A conversation today with Chat GPT:
Bees Naturally: Can the colours, or lack thereof, of the honeybees' segmented abdomen tell us anything?
ChatGPT: Yes, the colours and patterns on a honeybee’s segmented abdomen can tell us several things, including species identification, genetic lineage, health status, and environmental adaptations. Here’s what they can indicate:
1. Species Identification
- Different honeybee species and subspecies (races) have distinct abdominal colour patterns:
- Apis mellifera mellifera (European dark bee) – dark brown to black with minimal banding.
- Apis mellifera ligustica (Italian bee) – golden-yellow with clear black bands.
- Apis mellifera carnica (Carniolan bee) – dark brown-grey with subtle banding.
- Apis mellifera scutellata (Africanized bee) – smaller, with bright golden to dark brown banding.
2. Hybridisation & Genetic Lineage
- Crossbreeding between subspecies can produce intermediate colouration.
- Some strains selectively bred for gentleness or productivity exhibit specific markings.
- Darker bees tend to be more cold-hardy, while lighter-coloured bees are often adapted to warmer climates.
3. Age of the Bee
- Newly emerged bees tend to have fuzzier, duller, and slightly greyer abdomens.
- Older foragers may show more polished and worn exoskeletons, with fading or darkening colours.
4. Health & Disease Indicators
- A darkened, greasy-looking abdomen can be a sign of viral infections like Chronic Bee Paralysis Virus (CBPV).
- Distorted or deformed bands might indicate pesticide exposure or genetic mutations.
- Unusually pale bees could suggest nutritional deficiencies during development.
5. Environmental Adaptations
- Bees in colder climates tend to have darker abdomens to absorb more heat.
- Lighter-coloured bees may be better suited to warm climates as they reflect more heat.
- Local adaptations sometimes create unique regional colour variations within a subspecies.
Would you like help identifying a specific bee type from its markings?
Bees Naturally: My bees have changed over the years as the feral population has developed resistance to the varroa parasite by natural selection. Some are entirely black, while some have just one brown band at the top (next to the thorax). Can you read anything from that?
ChatGPT: Yes, the colour variations you're seeing in your bees—ranging from entirely black to those with just a single brown band near the thorax—can tell us quite a bit about the genetic shifts occurring in your local feral population. Here’s what it might indicate:
1. Increasing Influence of Apis mellifera mellifera (European Dark Bee)
- The all-black bees suggest a strong presence of A. m. mellifera genes, which are known for their dark colouration.
- This subspecies was historically common in the UK before imported strains (Italian, Carniolan, Buckfast) diluted the population.
- The resurgence of darker bees could mean that feral colonies are trending back towards these hardy, locally adapted genetics.
2. Natural Selection for Varroa Resistance
- If these darker bees have become dominant in your area, it suggests they have traits that confer better survival against Varroa destructor and associated viruses.
- Some studies suggest darker bees might have a stronger grooming instinct and heightened hygienic behaviour—key traits in resisting varroa.
- The persistence of some bees with a brown band near the thorax could mean there's still genetic mixing with other strains (possibly Carniolan or hybrid Buckfast lines).
3. Environmental Selection Pressures
- Darker bees tend to absorb more heat, which can be an advantage in cooler climates. This could help them thrive in the UK’s variable weather.
- If the feral bees are outcompeting lighter-coloured ones, it might suggest darker bees are better suited to surviving with less beekeeper intervention.
4. Hybridisation & Stabilisation of a Local Strain
- The single brown band suggests a mix of lineages but with strong selective pressure favouring the darker bees.
- Over time, if selection continues, you might see a further shift towards entirely black bees, or the population could stabilise with this mix of traits.
5. Potential Resistance to Other Stressors
- The selective pressures that favour varroa-resistant bees might also be shaping resistance to viruses and other environmental threats like pesticides.
- If these bees are thriving without treatment, their genetics could be valuable for breeding resistant stock.
It sounds like you're witnessing a fascinating case of natural selection in action. Are you considering capturing swarms from this feral population to integrate into your managed colonies?
Bees Naturally: I already do! It’s all I’ve ever done!
ChatGPT: That’s fantastic—you’re essentially running a long-term natural selection experiment in real time! By only working with survivor stock from the local feral population, you're letting natural selection do the hard work of filtering out weak genetics while preserving strong, locally adapted traits.
Your approach means that:
- Your bees are evolving alongside local environmental pressures, including varroa, climate, and forage availability.
- You’re likely seeing a stabilisation of a varroa-resistant strain, where the darker bees dominate because they have the traits needed for survival.
- Your stock is uniquely suited to your area, which is something no imported queen can guarantee.
Have you noticed any trends in temperament over time? Some resistant lines (like the Primorsky-derived "Russian" bees) tend to be more defensive, while others remain gentle. If your stock is maintaining good behaviour while also thriving, you’ve hit the jackpot!
Bees Naturally: About one in 15, I’d say, was markedly defensive. I haven’t spotted any colour correlations (but haven’t been looking).
ChatGPT: That’s a pretty good ratio—about 1 in 15 being defensive suggests that while some more aggressive genetics persist, they’re not dominating your population. If you haven’t seen a colour correlation yet, it might be worth keeping an eye on. In some populations, darker bees have been linked to a more defensive tendency (e.g.,
A. m. mellifera and some feral strains), while others remain gentle.
Since you're only working with survivor stock, those defensive bees might have strong varroa resistance or other beneficial traits. Do you actively cull aggressive colonies, or do you let natural selection take its course? If you selectively requeen or split from gentler hives while allowing the aggressive ones to phase out, you might be able to shift the population toward a more manageable temperament without sacrificing resistance.
Bees Naturally: The more defensive ones have larger yields—that's something I have noticed. I wouldn't want to interfere with my local population genetics by culling them.
ChatGPT: That makes perfect sense—defensive colonies often outproduce gentler ones because they guard their stores more aggressively and may forage more vigorously. Since you’re letting natural selection shape your local population, culling would disrupt that process.
Instead, it might be worth managing their placement—keeping the more defensive hives in outyards where they have minimal human interaction while allowing their genetics to contribute to the overall population. You could also track whether their aggression fluctuates with environmental conditions (e.g., nectar flow, season, queen age).
It sounds like your approach is creating a resilient, high-yielding strain perfectly suited to your area. Have you considered documenting their traits over the years to see how they continue evolving?