OA dribble

[Eyeman]

I can understand that if you have lots of hives.
I have one colony that was still dropping considerable mites despite vaping seven times. I put Amitraz in and now have forgotten about them till spring.
I have two colonies that are dropping mites again six weeks after the first round of vaping finished (Lots dropped with the first two and very few with the third so I presumed it was successful).
I can see the attraction of Amitaz but I don't like the idea of what it is

Use your autumn OAV as a 'knock back' to get healthy winter bees. Save the 'knock down' for winter OAV when brood is minimal.

 

[mazzamazda]

Mark asked how long oxalic dribble was effective for.
I presumed he meant how long the solution kills mites for after application.
My answer, taken from Randy Oliver and LASI is three days.
AS soon as you apply the dribble it starts killing mites. It does that for three days after which it stops killing.

Thanks for the info

 

[mazzamazda]

I can understand that if you have lots of hives.
I have one colony that was still dropping considerable mites despite vaping seven times. I put Amitraz in and now have forgotten about them till spring.
I have two colonies that are dropping mites again six weeks after the first round of vaping finished (Lots dropped with the first two and very few with the third so I presumed it was successful).
I can see the attraction of Amitaz but I don't like the idea of what it is

To be honest it was an experiment and a rest from Amitraz.

You probably know but depending on the treatment its usually 30 days and you have to take the strips out as they can become resistant. I have seen only positives from Amitraz, for me it is a bee saver, most other treatments arent anywhere like effective or loads of work.

Do you do an alcohol wash?

 

[mazzamazda]

Not many of us want to use pesticides where food products are concerned

Nearly every food product you buy has had pesticides used

 

[linoleum bonypart]

Wonder how long before they are resistant to amitraz

 

[mazzamazda]

Wonder how long before they are resistant to amitraz

You can ask the same for any treatment

 

[linoleum bonypart]

Apart from OA

 

[mazzamazda]

Apart from OA

What makes you think they couldnt become resistant? OA isnt a silver bullet. Interesting article here.

http://scientificbeekeeping.com/oxalic-acid-questions-answers-and-more-questions-part-1-of-2-parts/

 

[Beefriendly]

The main reason why OA resistance is unlikely is that it works to inhibit several metabolic pathways. Most pesticides only require resistance at one point in their action to generate resistance. Treatments working at multiple points are less likely to have their targets develop resistance.
One of the effects of OA is it shuts down the citric acid cycle...which is essential for anyone...bee or man.

 

[Bakerbee]

Really interesting thread. So if you use amitraz or apitraz over winter. How do you go about knowing which honey is tainted by pesticide and which is new? By the time you harvest have the bees gone through all the honey that was exposed to the strips ? Im confused.

 

[AndyTh]

Dribbling works only in broodless hives. IT kills open brood. 80% out of mites are under cappings.

.

Finman, is there published evidence of what proportion of open brood is killed by dribbling OA? I've not seen any substantiation that at 3-5ml per seam, it kills 100% of open brood. Could it kill, say, only 20% of open brood? Do you know if any research studies that address this?

Also as broodnests contract into winter the number of capped cells decreases to very few (and also the proportion of capped brood relative to the population of adult workers diminishes). Can it always be true in broodnests in early spring, in summer and in late Autumn that 80% of a hive's total mite population is in capped cells? I'd have thought that 80% must be an oversimplification.

I'll bet someone, somewhere knows!

 

[Finman]

.
No one has said that dribbling kills 100% out of open brood.

That I know, that if something kills 20% of brood, that hive cannot get surplus honey.

..

 

[mazzamazda]

The main reason why OA resistance is unlikely is that it works to inhibit several metabolic pathways. Most pesticides only require resistance at one point in their action to generate resistance. Treatments working at multiple points are less likely to have their targets develop resistance.
One of the effects of OA is it shuts down the citric acid cycle...which is essential for anyone...bee or man.

I understand that, however something as successful as Varroa which has managed to get into just about every beehive in the world, do you think something as simple as OA will always get in its way?

 

[mazzamazda]

Really interesting thread. So if you use amitraz or apitraz over winter. How do you go about knowing which honey is tainted by pesticide and which is new? By the time you harvest have the bees gone through all the honey that was exposed to the strips ? Im confused.

http://scientificbeekeeping.com/amitraz-red-flags-or-red-herrings/

 

[Chriszog]

Is Amitraz the same as Apitraz I am getting confused!!!

 

[mazzamazda]

Is Amitraz the same as Apitraz I am getting confused!!!

Amitraz is the ingredient in Apitraz

 

[Chriszog]

Amitraz is the ingredient in Apitraz

Thanks

 

[For want of a better word]

Is Amitraz the same as Apitraz I am getting confused!!!

AKA Tactic

Mytten da

 

[Finman]

What makes you think they couldnt become resistant? OA isnt a silver bullet. Interesting article here.

]

When it happens, researchers will report about that. IT is same with thymol and formic acid. These have been main mite killers 15 years.

Thymol and formic acid are used when hives have brood.
.
.

 

[For want of a better word]

When it happens, researchers will report about that. IT is same with thymol and formic acid. These have been main mite killers 15 years.

Thymol and formic acid are used when hives have brood.
.
.

Read somewhere that the brood should be culled before the use of varoacides... or was that just drone brood?????????????????????????

Mytten da