Exposure to an additional alternating magnetic field affects comb building by worker hornets.

Bioeffects Seen

Ishay JS, Plotkin M, Volynchik S, Shaked M, Schuss Z, Bergman DJ. · 2007

Weak power-frequency magnetic fields disrupted hornet construction behavior by up to 55%, showing biological sensitivity at everyday exposure levels.

Plain English Summary

Summary written for general audiences

Researchers exposed worker hornets to weak 50 Hz magnetic fields (similar to power line frequency) for two weeks and found dramatic disruptions in their natural building behavior. The exposed hornets built 35-55% fewer cells, created deformed hexagonal structures, and produced more fragile comb stems compared to unexposed hornets. This demonstrates that even very low-level magnetic field exposure can interfere with complex biological processes that insects rely on for survival.

Why This Matters

This study reveals something profound about how magnetic fields affect living systems. The hornets were exposed to just 50-70 milligauss of 50 Hz magnetic fields - levels you might encounter near some household appliances or power lines. Yet this relatively modest exposure completely disrupted their sophisticated construction abilities, which are critical for colony survival. What makes this particularly significant is that insects navigate and build using incredibly precise biological mechanisms that have evolved over millions of years. The fact that artificial magnetic fields can interfere with these finely tuned systems suggests our modern electromagnetic environment may be disrupting biological processes in ways we're only beginning to understand. While we can't directly extrapolate from hornets to humans, this research adds to the growing body of evidence showing that living organisms are far more sensitive to electromagnetic fields than regulatory agencies typically acknowledge.

Exposure Details

Magnetic Field: 0.005 - 0.007 mG
Source/Device: 50 Hz
Exposure Duration: 2 Weeks

Exposure Context

This study used 0.005 - 0.007 mG for magnetic fields:

250x above the Building Biology guideline of 0.2 mG
50x above the BioInitiative Report recommendation of 1 mG

Building Biology guidelines are practitioner-based limits from real-world assessments. BioInitiative Report recommendations are based on peer-reviewed science. Check Your Exposure to compare your own measurements.

Where This Falls on the Concern Scale

Study Details

To study the effects of Exposure to an additional alternating magnetic field on comb building by worker hornets.

In an ABB with adult workers (more than 24 h after eclosion), exposed to an AC (50 Hz) magnetic fie...

The effects of the additional magnetic field consist of (a) 35-55% smaller number of cells and fewer...

Cite This Study

Ishay JS, Plotkin M, Volynchik S, Shaked M, Schuss Z, Bergman DJ. (2007). Exposure to an additional alternating magnetic field affects comb building by worker hornets. Physiol Chem Phys Med NMR. 39(1):83-88, 2007.

Show BibTeX

@article{js_2007_exposure_to_an_additional_261,
  author = {Ishay JS and Plotkin M and Volynchik S and Shaked M and Schuss Z and Bergman DJ.},
  title = {Exposure to an additional alternating magnetic field affects comb building by worker hornets.},
  year = {2007},
  
  url = {https://europepmc.org/article/med/18613641},
}

PubMed: 18613641

Cited By (3 papers)

Retraction of: EUROPAEM EMF Guideline 2015 for the prevention, diagnosis and treatment of EMF-related health problems and illnesses
I. Belyaev et al. (2015) - 19 citations
The effects of dietary proline, β-alanine, and γ-aminobutyric acid (GABA) on the nest construction behavior in the Oriental hornet (Vespa orientalis)
Sofia Bouchebti et al. (2022) - 13 citations
Reproducibility and desensitization of the power frequency magnetic field effect on movement of the common cutworm Spodoptera litura
Jeong-min Ryu et al. (2009) - 4 citations

Quick Questions About This Study

Yes, research shows power line frequency magnetic fields can significantly disrupt insect behavior. A 2007 study found hornets exposed to 50 Hz fields built 35-55% fewer nest cells and created deformed structures, demonstrating that even weak magnetic fields interfere with complex biological processes insects need for survival.

Studies indicate 50 Hz magnetic fields can harm insects by disrupting their natural behaviors. Researchers found worker hornets exposed to power line frequency fields for two weeks built dramatically fewer nest cells, created deformed hexagonal structures, and produced more fragile construction compared to unexposed hornets.

Magnetic field exposure can severely disrupt natural building behaviors in insects. Research on hornets showed that 50 Hz magnetic fields caused 35-55% reduction in cell construction, created asymmetrical and deformed hexagonal cells, and resulted in more delicate, fragile nest stems over a two-week exposure period.

Research suggests low frequency EMFs can negatively impact wildlife behavior and survival abilities. A study on hornets found that exposure to 50 Hz magnetic fields significantly reduced their nest-building capacity, created structural deformities, and weakened their construction, potentially threatening their ability to reproduce and survive.

Power frequency magnetic fields can cause measurable biological effects including disrupted behavior patterns and structural abnormalities. Research on hornets exposed to 50 Hz fields showed dramatically reduced building activity, deformed cell construction, and weakened nest structures, indicating these fields interfere with essential biological processes.