Showing posts with label Nosema. Show all posts
Showing posts with label Nosema. Show all posts

Wednesday, October 19, 2011

Fumagilin & Screened Bottom Boards

Today the colonies received their last treatment of Fumagilin.  Fumagilin-b is an antibiotic that controls the disease Nosema, or bee dysentery.  The disease usually occurs during Winter while the bees are unable to release bodily waste each day.  The weather is too cold for the bees to fly outside to relieve themselves.  So they stay in the cluster and must hold it in for months sometimes.  If they get Nosema the bees can no longer hold it in and can make a big mess inside the hive.  Plus the stress of the disease can weaken the colony and lead to it's demise. 

In Fall each full hive gets 2 gallons of medicated syrup per twenty frames.  Last week they all got their first gallon.  Two colonies were given only one gallon since they are only ten frames in size; Myrina & Nuc #5.  The Fumagilin is put in a heavy sugar syrup, 2:1 sugar to water.  That's eight pounds of sugar in about two quarts of water.

Crystallized sugar after one gallon of 2:1 syrup
This time of year the bees will take it down in one to two days.  There is some crystallization of the sugar in the Hive Top Feeder.  To fix that i toss a quart of warm water into the feeder afterward.  It dissolves the sugar and the bees then take it down too.

Also it's time to close all the Screened Bottom Boards (SBB).  Some beeks leave them open but i close mine.  I think it helps the bees brood lower in the hive.  Slatted Racks aid that as well.  Myrina's SBB was replaced with a regular BB with a solid bottom.  Mary & Nuc #5 also have the solid BB now.  HelĂ©na & Melissa both have the closed off SBB.  As does that little September swarm i haven't been talking about.

The next steps toward Winterization will be the final Varroa check & treatment if necessary.

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Thursday, April 1, 2010

Inspection 4/1/10

Mary
81 f
Sunny

Long Live the Queen...She pulled it off! Mary lives for another season!

I opened up Mary today to see how she's doing. They have taken about half of the medicated syrup. It has begun to crystallize on the surface. Pulling off the HTF showed the still messy frames from where the Nosema caused problems. The bees where testy and did not like the intrusion. Many are from Myrina who is normally defensive. It is really a sign of how stressed they are having such a weak Queen. I used my smoker a lot.

I went through all the frames in the single deep hive. 1 through 3 were mostly honey, some old pollen, & emptied cells. Frame 4 was the same on the outside. The inside was half capped brood & fresh maple pollen. There was also a good showing of eggs and larva. Frame 5 was also half capped brood & fresh pollen but on both sides. I found Mary herself slowly walking around on the outside of 5. She was looking for a cell to lay in. I watched for a moment hoping to see her lay an egg. But then gave up thinking I may be hindering her. Frames 6 through 10 were again mostly honey, some old pollen, & emptied cells.

So, the brood nest is small. Oddly the pollen was being stored beneath the brood on the frames. I believe that is a result of the colder 30's & 40's night time temps. Again she is only in a single deep right now. However the temperatures here have finally broke. Night time temps are now in the 50's and up. The bees are now free to go anywhere they want in the hive. The brood pattern was beautiful; almost complete with very few holes.

I removed the SBB so to clean the dried sugar off it. It was replace with an unused BB that was meant for the new hive for the up-coming package. Inspection of the wood beneath the SBB showed the Nosema has gone away. It has been in place for 10 days. I saw no stain from the Nosema. The Fumagilin did it's job. I'll leave the HTF on for another week or two. Myrina's bees (they get all the credit) have done a great job cleaning up the cells. Rotten pollen, Chalkbrood mummies, & wax moth debris had been pulled from the frames. Now I hope they can start making some new wax.

The hive body itself was in terrible shape. It was very dirty from the Nosema & the dry sugar. I will consider whether to replace the wooden ware or not. Two frames did need replacing now. The top bar had split from the side rails. Frame 3 & 5. 5 has brood so it will stay in the hive for now. Frame 3 came out. Replaced by another honey filled deep frame. It was salvaged from Mary's second deep body removed in November due to Wax Moth. All of the frames in this deep came assembled from Dadant. They apparently didn't use glue. I was surprised to see the side staple pull out. Something else I'll need to fix.

About the brood. I did not see any Drone cells. I did see them when Myrina had only a little brood. All the frames are Plasticell. I don't know how much of an effect that will have. The cell size is standard not small cell. Curious to be sure. Mary, though, may not yet be in the mood to make drones yet. I'll check again next weekend.

