RE: [beekeeping] VARROA MITE SUGAR ROLL
- Thanks for the clear, simple statement of the method. For those not familiar with varroa mite testing, I'll expand a bit...This method can be effective where varroa is known to exist in fairly high numbers, but is not nearly as sensitive as using a sticky board with Apistan for 24 hours or formic for 48.Where mites are not known to exist at all, and only a few hives are being checked, the ether roll and the sugar roll are relatively insensitive, since only 100 adult bees are sampled from a hive. I am uncertain how either compares with the alcohol wash (which uses 300 bees/hive).Of course larger samples can be done with sugar, and in our operation, we use about 1/4 of the quart mason jar full rather than 100 bees. As an idea of how insensitive it can be, we have tested 15 yards with four samples per yard and only found two mites. Both were from one yard. We have not treated this year.Any such test only measures mites that are on adult bees, Consideration must be made for the season and the amount of brood present to get a true idea the actual mite load in a colony. In fall and winter, the tests are much more sensitive, since many more mites are on the adults compared to the brood.I'm including below a one day output of BEE-L' s index that deals with the subject. Other recent BEE-L posts have dealt with the matter in much detail and might be of interest.The below info is what you get if you subscribe to BEE-L using the 'INDEX' option.There is also a varroa and formic acid resource page at http://www.internode.net/HoneyBee/ . It is a bit out-of-date, but a good starting point.allen--------
BEE-L Index - 23 Aug 2000 to 24 Aug 2000 (#2000-36)
Index Date Lines Subject and poster 032684 08/23 21 irradiation for foulbrood
From: Adony Melathopoulos <MelathopoulosA@...>
032685 08/23 18 Re: FW: radiation for AFB
From: Walter Patton <hihoney@...>
032686 08/23 17 Re: Stings and local reactions
From: Bill Gantt <Wdgsr001@...>
032687 08/23 32 Re: Stings and local reactions
From: Eugene Makovec <e_makovec@...>
032688 08/23 1 Re: Varroa Sugar Roll Test
From: Frank Nally <Modem@...>
032689 08/23 37 Re: Varroa Sugar Roll Test
From: Allen Dick <allend@...>
032690 08/24 29 Re: Stings and local reactions
From: MIDCPRO <midcpro@...>
032691 08/24 48 Re: Stings and local reactions
From: "Lear, Eddy(ENL)" <edmund.lear@...>
032692 08/24 27 Re: radiation for AFB
From: Aaron Morris <AMorris@...>
032693 08/24 13 NY Pesticide law passed
From: John Mitchell <JMitc1014@...>
032694 08/24 14 Re: Stings and local reactions
From: Richard Spiekhout <RASpiek@...>
032695 08/24 29 Sugar roll & other powders
From: Dave Cushman <dave.cushman@...>
032696 08/24 34 Re: thymol and Apiguard
From: Joe Hemmens <joe@...>
032697 08/24 16 Beekeepers to be inspected
From: stimey <stimey@...>
032698 08/24 12 West Nile discovered in central new york.
From: stimey <stimey@...>
032699 08/24 20 Re: Stings and local reactions
From: Barry Birkey <barry@...>
032700 08/25 17 I need a job
From: edgar diaz <edgardiaz@...>
032701 08/24 13 Re: West Nile discovered in central new york.
032702 08/24 13 Re: stings and local reactions
From: Ted Hancock <haymedhon@...>
032703 08/24 11 Re: How many queens?
From: James Kilty <honeymountain@...>
032704 08/24 9 hive stands
From: albert cannon <albert.cannon@...>
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This method has proven most effective, is easy to use and does not
kill bees. I never liked the idea of killing bees.