Karin Alton(LASI) recommends vaping now

[Malifex]

LASI have a video clip...pretty basic and with a few omissions (like not using soapy water to dislodge the phoretic mites being washed off).. but, on the whole its not too bad (if only they wouldn't keep claiming that they have found things that other researchers published years ago).


The only research referred to in the video clip is that they found varroa 13 times higher in drone cells than worker cells. It doesn't claim they were the first to find it.

I expect the reason why it doesn't mention soapy water, is that soap isn't necessary to dislodge the varroa.

 

[Finman]

The only research referred to in the video clip is that they found varroa 13 times higher in drone cells than worker cells. It doesn't claim they were the first to find it. .

It was reported really long time ago, that mites like more dark worker cells than new drone cells.

I think that Lasi material is mostly for the beekeeping students of university.

When a researcher makes efficacy measuring, and statistic data, he needs that kind if standard accurate methods. An ordinary beekeeper does not need those.

That was quite a fault, that Lasi measured trickling efficacy after 2 weeks of treatment. They got 50% efficacy.

I have never seen such results. They are almost over 90% efficacy. Why alarm bells did not fing, when they compared other researchers' results.
And trickling researchings have been made thousands during 15 years.

They will not any scientific innovations from these, but they perhaps show, that they are alive and they work.


And an university informs, when to treat mites. That is odd.
That has been known everywhere 15 years.

 

[Hivemaker.]

An ordinary beekeeper does not need those.

Well I do.

That was quite a fault, that Lasi measured trickling efficacy after 2 weeks of treatment. They got 50% efficacy.

Nonsense.

 

[Finman]

Well I do.



Nonsense.

Nonsense to you. You are professional beekeeper and queen breeder.

When two hive owner calculate his mites, he kills them 10 time at same time without calculating..


It is easier to kill 100 mites than wait that they 1000.

.

 

[Finman]

Well I do.

Originally Posted by Finman View Post
That was quite a fault, that Lasi measured trickling efficacy after 2 weeks of treatment. They got 50% efficacy.

Nonsense.

.

If you think so, it is totally your fault.

When did you have met 50% efficacy in trickling researches?

 

[Hivemaker.]

When did you have met 50% efficacy in trickling researches?

The only 50% efficiency with regards to this research is in your imagination

 

[Finman]

The only 50% efficiency with regards to this research is in your imagination

It was 57%. Old branes you know. 10% error

All three methods could give high varroa mortality, c. 93–95%, using 2.25 g OA per colony. However, sublimation was superior as it gave higher mortality at lower doses (.56 or 1.125 g per colony: trickling 20, 57% mortality; spraying 25, 86%; sublimation 81, 97%.)

As you see, it is not even said the recipe, what kind of solution they gove to hives. It depends on size of hives how much you give stuff.



We stopped counting fallen mites after 10 days, as by then the number had been at low levels, less than three mites per day

 

[Finman]

.
Those testa have been bublished 10 years ago. And the varroa control Project started 1998.

https://hal.archives-ouvertes.fr/hal-00892183/documen.



Here is again, what European Union Varroa Group bublished 2006

http://www-temp.agroscope.admin.ch/imkerei/00316/00329/04435/index.html?lang=en

.

 

[Hivemaker.]

. Old branes you know.
As you see, it is not even said the recipe, what kind of solution they gove to hives. It depends on size of hives how much you give stuff.

Old brains and not actually reading the research.

We used dihydrate OA, purity 99.6% (Sigma-Aldrich obtained from Riedel-de Haën, Enologia Apicoltura). The solutions of OA used in the trickling and spraying methods were the same, .8, 1.6, and 3.2% (3.2% means that 4.5 g of OA crystals were dissolved and added to sugar solution and made up to 100 ml, and is a .5 M solution of OA). By applying 50 ml of solution, the actual dose per colony was thus .56, 1.125, and 2.25 g. The sucrose solution was itself made up using one kilogram sucrose per one liter water. It is standard beekeeping procedure to apply OA in strong sucrose solution (50%W/W). The solution was prepared 12–18 h before application.

 

[jenkinsbrynmair]

The only 50% efficiency with regards to this research is in your imagination

Like most things

 

[Finman]

Old brains and not actually reading the research.

Höpö höpö


My ego stands ordinary British poking.


First, there is not much to read. Nothing new in it.

.

 

[jenkinsbrynmair]

Höpö höpö


My ego stands ordinary British poking.

It's large enough to withstand a full on nuclear attack

 

[Finman]

It's large enough to withstand a full on nuclear attack

Go back to clean those toilets. Money makes happy.
I come to help you at Christmas week.

 

[REDWOOD]

I don't think I will have enough spare time to do all that bee washing and counting with all my hives, I'll just do my usual vaping and drop count


Sent from my iPhone using Tapatalk

 

[charlievictorbravo]

LASI have a video clip...pretty basic and with a few omissions (like not using soapy water to dislodge the phoretic mites being washed off).. but, on the whole its not too bad (if only they wouldn't keep claiming that they have found things that other researchers published years ago).
https://youtu.be/1BuQlhvGOJk

For the sake of completeness, you think they'd give a recommendation for the percentage infestation at which treatment is needed. If you want to go to all that trouble (open up, remove brood, close up, open up, take sample, close up, freeze sample, wash sample , count sample, count mites, do the maths), you'd want to know what to do with the infestation figure when it's calculated.

Interesting that any mites in the removed brood did not feature in their calculations - only counted phoretic mites.