She's still in the temporary location. I'm second guessing where to place ALL my hives. Wherever they end up will be decided soon. Before the package arrives.

I'm sorry for not taking any pictures this time. I was in a hurry.

Sunday, March 21, 2010

Mary out of ICU

Today Mary comes out of ICU (the garage). Actually last night she came out. After it got dark and all her bees were inside for the night I sealed up the entrance hole and moved her. But only to a temporary spot until I make a stand for the permanent site.

New Temporary Location

She gets to come out into the world again. She's had 2 weeks of gathering pollen & nectar. Her population is still small but Myrina's stolen bees have helped tremendously. There may be a few cold nights left but they should be fine. I really want them outside now so they can forage as early as they want to. They also need to finally clean up the inside of the hive. In the garage for the past 2 weeks the bees have been chopping at the steal mesh closing off the entrance. Now outside with the front entrance finally open they may commence all hive activities.

I left her closed up all night and opened her up completely this morning. I place several sticks right in front of her entrance. That should tell the bees something has changed causing them to re-orientate the location of the hive. I'm afraid they won't do that and gang up at the old window entrance.

Of course with Mary everything is going to be a problem.

After I placed her out last night I wanted to add a Hive top Feeder. The bees were calm & resting in the Hive body so I gave it a try. Oops, her girls did not like me opening the top cover and became defensive. I didn't want all her bees flying around at night in a new location so I quickly gave up. In the moment the top was off I saw where the syrup jar had leaked sugar all over the Inner Cover. I'll need to clean that up when I can get in there again.

When I opened up the hive this morning I had more of the same. At the front entrance and at the top where the ICU entrance was located. I was able to get the HTF on but not able to use the Vent Box as a shim. So right now the T-cover is sitting directly on the HTF. I filled the HTF with the syrup. I used a 1:1 syrup medicated with Fumagilin. They still have the Nosema because they didn't take their medicine the first time.

The new hive stand is a tree stump. I cut a tilt to it but made it to much. I can not get the whole gallon of syrup in the HTF without the syrup over flowing the front end. I'll stick a piece of wood underneath the front end and fix that.

I really want to break into the hive and do a complete inspection but I want to see them learn where there hive is first. Plus the shock of moving will need some time to wear off. I'll update this post later after I've fixed the HTF & the tilt.

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***UPDATE***
(3/21/10)

I was able to get the HTF inside the Vent box after I suited up. I adjusted the tilt and poured in the rest of the syrup. After an hour or so I noticed much buzzing around the entrance. Behavior I always attribute to the bees having found the syrup.

The Inner Cover was trashed with crystallized sugar. That and the Nosema stain may mean the end of that Inner Cover. If I can't get it clean without too much water damage then to the burn pile it will go.

Most field bees performed Orientation flights but about 20 to 30 kept going back to the previous entrance location. I'd put them back in the hive then wait an hour and do it again. By nightfall all were back home from what I can tell.

Now I'll sit back and see what Mary can do. If she needs another infusion of bees I can grab a frame of brood from Myrina easily.

Tuesday, March 9, 2010

Bringing in the Pollen

Since about Sunday the Silver & Red Maples have been in bloom. Both Mary & Myrina have been bringing it into the hives. Fresh pollen will stimulate the queens to begin laying eggs. This will be a turning point for Mary. She can now replace & increase her population. Once her numbers are big enough I can requeen her with (hopefully) a new queen from Myrina.

Mary still has a few other obstacles. The Nosema continues to affect her. She would be OK if the bees drank the medicated syrup but they won't touch it for some reason. Her population is so low it will take a while for her to increase in size. To do that she must replace the worker bees faster than they die off . Unfortunately, as evident from last year, her egg laying ability is weak too. So it will be some time before Mary is out of the woods (or should I say 'garage'). The next good sign is when I find she is actually laying eggs in a good pattern. When I see that and the weather has permanently warmed up I'll place Mary's hive outside again.

Here's a quick video of Mary's girls...
Mostly what you see are several bees taking their Orientation flights. Important stuff since it tells them where their hive is located. The bees that flew off are fledged field bees going to get pollen & nectar.

