capped brood cells are not air tight, only honey
capped brood cells are not air tight, only honey
Copied from the link on Varroa mites concerning the life cycle of the mite.
Within a hive mites can reproduce on a 10-day cycle. The female mite, after detaching from an adult bee, will enter the cell of an uncapped brood. The mite shows preference for the drone brood, but will select what is available. Once the cell is sealed, the female will begin to lay eggs and then expire. As the young bee develops, so will the mites. As soon as the new bee is able to leave its berthing cell, the mites attach themselves and start the cycle anew. The life cycle of the Varroa mite is dependant on the existence of brood within a colony.
The mite has a 10 day cycle. Brood is capped for 13 days for workers 14 days for drones.
In a colony where eggs are constantly being laid there is a constant emergence. Also a constant appearance of young female mites looking for the next cell.
One question I still have. How long is a fogging effective? By the above every mite in a colony would be exposed in 14 days tops. Some other treatments are recommended for twice that long.
The life cycle of the mite is not nearly as important as how often it is exposed to the colony. And that is going to be every moment for 14 days at least.
The interval of any type of treatment should be the length of time that the treatment is effective, its really just that simple. If there is evidence that fgmo fogging kills mites for 7 days then it should be used every 7 days. If the 7 day interval just seems like a good number because its divisible by 21 then I wouldnt consider that anything more than an arbitrary number. I am going to leave it to others to argue about if and for how long fgmo kills mites, unlike some on this forum I post about things I have experience in and I hope my real life experience helps others, I have never claimed expertise in the realm of fgmo fogging.
Listened to FatBeeMan again and he says once a week and them suggest once every three weeks. Seems to work for him.
Point is that mineral oil needs to be applied repeatedly to be effective.
Could someone address my question as to whether any real studies have been done, not just a personal observation, on whether FGMO has a negative effect on bees or queen when used regularly, say every week or so? The FGMO is an oil, so it doesn't really evaporate away when it attaches to the bees or interior of hive, so how does it not build up over time? John
You might do a little research. at the time I posted that they where predicting wide spread destruction from the Carolinas to Maine. Yep saw that. Not, it was a hurricane that barely survived landfall.
Jim here is one from 1999.
nearly everything else I have found so far refers back to the above report in some manner or other. I have located other sites by doing a search for fogging bees with mineral oil. in one case Dr. Pedro P. Rodriguez gives a detailed description of how to do it.
I also found this from 2011.
Copied from the above link
Data obtained throughout this three-year project clearly suggests the success of FGMO/thymol fogging as a natural, cost-effective and sustainable method of Varroa mite control on the honey bee.
Much of the success of FGMO/thymol fog for Varroa mite control is evident in the data provided on the average mite count graphs below, but there are also many indirect and informal observations that support the use and recommendation of fogging. Some of these observations include overall strength and vitality of the experimental hives (observed by activity of honey bees at the hive entrance), honey production, over wintering success, and swarming (due to the vigor and population of the experimental hives).
Thank you for the information Daniel Y. John
Pedro may not have updated it but the method is obviously still being advocated. I have found several reports from various sources concerning the use of mineral oil with various application methods. at least one indicating that application by fogging is more effective. I have not seen one report that indicates that mineral oil is not effective.
Rader, You still haven't found anything to say about bees yet? I realize we all value your perfected onion. But maybe you can learn something about the subject matter once in a while. Your not all that interesting.
> I have not seen one report that indicates that mineral oil is not effective.
Read Randy Oliver's comments at ScientificBeekeeping.com Here's the link:
You need to read the page in its entirety, but here is a short quote:
The “fixed” oils–vegetable or food-grade mineral oil (FGMO), or hydrogenated shortening (Crisco) are also often used. Although grease or oil patties have been proven to be effective against tracheal mite (by disrupting its questing behavior), I haven’t had any luck in finding verifiable data demonstrating success in using fixed oils to control varroa. However, fixed oil may be useful as a carrier to distribute essential oils. Indeed, the specific type of oil carrier greatly affects the absorption and excretion of essential oils (Wilson & Isman 2006).
I don't agree that it is evidence it does not work simply because people don't use it. That is evidence of the choice people made in regard to it. why they would choose that might be for many reasons. Effectiveness may not have anything to do with that choice.
I've got ongoing work with it
WVU/UMD has ongoing work with it
-Fat Bee Man, Michael Bush I believe, there is quite a bit of ongoing work
Barry, in all honesty, I don't think there is any treatment for mites that has lasting merit to it, that's why a new treatment comes along every couple years or so. I think every treatment that has been invented has done some good towards mite population reduction, some are better than others. I don't want to divert this thread into another treat or not treat discussion, so I won't, but to say one form of treatment isn't worth using (I know you are not saying this) in favor of another is not helping us gain any ground on varroa, because none of them do the job we are looking for, which is complete erradication of mites in the hive, isn't that what we all hope for in a treatment or new genetics? John
No one finds it odd that the guy who first started broadcasting the use of FGMO is silent and nowhere to be found? Nothing new on it since it was made public on discussion forums many years ago? It appears to me to be more like another Housel Positioning. Use it if you want. Broadcast your success with it. I've never had the need to try it. Got a brand new fogger to sell someone!