Queen Introduction and Acceptance

Article

While common practice, introducing a queen does not guarantee her acceptance. The outcome depends on several factors, including the colony’s condition, the presence of brood, worker behavior, the type of queen introduced, and the method used.

Understanding these factors allows the beekeeper to better prepare the operation, recognize signs of acceptance or rejection, and monitor the establishment of the new queen.

1. Why replace or introduce a queen?

There are various reasons for introducing a new queen into a colony.

Replacing an aging queen: A queen’s laying capacity and performance may change with age, though significant differences exist between individuals.

Brood issues: Irregular, insufficient, or exclusively drone brood may justify evaluating the queen and the colony’s overall condition.

Behavioral changes: The beekeeper may want to introduce a queen from a lineage with known traits, such as gentleness or lower swarming tendency.

Nucleus formation: A nucleus may receive a mated queen, a virgin queen, or a queen cell, depending on the chosen formation method.

Queen loss: A colony that has lost its queen may require intervention, especially if it no longer has suitable young brood to produce a replacement.

Selection and improvement: Introducing queens of known origin allows tracking traits in their offspring and comparing results over time.

The decision to replace a queen should be based on colony assessment and apiary goals, avoiding unnecessary interventions.

2. How do bees recognize their queen?

A colony’s organization depends on a complex set of chemical and behavioral signals.

The queen produces pheromones that play a role in the colony’s social communication and organization. Among these are components of the queen mandibular pheromone, which are associated with different worker responses.

These signals are distributed through contact between bees and help recognize the presence of a queen.

However, queen acceptance does not depend solely on pheromones.

The queen’s physiological state, her behavior, the population’s composition, the presence of brood, and the colony’s condition also influence worker response.

A queen from another colony presents a chemical and behavioral profile that may differ from what the workers are accustomed to.

For this reason, directly introducing an unfamiliar queen can provoke aggressive and rejection behaviors.

Introduction methods aim to reduce this risk by allowing gradual adaptation.

3. Assessing the colony before introduction

Before introducing a new queen, it is essential to understand the condition of the receiving colony.

Confirming the absence of a queen

The lack of eggs or young brood alone does not prove that a colony is queenless.

A queen may temporarily stop laying due to seasonal, nutritional, or physiological factors.

There may also be a virgin queen that has not yet mated.

Introducing a second queen into a colony that already has a queen can result in the rejection or death of the introduced queen.

Whenever there are doubts, the situation should be investigated before intervention.

Checking for queen cells

A queenless colony with eggs or young larvae can begin raising a new queen.

The presence of queen cells should be considered when choosing the introduction method.

A colony committed to raising its own queen may react differently to the introduction of an external queen.

Assessing the population

The quantity and composition of adult bees influence the colony’s ability to accept and support a new queen.

Small nuclei, strong colonies, and colonies with a high proportion of older bees may exhibit different behaviors.

Assessing reserves and health

A colony with food shortages, high disease pressure, or other stress factors may present less favorable conditions for introduction.

Before intervening, honey and pollen reserves, brood condition, and signs of disease or parasitism should be evaluated.

Introducing a queen alone does not resolve health or nutritional issues.

4. Mated queen or virgin queen?

The choice of queen type influences the procedure and monitoring timeline.

Mated queen

A mated queen has already completed her mating flights and, under normal conditions, can begin or resume laying after introduction.

The main advantages include:

• Less dependence on weather conditions for mating.
• Ability to observe brood within a relatively short time after acceptance.
• Reduced period without new brood production compared to introducing a virgin queen.

However, transport, confinement, and introduction conditions may cause temporary interruptions in laying.

A mated queen can also be rejected.

Virgin queen

A virgin queen has not yet completed her mating flights.

After introduction and acceptance, she requires maturation, favorable weather conditions, and the presence of mature drones to complete the reproductive process.

Introducing virgin queens may yield more variable results depending on the method and colony conditions.

The absence of brood in the first few days is normal but should be monitored within expected biological timeframes.

Mating may fail due to adverse weather, lack of drones, queen loss during flights, or other factors.

5. Main introduction methods

There is no single method that guarantees acceptance of all queens.

The choice depends on the queen type, the receiving colony, the beekeeper’s experience, and apiary conditions.

