Tracking Varroa Parasitism Using Handheld Infrared Cameras: Is Eusocial Fever the Key?
Tamás Sipos1, Szilvia Orsi-Gibicsár1, Tamás Schieszl2
1Department of Agronomy, Institute of Agronomy, Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, S. Guba Str. 40, H-7400 Kaposvár, Hungary.
Insects
|September 28, 2024
Summary
Infrared imaging detects temperature changes in honey bee pupae caused by Varroa mite parasitism. This non-invasive method offers a promising tool for monitoring bee health and Varroa destructor spread.
Area of Science:
- Apiculture
- Veterinary Entomology
- Thermal Imaging
Background:
- The Varroa destructor mite poses a significant threat to global honey bee (Apis mellifera) health.
- Current detection methods for Varroa mites within brood cells are invasive and labor-intensive.
Purpose of the Study:
- To investigate the utility of infrared imaging for non-invasively detecting Varroa mite parasitism in honey bee brood.
- To analyze thermal differences between healthy and Varroa-infested bee pupae.
Main Methods:
- Utilized a handheld infrared camera (FLIR E5-XT WIFI) to capture thermal images of capped brood frames from five beehives over two years.
- Measured temperature variations in intact and Varroa-parasitized Apis mellifera worker broods.
Main Results:
- Infrared imaging successfully detected temperature differences in capped brood cells, distinguishing between healthy and Varroa-parasitized pupae.
- Varroa mite parasitism induced a sustained, time-dependent temperature increase in developing bee pupae.
- Observed two distinct heating patterns in infested cells, potentially indicating a social fever response by worker bees.
Conclusions:
- Infrared imaging is a viable, non-invasive technique for detecting Varroa mite infestations in honey bee colonies.
- Future integration with AI could provide beekeepers and researchers with efficient tools for high-throughput Varroa detection and management.
