025

Topical Application Bioassay to Quantify Insecticide Toxicity for Mosquitoes and Fruit Flies
09:37

Topical Application Bioassay to Quantify Insecticide Toxicity for Mosquitoes and Fruit Flies

Published on: January 19, 2022

6.4K
Identification of Olfactory Volatiles using Gas Chromatography-Multi-unit Recordings GCMR in the Insect Antennal Lobe
09:49

Identification of Olfactory Volatiles using Gas Chromatography-Multi-unit Recordings GCMR in the Insect Antennal Lobe

Published on: February 24, 2013

14.5K
Bioassays for Monitoring Insecticide Resistance
06:30

Bioassays for Monitoring Insecticide Resistance

Published on: December 30, 2010

33.5K

Area of Science:

  • Ecology
  • Environmental Toxicology
  • Parasitology

Background:

  • Insects face environmental challenges, including endoparasites like gregarines and anthropogenic pesticide pollution.
  • Gregarines are common invertebrate endoparasites affecting host fitness but are often overlooked in ecological studies.
  • Pesticide exposure poses a significant threat to non-target insect populations.

Purpose of the Study:

  • To investigate how gregarine infection modulates the effects of sublethal insecticide exposure on the leaf beetle Phaedon cochleariae.
  • To assess the impact of these combined stressors on insect food consumption, life history traits, and survival.

Main Methods:

  • Laboratory study using the leaf beetle Phaedon cochleariae.
  • Exposure to sublethal insecticide concentrations and natural gregarine infection.
  • Monitoring of larval food consumption, development time, adult body mass, reproduction, and survival probability.

Main Results:

  • Larval food consumption was unaffected by gregarine infection or insecticide exposure.
  • Gregarine infection delayed development; insecticide exposure reduced male body mass and female reproduction.
  • Combined stressors resulted in the lowest survival probability.
  • Sublethal insecticide exposure increased gregarine infection load.

Conclusions:

  • Gregarine infection and pesticide exposure have detrimental effects on non-target insects, impacting population dynamics.
  • The combined effects of natural parasitism and agrochemical pollution exacerbate insect vulnerability.
  • Ecological risk assessments must consider the role of natural parasite infections in insect responses to environmental stressors.