Some paraphrases and excerpts.
Epigenetics more important than genetics. It's how the genes are expressed. Queens and workers wildly different, but genetically identical.
What your grandparents experienced affects your expression of genes.
If a parent colony is exposed to a parasite, the next generation is better prepared for it.
You get different bees every years, much faster than breeding for bees. Have to get away from line-breeding.
Can reconstitute genome from previous generation from just a handful of survivors, dependent on how fast the population re-expands.
The hive is a team effort, a colony has a lot of parents.
The feral population maintains its genetic integrity no matter the domestic population around it.
It's easy to breed bees in a few generations resistant to a parasite. The question is the cost.
Resistance will go away if constant pressure is not maintained.
Treating selects for the bees with the weakest immune system because the parasites are suppressed.
Don't have to breed for anything, just stop supporting the ones that aren't resistant.
Quotes another guy: 'Nothing should go into a beehive except for queens.'
Many traits responsible for overall resistance.
Varroa didn't become a problem until the first mite started laying eggs in worker brood. It read the change in pheromones from the workers that they only normally read from the drones.
Need to change definitive host back to being drone brood.
Pupae left without capping dehydrates the mites, possibly to stop varroa males from reproducing.
Bees are specifically adapted genetically for their location and altitude. We want different bees for migratory and stationary operations.
Breed for a population that's adapted so all the parts work together. Focus on a population. Use dozens of breeders rather than one.
Starting with the right stock saves you years of work. Introduce new stocks in drone mothers rather than as breeder queens.
Thoughts and comparisons:
Michael Bush talks about how a better fed queen can be better than a better bred queen. Demonstrates effect of epigenetics.
You can't 'help the bees.' People keeping bees to 'help the bees that are dying' are at the very best doing absolutely nothing and having no effect whatsoever.
My bees show the trait of shutting down brooding when appropriate, eliminating breeding potential for the mites for a time. Not a good trait for migratory pollination, but I'm not doing migratory pollination.
Explains why I lost so many hives when I moved and once there were a few supersedures, they began to thrive again. It is far too short a time to have made any large genetic change, but epigenetics can be expressed in the very next generation.
Newbee failure rate could be explained by a number of factors, one of which is that generally, the hive they get is far from local, putting it in an immediate disadvantage. Buy local, buy treatment-free, or you take a very big risk of simply wasting your time and money and emotional investiture as the case may be.
His bees have to make money, so he can't just let them die. A good application for the commercial realm. Hobbyists and commercial are different entities and should be treated as such.
Neither he or I care why or how the bees are doing the job, just as long as they do the job. That's why I don't test for VSH or anything else. I could probably do myself some good testing for mites, but I figure if a hive can do well with a massive mite load, so much the better. It's the result I want. The intermediate steps are far less important.
Reinforces what I've been saying about how backyard and hobbyist beekeepers should not be emulating commercial beekeepers. Commercial beekeepers obviously don't emulate hobbyists. Mr. Oliver is saying that they should even use different queens, bred for different purposes. I'd say a migratory beekeeper should use queens bred from migratory stock, but I don't know of many migratory queen breeders, usually the breeding operation stays put. Russell does carry a line of queens sourced from migratory operations.
Listen to the audio and share your conclusions. Let's not argue over each other's conclusions, just share your own please.