Results 1 to 4 of 4
  1. #1
    Join Date
    May 2009
    Location
    Canterbry, UK
    Posts
    1,663

    Default Up To Date SMR/VHS Info

    I thought it might be useful to have a dedicated SMR/VSH thread, and am starting it off with links to some recently dated dated documents outlining the potential and issues.

    The short story (from the last paper) seems to be that evaluating for VSH isn't easy - looking for recapping and pinholes seems the best route short of making dedicated tests with varroa laden frames of brood of the right age.

    A further line of attack comes from work in the UK that uses dna testing to evaluate virgin queens (from known VSH stocks) to improve rates of transmission which will otherwise vary due to (off) matings. (Intracolony selection) It seems likely there is a service in the UK or Europe (BFA) but I haven't run it to ground yet.

    Mike (UK)

    Recent VHS Info

    Varroa Sensitive Hygiene and Mite Reproduction
    Page authors: Jeffrey Harris, Robert Danka and José Villa, USDA-ARS
    Bee Health December 13, 2013
    http://www.extension.org/pages/30361...n#.UuoVQCtK9Ug

    Selecting for Varroa Sensitive Hygiene
    Page authors: Jeffrey Harris, Robert Danka and José Villa, USDA-ARS
    Bee Health November 12, 2010
    http://www.extension.org/pages/30984...e#.UuoWhytK9Ug

    (From last)
    For more on selection methods for VSH, see the following publication via the open access link.
    2009. Simplified methods of evaluating colonies for levels of Varroa Sensitive Hygiene (VSH).
    Villa, J. D., Danka, R. G., and Harris, J. W. 2009.
    Journal of apicultural research. v. 48, no. 3, p. 162-167. http://hdl.handle.net/10113/32517
    (Direct link: http://naldc.nal.usda.gov/download/32517/PDF )
    Anti-husbandry: Medication + Reproduction = Continuing Sickness
    http://www.suttonjoinery.co.uk/CCD/

  2. #2
    Join Date
    Mar 2010
    Location
    Walker, Alabama, USA
    Posts
    915

    Default Re: Up To Date SMR/VHS Info

    Additionally, join vshbreeders.org. Bob Danka, Adam Finkelstein, and others have answered my questions over there.

    HTH

    Rusty
    Rusty Hills Farm -- home of AQHA A Rusty Zipper & Rusty's Bees ( LC and T)

  3. #3
    Join Date
    Jan 2009
    Location
    Grosse Ile, Michigan, USA
    Posts
    2,896

    Default Re: Up To Date SMR/VHS Info

    Interesting how the vsh bees don't exhibit as much hygenic behavior towards the drone brood as they do the worker, and the drones supposedly are more preferable to mites. On the other hand, maybe it is better that way because the larger percentage, or total of mites, are in the worker brood because there is much more of it in the hive compared to drone.

  4. #4
    Join Date
    May 2009
    Location
    Canterbry, UK
    Posts
    1,663

    Default Re: Up To Date SMR/VHS Info

    Quote Originally Posted by jmgi View Post
    Interesting how the vsh bees don't exhibit as much hygenic behavior towards the drone brood as they do the worker, and the drones supposedly are more preferable to mites. On the other hand, maybe it is better that way because the larger percentage, or total of mites, are in the worker brood because there is much more of it in the hive compared to drone.
    My theory is... its an evolved mechanism that reduces the male side genetic output. From the point of view of a local population it is better if bees that are suffering the predations of mites do not replicate their genes as strongly as those that have no mites.

    I'm not sure that pans out in every detail...

    Mike (UK)
    Anti-husbandry: Medication + Reproduction = Continuing Sickness
    http://www.suttonjoinery.co.uk/CCD/

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Ads