CVB

 

[Hivemaker.]

Interesting that any mites in the removed brood did not feature in their calculations - only counted phoretic mites.

Generally 2%, but different people have different infestation thresholds at which they treat their bees, no one size fits all.

The phoretic mites are the only ones relative to this monitoring, that is why any sealed brood is removed to ensure there can only be phoretic mites, any mites that were in the tiny number sealed brood cells are irrelevant in this case.

 

[B+.]

The only research referred to in the video clip is that they found varroa 13 times higher in drone cells than worker cells. It doesn't claim they were the first to find it.

I expect the reason why it doesn't mention soapy water, is that soap isn't necessary to dislodge the varroa.

It isn't new though. We already know that the longer development period of drones allows the varroa to produce more adult female offspring.
The reason why samples are frozen is to preserve them so they can be examined when there is less work to do. At this time of year, there is no other work to do so why freeze them? Using a different method makes the result non comparable

 

[Finman]

The only research referred to in the video clip is that they found varroa 13 times higher in drone cells than worker cells. It doesn't claim they were the first to find it.

I.

It is good to remind some Basic facts of varroa, who enter into beekeeping as a new beekeeper.

Mites like drones. That has been known 30 years. http://www.apidologie.org/articles/...4/Apidologie_0044-8435_1995_26_2_ART0004.html

A Dutch university studied 22 years ago, how you can catch mites fom a hive during summer time with system that you take a queen away, hive is broodless and you catch the mite gang with brood larva comb.

The key is, that then you have honey yield on, you cannot use mite killing chemicals in such hives. Apistan was one of the most usual on those days.

Taking off drone combs, that is popular treatment in hives. But in late summer there are no drones to take off.

But much less we have talked about facts, that even if you clean one hive in your yard mites invade quickly to the colony from another hives of your own yard and from other apiaries.,

My prosessional friend said yesterday, how fast mites occupy clean hives. He bought package bees from New Zealand. NZ did not have mites then. He said that it did not take much time when those colonies were enough occupied with mites.

A dutch experiment was such, that they moved a 5 frame broodless colony to the distance on 1 km. Then they succeed to catch 95% mites from the colony with drone larvae.... BUT....

I have tried the same, but at least I learned that it does not help. I did not know then, that mites move with masses to the clean hive with drones.

Drones do not much mind in what hive they live. They move lots of mites from hive to another, when hives are in same line or in one group.

And such advice that you can sublimate hives when ever and as much as you want, it is odd. I did not say mad.

My hives are 6-8 Langstroth boxes in July. It is madness to pollute 100 kg honey with oxalic fumes or with other stuffs..

I must wait, that I take honey boxes off.

I have a gap of 1-2 weeks, when yield is finish and then bees must start winter brood rearing in the first week of August.

If I take the queen off in the first week of July, I have a broodless hive at the start of August. Then I can catch mites effectively. But I must do the treatment at same time in the yard. When I keep 2-4 hives in same spot, it may be possible to handle big hives.

Stuffs are
- thymol
- formic acid
- oxalic acid in broodless hive.
.

To treat 3 times OR to make broodless hive in main yield.

I have nursed hives 30 years that I took the laying queen off in main yield. But then I gove up from that.

It is standard system in Finland. Reason is not mite, but restrict brooding.

Hives make brood heavily in July and then those bees emerge in August. They die before winter, and they have not much to do in August, when nature has no flowers.

Something like that ought be done that hive is broodless before winter bee rearing.

In such system bees are not able to rear 2 box winterers, but it is better than loose 1,5 boxes bees to the mite.

Invasion of Varroa jacobsoni into drone brood cells of the honey bee, Apis mellifera
W.J. Boota, b, J. Schoenmakerb, J.N.M. Calisa, b and J. Beetsmab

Amsterdam university

year 1995.......... Apistan era


Abstract - Invasion of Varroa mites into drone brood cells of honey bees was studied in colonies without worker brood. The probability for a mite to invade was dependent on the brood/bees ratio, which is defined as the number of drone brood cells capped per kg of bees. When compared with invasion in colonies with exclusively worker cells, Varroa mites invaded drone cells 11.6 times more frequently. This suggests that the biased distribution of mites over drone and worker cells in colonies with both types of brood cells results predominantly from the higher rate of invasion into a drone cell per se, when compared to that into a worker cell per se. Since the rate of invasion is high in drone cells, a trapping method using drone combs may be very effective in controlling the Varroa mite. When no other brood is present, 462 drone cells are estimated to be sufficient to trap 95% of the mites in a colony of 1 kg of bees.

All times are GMT

 

[alldigging]

biological systems are not that simple as well you know. I would guess pollen availablility and light levels play a part. Even the height of the sun in the brightest part of the day could be in there.

Fresh pollen availability would rely on better weather to go out and fetch. Where is pollen stored in the winter brood nest? If it's sufficiently cold then the bees might not be clustered near enough, nor able to break cluster to go get some.

The temperature of the centre of the cluster is different if it has brood, so how good a heat camera do you need to ID this?

The external temperature I assume has some effect on the cluster and the way it behaves.

Is there more likely to be brood inside a really well insulated hive during the depths of winter?

 

[Erichalfbee]

Is there more likely to be brood inside a really well insulated hive during the depths of winter?

If winter time is going to be your main varroa treatment then you will look inside. If not and it's just a mop up or a check that any earlier treatment has been effective then it doesnt matter