- Joined
- Jan 13, 2015
- Messages
- 7,639
- Reaction score
- 669
- Location
- Bedfordshire, England
- Hive Type
- Langstroth
- Number of Hives
- Quite a few
Thanks, your link has answered quite a few questions I was thinking about, and one obvious one; what type of pin!
https://www.amazon.co.uk/Hemobllo-S...+pin&qid=1551999752&s=gateway&sr=8-2-fkmrnull
You need a 10*10 cell trapezoid to use as a guide.
Locate an area of comb with solid sealed brood. Place the guide over the comb and uncap a few cells around the guide. If they are not purple-eyed pupa, locate another comb or wait a few days.Mark the start and end position with a highlighter to help you reposition the guide. Also mark the frame top so you know which frame it was.
Pierce the centre of each cell, going down to the midrib. If the cell has anything in it, empty it. When you have pierced 50 cells, mark the position with a highlighter.
8-12 hours later count the number of emptied cells (Opened is now thought to be better correlated with hygienic behaviour). Since you pierced 50 cells, you need to multiply this by 2 to get a hygienic figure that is out of 100.
A hygienic colony clears >75% in 8 hours. I wouldn't consider testing a colony with less than 90% for VSH
Use a number 2 entomology pin (http://www.entosphinx.cz/en/entomol...icke-spendliky-nerezove-c000-delka-38-mm.html ). Your link is perfect too.
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