5.1. Introduction in a cage with gradual release

This is one of the most commonly used methods for introducing mated queens.

The queen is placed in a cage that allows workers to establish contact with her while keeping her temporarily protected.

Some cages use a passage blocked by sugary food, often called candy, which may allow gradual release.

The general process involves:

1. Confirming the condition of the receiving colony.
2. Preparing the introduction according to the chosen method.
3. Positioning the cage in a suitable area of the hive, usually near the brood.
4. Allowing contact between the queen and workers without immediate release.
5. Monitoring bee reaction and confirming release.
6. Later verifying the queen’s presence and the establishment of brood.

Release time depends on the cage type, food consistency, and colony behavior.

Release should not be automatically considered safe just because a certain number of hours have passed.

5.2. Manual release introduction

In some procedures, the queen remains protected during an adaptation period and is later released by the beekeeper.

This method allows observation of worker behavior before release.

However, it requires careful evaluation, as an apparently calm reaction does not guarantee definitive acceptance.

5.3. Introduction with a cage over emerging brood

Some methods use a cage placed over an area of capped brood close to emergence.

The queen remains protected while new workers emerge in the confined area.

The goal is to encourage contact between the queen and young workers, which may be more receptive.

The application requires appropriate equipment and attention to space, feeding, and queen safety conditions.

5.4. Introduction of a virgin queen

Virgin queens can be introduced using different procedures, including cages and other temporary protection methods.

Acceptance depends on factors such as the queen’s age, the colony’s condition, and the presence of other queens or queen cells.

After acceptance, the queen must be allowed to complete the mating process.

Monitoring should respect the natural timing of this process.

5.5. Introduction of a queen cell

Introducing a queen cell is an alternative to introducing an emerged queen.

The queen cell must be at an appropriate developmental stage for transfer.

Improper handling, exposure to unsuitable temperatures, or excessive vibrations can compromise the development of the future queen.

After emergence, the queen will need to complete her mating flights before beginning to lay eggs.

6. How long should a colony remain queenless?

The queenless period is one of the factors frequently considered when introducing queens.

After losing their queen, the colony begins responding to changes in the chemical signals associated with her presence.

This response does not occur instantly, nor is it identical across all colonies.

The time required to prepare for introduction varies depending on the method used.

Some procedures use relatively short queenless periods, while others require longer intervals or specific conditions.

There is no universally suitable number of hours for all introductions.

A queenless period that is too short may not produce the desired conditions for the method. An extended queenless period may encourage queen cell construction and, under certain circumstances, complicate later management.

The choice should consider the presence of young brood, the existence of queen cells, the type of queen, and the instructions associated with the procedure used.

7. How to recognize signs of acceptance or rejection?

Observing worker behavior near the cage can provide useful information, but it does not guarantee absolute certainty.

Potentially favorable signs

• Workers behaving relatively calmly near the cage.
• Contact with the queen without persistent attempts at aggression.
• Absence of aggressive clustering of bees on the cage.
• Subsequent presence of the queen moving freely in the hive.
• Establishment of normal egg-laying.

Signs of possible rejection

• Workers biting or attempting to sting the queen through the cage.
• Intense and persistent clustering of bees on the cage, hindering her movement.
• Attempts to immobilize the queen after release.
• Disappearance of the queen.
• Prolonged absence of brood when it would already be expected.

The formation of a ball of bees around the queen, often called balling, may be associated with aggression and attempts at elimination.

However, interpretation should consider the context and observed behavior.

The most relevant confirmation of a successful introduction is the establishment of a functional queen with adequate brood and subsequent colony development.

8. Monitoring after introduction

Introduction does not end with the queen’s release.

Monitoring should confirm her survival, acceptance, and reproductive capacity.

First phase: Release and survival

Check if the queen was released and if there are signs of rejection, respecting the procedure used.

Avoid opening the hive repeatedly without need, especially during sensitive phases.

Second phase: Start or resumption of laying

In a mated queen, brood may appear relatively soon after acceptance, though the interval varies.

In a virgin queen, maturation, mating flights, and the period until laying begins must be considered.

Third phase: Brood assessment

The presence of eggs demonstrates laying activity but is not sufficient to evaluate the queen’s overall quality.

