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Queen Replacement - When and How to Introduce a New Queen to the Colony

Queen bee replacement is one of the most important procedures in beekeeping management, determining the colony’s strength, health, and honey yield. Although queens can live up to 5 years, their biological efficiency drastically declines after the second year of life, manifested by a decrease in the number of eggs laid or the appearance of drone brood due to the depletion of sperm reserves. From the perspective of the biology of the superorganism that is a bee colony, this process represents a necessity for genetic renewal and the preservation of generational continuity.

When to Replace the Queen? Strategy and Biology

The decision to replace a queen should be dictated by her age, health condition, or low fecundity. The most optimal time in temperate climate conditions is the end of May and the beginning of June, allowing the new queen to develop full brood-rearing capacity before the main nectar flows.

  • Before the main nectar flow: Replacing with a laying queen helps avoid a break in colony development. Using an unmated queen or a queen cell just before the flow forces a break in egg-laying, which limits the number of larvae to feed and allows bees to focus solely on nectar collection.
  • In August and September: This is a crucial time to introduce young queens, which will continue laying longer into autumn, ensuring a large number of young, strong bees for wintering.
  • In emergency situations: Such as the sudden loss of a queen or the detection of laying workers, which requires immediate intervention.

Factors Determining the Success of Queen Introduction

The acceptance of a new queen depends on the physiological state of the colony and external conditions. Bees most readily accept mated queens that have not had a break in egg-laying.

  1. Age structure: Young bees (non-flying) are significantly less aggressive towards foreign queens than old bees.
  2. State of queenlessness: A colony best accepts a new queen between 3 and 6 hours after the old one is removed, before the bees have time to build emergency queen cells.
  3. Presence of a nectar flow: Lack of incoming nectar increases aggression; during such periods, it is necessary to feed the colony with syrup for 2-3 days before the procedure.
  4. Cleanliness of the brood nest: Before introduction, all emergency queen cells must be absolutely removed.

Methods for Introducing Queens

1. Indirect Methods (Using Isolators)

These are the safest techniques, protecting the queen from direct attack by bees until pheromonal scents are equalized.

A. Introduction in a Cage (e.g., Titov cage or mailing cage):

  • Step 1: Find and remove the old queen.
  • Step 2: Place the new queen in the cage between frames with the youngest brood, in the center of the brood nest.
  • Step 3: After 12–24 hours, check the bees’ reaction. If they are sitting loosely on the cage and trying to feed the queen, open the exit and secure it with a thin layer of foundation or candy.
  • Step 4: If the bees form a tight, aggressive cluster (“ball”) on the cage, the queen must not be released – check if another queen or queen cells remain in the hive.

B. Method under a Cap (screen):

  • Step 1: Choose a comb with honey and emerging brood, which has empty cells.
  • Step 2: Release the queen onto the comb and cover her with the cap, pressing its edges into the wax.
  • Step 3: The queen under the cap begins to lay eggs, stimulating the bees to care for her.
  • Step 4: After 24 hours, when the queen has started working, remove the cap.

2. Direct Methods (For Experienced Beekeepers)

Used mainly during abundant nectar flows when bees are less aggressive.

A. “On the Hand” Method (using honey):

  • Step 1: Remove the old queen in the evening.
  • Step 2: After 4–5 hours, lightly dip the new queen in honey (or smear some on your hand) and direct her straight into the entrance or onto a comb. Bees licking honey off the queen promotes her acceptance.

B. “Bathing” Method in Water:

  • Step 1: Dip the queen in a glass of lukewarm, clean water and gently “bathe” her until she becomes less active.
  • Step 2: Place the wet queen on a comb or release her into the entrance of the queenless colony, releasing 2–3 puffs of smoke after her.

3. Introduction via a Nucleus Colony (The Most Reliable Method)

Recommended when introducing very expensive or valuable breeding queens.

  • Step 1: Create a small nucleus colony on 2–3 frames with sealed brood (without flying bees).
  • Step 2: Introduce the queen to the nucleus (she will be accepted almost 100% by the young bees).
  • Step 3: When the queen begins laying regularly, combine the nucleus with the main colony after first removing its old queen, using the newspaper method to equalize scents.

Expert Summary

The choice of method should be adapted to the value of the queen and the temperament of the bees. Remember that every hive inspection after queen introduction is a risk – it is recommended to check for acceptance no earlier than after 3–4 days, by observing the presence of fresh eggs. In the case of colonies with laying workers, the only effective method is to starve them for 2-3 days before introducing the new queen or to combine them with a strong colony that has a laying queen.

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