Varroa mites are the most destructive parasite affecting honey bee colonies worldwide. In this Bee Science Short, Dr. Dewey Caron explains how Varroa destructor reproduces, spreads within colonies, and why understanding the mite's biology is essential for modern beekeeping.

Female Varroa mites enter brood cells shortly before they are capped and reproduce alongside the developing bee. Inside the sealed cell, mites feed on the developing bee and produce offspring that emerge with the young adult bee. Because the mite's reproductive cycle is closely tied to brood production, populations can increase rapidly during the active season.

Beyond direct feeding damage, Varroa mites also spread viruses that weaken colonies and shorten the lifespan of worker bees. Dewey explains why unchecked mite populations can quickly overwhelm a colony if they are not monitored and managed.

For beekeepers, the key is awareness. Regular monitoring allows beekeepers to track mite levels and respond before populations reach damaging levels. Understanding the biology of Varroa helps beekeepers make informed decisions about management strategies and colony health.

This episode is part of the Bee Science with Dewey series, where Dr. Caron shares practical explanations of honey bee biology to help beekeepers better understand what is happening inside their colonies.

Links and references mentioned in this episode:

• Lundin, Ola. Et. al. 2021. Integrated pest and pollinator management – expanding the concept. Frontiers Ecol & Environ. https://doi.org/10.1002/fee.2325

• Caron, Dewey and review committee. Tools for Varroa Management. Honey Bee Health Coalition https://honeybeehealthcoalition.org/resources/varroa-management/ (you want to get the 9th edition (available soon)

• Bruckner, Selina, et.al. 2025. Let's not sugar coat it: the powdered sugar shake is Published online: https://doi.org/10.1080/00218839.2025.2550855

• Caron, D.M. and L. J. Connor. 2025. Honey bee Biology and Beekeeping. Wicwas Press.

______________

Brought to you by Betterbee – your partners in better beekeeping.

Betterbee is the presenting sponsor of Beekeeping Today Podcast. Betterbee's mission is to support every beekeeper with excellent customer service, continued education and quality equipment. From their colorful and informative catalog to their support of beekeeper educational activities, including this podcast series, Betterbee truly is Beekeepers Serving Beekeepers. See for yourself at www.betterbee.com

_______________

We hope you enjoy this podcast and welcome your questions and comments in the show notes of this episode or: [email protected]

Thank you for listening!

Podcast music: Be Strong by Young Presidents; Epilogue by Musicalman; Faraday by BeGun; Walking in Paris by Studio Le Bus; A Fresh New Start by Pete Morse; Wedding Day by Boomer; Christmas Avenue by Immersive Music; Red Jack Blues by Daniel Hart; Bolero de la Fontero by Rimsky Music; Perfect Sky by Graceful Movement; Original guitar background instrumental by Jeff Ott.

Beekeeping Today Podcast is an audio production of Growing Planet Media, LLC

** As an Amazon Associate, we may earn a commission from qualifying purchases

Copyright © 2026 by Growing Planet Media, LLC