Testing my bees for Hygienic Behaviour
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- Опубликовано: 8 сен 2024
- This is a re-upload from the summer. When I first put this video up, literally every comment had a complaint about the audio levels, so now it's as good as it's going to get.
HUGE THANK YOU to OBA TTP staff Mel and Dan for answering questions on camera and Jade for coming out and working too.
This video briefly shows the process we go through in order to test our bees for hygienic behaviour. This is the liquid nitrogen freeze kill method of hygienic testing. I like to select for hygienic behaviour as a form of resistance to American Foulbrood disease, and other brood diseases.
Follow me on instagram @devan.beekeeper
Please don't ask to buy queens from me in the comments section.
Music by Andrew Applepie
The audio is fine. If anybody continues to complain about it, they must be more interested in the video production quality than the actual content.
Thanks. To be fair it wasn't great the first time around, depending on what device you were listening/watching on.
Hi Devran, I watched your single brood box video and then this one and subscribed. I like how you make your point then demostrate what you are doing. Sound and video quality is good. Keep them coming. Hobby bee keeper here in suburban north Carolina. Thanks!
Keep the videos coming! Love the logic you use in the videos and the way you are presenting them. Everyone can tell you have a lot of education and experience in the field. I am very interested in a “you” video with where you are today and how you got to where you are and your hopes and dreams for the next 10, 20, 30, 40, 50 years!
I second that, would love to hear how you got to where you are and you're plans for the future growth of you're bees.
Thanks
bees: *exist*
devan: _so you have chosen death_
U did great I enjoyed the video, there is always someone that has to be gripping about something do not worry about it. thanks and Merry Christmas keep the videos coming
Very interesting! Thanks for sharing.
Hi Devon
They said on the video, that the sealed brood was chosen when they have pink eyes rather than darker. Can you tell us why this is the preferred age of the lava
Thx
Great question. As the pupae get older, there is a chance they will actually survive the liquid nitrogen freezing. Then the workers in the colony would not remove that brood and it would be recorded as a false negative in the test. For that reason when we record the results we typically uncap any cells that remain capped just to verify that the pupae were not too old. If they were too old, they could be counted and those numbers could be removed from the results.
Hey Devon, can you tell me where you get your hat and veil? Also that super cool hive tool holder too?
In Norwegian, we call the different foulbroods "open" and "closed." I can never keep straight which one is American and which is European.
Very Interesting. With European foulbrood the larvae always die before pupating, so the cells almost never become capped. My guess is that one would be referred to as "open" for that reason, but I really don't know.
That's it exactly. Fortunately, foulbrood is just about nonexistent in Norway, and the affected areas are strictly quarantined.
Your numbers should go up soon. Keep it up
Love the video.can you tell me about your bottom boards
I enjoy your informative videos. All good in Canada?
yep, all good, thanks.
👍🏻
I wonder if the same thing could be accomplished with crushed ice and solo cups of the correct diameter? i think the liquid nitrogen may be slight overkill. just my 2 cents
Hey, this definitely won't work with crushed ice. In fact the, liquid nitrogen application has to be done twice, in a pretty specific way to make sure all the pupae are killed. As pupae start to age they become quite tough, and this method works on white-pink eyed pupae but once they start to develop an exoskeleton they can survive the dose of liquid nitrogen.
There are methods where a cut section of brood is taken away and put in a freezer, then returned to the hive. In that case I think the brood is frozen for something like 24 hours, but you'd have to look up that method somewhere.
The test isn't worth doing unless you do it consistently and accurately. It's really not something for 95% of beekeepers to even worry about, only if you're interested in a real breeding program.
Curious to know where you get that style hat/veil?
Hi Devan, I was wondering when I sometimes use Mite Away Quick Strips and sometimes the colonies suffers brood loss and the bee's remove the dead larve could that be considered hygienic behavior? Or would hygienic behavior only be when the bee's remove diseased brood? Suppose my question would be if the bee's remove dead bee's and larve from mite treatment loss, would they also remove diseased brood and capped brood cells that contain Varroa? Thanks Devan and for all of your HELPFUL video's!
All bees will remove dead brood from their colony. The point of performing a test is to quantify it, identify variability in your colonies, and select the best ones for future generations. Dead or diseased, it doesn't really matter, some colonies will be better at it than others. Just observing what happens after a potent formic acid treatment isn't going to be a very accurate way of understanding that behaviour.
@@DevanRawn Thank you!
How much nitrogen it takes for one test? Whether you're pour certain amount (measured) or just in the course of time?
Why 3 or 4 freeze on one frame when 1 freeze ought to demonstrate good hygiene ?
Do you treat for anything other than mites?
How many hives do you operate?
wow
how much did it cost you ?
music is way too loud..
Please go back to making videos.