It is important to observe over time:

• Regularity of the brood pattern.
• Presence of eggs and larvae.
• Development of capped brood.
• Population growth.
• Absence of signs suggesting reproductive or health issues.

Irregular brood patterns can have various causes, including nutritional limitations, health problems, or changes in cell availability.

The assessment should consider the colony as a whole.

9. What to do when introduction fails?

The absence of the queen or brood should not automatically lead to another introduction.

First, it is important to determine what happened.

The queen may have been rejected, disappeared during mating flights, not yet started laying, or be present but temporarily inactive.

There may also be queen cells or an unidentified virgin queen.

Depending on the situation, management options may include:

• Waiting and reassessing when biological timing justifies it.
• Introducing another queen after confirming the colony’s condition.
• Allowing the colony to raise a queen if suitable biological material and favorable conditions exist.
• Transferring resources from another colony while respecting health precautions.
• Merging the colony with another unit when independent recovery is not viable.

The choice should consider the time of year, existing population, reserves, health, and queen availability.

In colonies that remain queenless for extended periods, laying workers may appear, making recovery more complex.

10. The importance of queen origin and characteristics

A queen should not be evaluated solely on her ability to lay eggs.

Genetic origin and observed traits in parent colonies can provide relevant information for future monitoring.

Aspects that can be recorded include:

• Origin and identification of the queen.
• Birth or emergence date, when known.
• Mating or start of laying date, when known.
• Donor colony and lineage.
• Behavior and gentleness.
• Swarming tendency.
• Population development.
• Productivity.
• Hygienic behavior.
• Health observations.

It is important to distinguish traits observed directly in the queen or her donor colony from those that may appear in her offspring’s colonies.

A colony’s performance results from the interaction between genetics, environment, and management.

Therefore, a trait recorded in the donor colony does not guarantee it will manifest identically in the new colony.

11. What information should be recorded during introduction?

Maintaining a history helps understand results and compare different procedures.

This data helps distinguish a truly successful introduction from a situation where the queen was simply released.

It also allows identifying patterns associated with specific times, methods, or colony conditions.

12. Management and traceability in abelhas.eu

In abelhas.eu, queen management is linked to the Queen Rearing, Swarm Creation, and Hive Management modules.

The Queen Rearing module allows tracking queen development and recording information about her origin.

The queen’s digital passport compiles identification data and known characteristics of the donor colony, preserving relevant information for traceability.

In forming new swarms, the beekeeper can identify the method used and monitor the introduction of virgin or mated queens, whether of internal or external origin.

By correlating this information with inspections and the colony’s subsequent development, it becomes possible to evaluate results over time.

Augusto, the artificial intelligence assistant from abelhas.eu, can help consult and interpret available records, aiding in identifying situations that require monitoring.

The goal is to provide structured information to support the beekeeper’s decisions without imposing a specific queen-rearing or introduction method.

13. Conclusion

Introducing a queen is a biological and behavioral process that requires preparation, observation, and monitoring.

Success does not depend solely on the quality of the introduced queen but also on the condition of the receiving colony, the presence of other queens or queen cells, the method used, and the timing of the intervention.

A released queen is not necessarily an accepted queen. And an accepted queen can only be considered established when she demonstrates reproductive capacity and contributes to the colony’s development.

The goal is not just to introduce a queen but to establish a functional, healthy colony capable of sustainable growth.

References and sources

• Winston, M. L. (1987). The Biology of the Honey Bee. Harvard University Press.
• Laidlaw, H. H. & Page, R. E. (1997). Queen Rearing and Bee Breeding. Wicwas Press.
• Seeley, T. D. (1985). Honeybee Ecology: A Study of Adaptation in Social Life. Princeton University Press.
• Slessor, K. N., Winston, M. L. & Le Conte, Y. (2005). Pheromone communication in the honeybee (Apis mellifera L.). Journal of Chemical Ecology, 31, 2731–2745.
• COLOSS — BEEBOOK: Standard Methods for Apis mellifera Research. Journal of Apicultural Research.
• Direção-Geral de Alimentação e Veterinária (DGAV) — Information on bee health: https://www.dgav.pt

Note: This article is for informational purposes only. The choice of procedures should consider the conditions of the apiary, the health status of the colonies, and applicable technical recommendations.