Hi. I checked my hives yesterday and found a small problem/disease in one of my strongest hives with the brood. The brood pattern is not spotty, but I have noticed scattered, various dead brood of different shades and color. Some are dried, some are discolored, and others were a little "rotten". This hive has been healthy all year and 2 weeks ago when I checked there was no disease present.
I did have a problem with European Foulbrood with one hive in early May, but destroyed that weak hive and all the equipment before I even obtained this hive which was created from a split off a different colony.
It does in some ways look like a Foulbrood infestation, but I always have heard that this was a disease that usually only affected weak hives at not usually at the peak of summer.
I was wondering if a strong mite infestation could cause this. I use screened bottom boards and have done powdered sugar dusting throughout the season.
I know I can send a sample of the comb to the Beltsville lab for testing, but was wondering if anyone knew if mites could cause brood to appear this way.
I guess it points the evidence away towards a mite infestation, but all of the affected brood cells are before they are capped. If I am right mites only reprodcue in capped cells. I wasn't sure if a heavy infestation could affect uncapped larva