Question; your video says to take the workers from CAPPED brood frames, the Iowa State/IPM video says to take bees from open brood - which one is correct?
Hello ! Yes it looks like you can find both ways on the internet. Virginia university says "Although procedures differ as to the number of worker bees to collect, 200 (±25) bees can be gathered by tapping a frame of primarily capped brood into a plastic container" and "Frames of capped brood are used because Varroa mites in the travelling stage are found to be most prevalent on nurse bees since they have frequent access to brood." (www.ento.vt.edu/the-bee-group-at-vt/beekeeping/mites2.html). When looking at the HBHC Varroa management guide, they do not mention if it should be open or capped brood. And on other references, I find "select a frame that has both open and capped brood" On a french institute it says "Take out a frame with open and closed brood containing larvae before capping" On another French institute : "Take a frame of open brood, preferably with L5 stage larvae before capping" So it looks that there is no absolute answer to this question, but we would tend to follow the capped brood or mixed brood direction. Hope that helps!
Question; your video says to take the workers from CAPPED brood frames, the Iowa State/IPM video says to take bees from open brood - which one is correct?
Hello ! Yes it looks like you can find both ways on the internet.
Virginia university says "Although procedures differ as to the number of worker bees to collect, 200 (±25) bees can be gathered by tapping a frame of primarily capped brood into a plastic container" and "Frames of capped brood are used because Varroa mites in the travelling stage are found to be most prevalent on nurse bees since they have frequent access to brood." (www.ento.vt.edu/the-bee-group-at-vt/beekeeping/mites2.html).
When looking at the HBHC Varroa management guide, they do not mention if it should be open or capped brood.
And on other references, I find "select a frame that has both open and capped brood"
On a french institute it says "Take out a frame with open and closed brood containing larvae before capping"
On another French institute : "Take a frame of open brood, preferably with L5 stage larvae before capping"
So it looks that there is no absolute answer to this question, but we would tend to follow the capped brood or mixed brood direction. Hope that helps!
@@veto-pharma4700 Thanks
Thanks for the demo! Next time you should try the BeeScaning app and find the mites with your camera and AI! Works great!