Do all swarms have mated queens?
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The answer is yes and no. First, we must define our term “swarm” to help us get the right answer. If we are talking about the very first “primary” swarm of the season from a colony then we can be fairly confident that this swarm has our last year’s mated queen. This swarm is often the largest and so is more easily recognized. In addition, you should see the queen laying eggs within her first week in your trap or hive.
If this is a secondary swarm or “cast” it likely will have a virgin queen. These tend to be smaller. Sometimes it’s just the size of a softball. These “after-swarms” can happen later in the spring or swarming season in your area. Also, since the virgin queen must get mated it may take longer for her to lay eggs causing the beekeeper to wonder if there is a queen at all. Secondaries require a little more patience and assistance such as an extra shake of bees to keep the colony strong and giving her time to begin laying…if she returns from mating at all. Mating is always a chancing situation where failure could leave her colony without the ability to create more swarm cells and eventually die.
In summary, while “swarms” can have mated queens, it is also common for later “swarms” to be accompanied by virgin queens based on whether it’s a primary or secondary swarm. This reproductive strategy is essential for the survival and expansion of honey bee populations over the whole season.
What if you have multiple queens emerging in a colony?
The presence of an emerging virgin queen can trigger swarming behavior in honey bees, as she may emerge and leave with a portion of the colony, while the remaining bees prepare to raise new queens from existing cells or begin creating new ones. Remember that the colony desires to spread their genetics and will likely continue creating queen cells if they can, given the right balance of size, resources, and eggs of the right age. This process often leads to the original colony producing multiple swarms if several virgin queens are allowed to emerge one after the other by the colony.
What factors influence whether a virgin queen gets mated?
Several factors influence whether a virgin queen gets mated including weather conditions, the availability and quality of drones, and the genetic health of the bees. Weather plays a significant role, as low temperatures, cloudy skies, and strong winds can reduce the likelihood of successful mating flights. Additionally, the presence of healthy, genetically diverse drones within a 1-kilometer radius of the mating apiary is crucial for successful mating. Varroa mite infestations and associated viruses can reduce drone fitness, while certain chemical treatments may damage their sperm, further impacting mating success.