Myrina is doing well of course. I have no doubt that she'll brood up as fast as she can. What I'm looking for in her are Swarm Cells. Some time in the next few months she might produce some. These Swarm cells will contain the queens I'll use to requeen Mary and split Myrina to make another colony. That plus the packaged bees I will get from the Beginners Class and I hope to have 4 strong colonies at he end of the year.
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My new Beekeeping Assistant
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Guarding against Robing

My one cat likes Mary's ICU hive in the garage. Maybe it's the sound, the smell, or the heat lamp but I catch her there each day. She mostly loves watching the bees fly in & out from the safe side of the window.

Sunday, February 21, 2010

Inspection 2/21/10

Mary & Myrina
54 f
Sunny

Really...it's 54 degrees. Really!


Mary-
She is in her last days unless I do something drastic. Even then she might not make it. Her end is at hand. Poor Mary, she never could figure things out.

Before i opened the top there were only a few girls flying around the hive. The first fly day since mid-January. One would expect there to be tons of bees taking cleansing flights. When the cover came off I saw hundreds of dead bees covering the sugar on the inner cover.

95% of these bees are dead

This sugar was put on the inner cover Jan 18th. It had hardened over from the moisture in the hive. The brown stain is bee waste. It could be Nosema but I'm not sure. When I cleaned out the entrance lots of dead bees fell out. Maybe it was clogged, so the girls had nowhere to go. I regularly clean the dead bees out the entrance. They are apparently dying faster than I am cleaning.

Nosema or clogged entrance?

This is the Vent box. Very messy. The Inner cover was stained just as bad. If you click on the image a larger image will open. There you can see where the girls chewed the styrofoam around the vent holes to make them bigger.

Now I got a good look at Mary's cluster. What a sad sight indeed. A couple of hundred bees is all that remains of Mary. Her cluster could fit in a two cup measuring cup. She can't possibly generate enough heat to survive these cold Winter months now. Egg laying should be starting soon if not already. Without sufficient heat to rear brood, let alone lay eggs, Queen Mary won't have a chance to replace the dead bees with new bees. She is over the edge. Past the point of no return.

The Last Stand

I pulled out all the frames to see what's going on. Four frames were light on stores so I replaced them with honey & pollen frames I had in waiting (The cleaned Wax moth frames from this post). The remaining frames had plenty of honey in them. Plenty of dead bees too. Two types of dead bee. The 'Starvation bee' & the 'Cold bee'.

Symmetry in death

The 'starvation' bees are tails out of the cells. They were inside the cluster when they died. The 'cold' bees died on the outside of the cluster where the temps were coldest. They were likely too cold to re-enter the cluster to feed. You can see the outline of the cluster at the time these 'cold' bees died. Oh, might I add a giant 'I Think" to the above hypothesis.

Also I found where Mary's girls were storing the sugar in one of the frames.

Sugar in cells

Notice how they put it in the brood area of the frame. Apparently beneath where they were clustering. Must have been done on a few warmer, but not fly, days. I replaced the hard messy sugar on top of the inner cover with fresh sugar. I hope it helps.

I've posted a question about their plight on the BeeMaster web forum. Lots of ideas there. I'll post what I do with sad, sad Mary.

Queen Mary nearing her end

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Myrina
What's to say about an aggressive clean freak who's population is sky-high. Other than she's doing fine if not great. Popped her cover to find thousands of bees moving freely around the inner cover where i put the sugar last month. I swear one of them yelled at me with a Brooklyn accent "Hey yous,..Shut dat door...We's workin' here". These bees came out of that hive like it was on fire. All of them head-butting me to move me off. I can't imagine how bad honey collection is going to bee in July when it's hot.

Myrina

The best part of this was that I could not find ANY dead bees. All her dead have been removed with the efficiency of a well oiled machine. Note that you do not see any bee waste anywhere. These are some very hygenic bees.

Next I took off the inner cover to look at her population. After all those bees came out to greet me I didn't think I needed to but should just to make sure.

Myrina's Legions

I don't think Myrina knows it's Winter. Just thousands of bees busy with hive chores milling about. Remember she's a double deep so there is much more than you see here. Again, not one single dead bee was to be found. I began to pull a frame to check for brood when another cloud of bees came at me. I realized I did not have the smoker with me. I didn't bring it thinking it was to cold to need it. Again Myrina always likes to prove me wrong. I called it a day and closed her up. I'll check her brood on the next warm day instead. She's healthy & strong. No need to pester her just yet.