10/15/2026
š Understanding Golden West Ć Pol-Line VSH Honey Bees
Not all honey bees are bred for the same characteristics. Some breeding programs focus on honey production, others on temperament, winter survival, disease resistance, or the ability to manage parasites.
Our Golden West Ć Pol-Line VSH bees represent a combination of genetics intended to bring several of these desirable traits together.
š What Are Golden West Bees?
Golden West is a honey bee breeding line associated with productive, gentle colonies and strong population growth.
A gentle temperament is especially valuable to beekeepers because it makes routine hive inspections easier and less disruptive. Strong spring buildup is also important because a colony needs a large population of healthy worker bees to take advantage of nectar flows.
Honey production depends on many factors, including weather, available forage, colony strength, and management. Genetics play a role by influencing characteristics such as population growth and foraging behavior.
š What Are Pol-Line VSH Bees?
Pol-Line is a breeding line developed through research involving the USDA Agricultural Research Service and commercial bee breeders.
The goal was to incorporate Varroa Sensitive Hygiene (VSH) into honey bees while maintaining characteristics important to commercial beekeeping, including colony productivity.
Varroa destructor mites are external parasites that reproduce inside capped honey bee brood cells. They feed on developing and adult bees and can transmit harmful viruses, including deformed wing virus.
Heavy mite infestations can weaken colonies, shorten worker bee lifespans, and contribute to colony losses.
š How Does VSH Actually Work?
VSH is a genetically influenced hygienic behavior that helps honey bees interfere with Varroa mite reproduction.
When a female Varroa mite enters a brood cell, she hides inside until the cell is capped. Once the developing bee is sealed inside, the mite begins reproducing.
Bees expressing VSH behavior can recognize signs associated with reproducing mites inside capped brood cells.
Worker bees may uncap those cells and remove the developing bee, disrupting the mite's reproductive cycle.
This behavior can reduce the number of successfully reproducing mites in a colony.
One important distinction is that VSH bees do not simply attack and kill Varroa mites crawling around the hive. Their primary defense involves identifying and responding to mite reproduction inside brood cells.
š Why Cross Golden West With Pol-Line VSH?
The purpose of combining these breeding lines is to bring together desirable production traits and improved mite resistance.
Ideally, the resulting colonies will demonstrate:
Gentle behavior during hive inspections.
ā¢ Strong colony development and population growth.
ā¢ Good honey-producing potential.
ā¢ Increased expression of hygienic behavior.
ā¢ Reduced reproductive success of Varroa mites.
However, genetics are not guarantees. Individual colonies can vary, and the degree of VSH expression depends on inheritance and breeding practices.
š Does This Mean These Bees Don't Need Mite Treatments?
No. This is probably the most important thing for beekeepers to understand.
VSH genetics can help colonies suppress Varroa reproduction, but they do not make bees immune to mites or the viruses mites transmit.
Even colonies with strong VSH characteristics can develop dangerous mite populations, particularly when mites enter from neighboring colonies or when environmental conditions favor rapid mite reproduction.
Regular mite monitoring remains essential. Alcohol washes or other validated monitoring methods help beekeepers determine actual infestation levels rather than relying on genetics alone.
š Why Is This Important for the Future of Beekeeping?
For decades, beekeepers have relied heavily on chemical and organic treatments to control Varroa mites. While these treatments remain important, resistance to certain miticides and inconsistent treatment effectiveness have created additional challenges.
Selective breeding offers another tool.
Instead of relying exclusively on treatments, researchers and breeders are working to develop honey bees that possess inherited behaviors capable of helping them defend their colonies.
Golden West Ć Pol-Line VSH bees are an example of combining productive honey bee genetics with traits intended to improve resistance to one of beekeeping's most persistent threats.
The goal isn't to create a mite-proof honey bee. It's to develop healthier, more resilient colonies that have an additional natural defense against Varroa mites.
š KC Bee Lady | Belton, Missouri
