Sources of fall forage are ever important as we head into winter in California. With a bloom period ranging from August through October, rabbitbrush is one such source that provides both nectar and pollen. There are many species of rabbitbrush which range from British Columbia in the North to New Mexico in the South, California […]
The graphic above illustrates the basic cycle of beekeeping during the summer season in northern California. Things like applying treatments and feeding are management decisions based on what the bees are doing in response to the environment around them. Feeding and treating is operation specific and location dependent. Think of treatment windows in terms of […]
As we enter the final week of summer it seems fitting to talk about Quercus lobata Née, the Valley Oak. This tree is a late summer source of bee forage in Northern California where forage is scarce going into the fall. Valley oaks are endemic to California and are found in the interior valleys and […]
Microscopy is a useful tool to diagnose honey bee problems. While working on some content for eXtension.org, I helped record the following video. These bacterial spores where found in a comb showing symptoms of American foulbrood disease. Paenibacillus larvae With Brownian Motion From a Honey Bee Colony Video description: Spores of the causative agent of […]
The past few months I have been trying to capture honey bees that are infected with Phorid Flies in the Chico, CA area. So what is a Phorid Fly? It is a fly commonly referred to as the humpback-fly because of its appearance. Previously the fly was known to parasitize bumble bees and paper wasps […]
North Dakota landscapes, both farmed and fallow, are golden-hued with the onset of sunflower, goldenrod and gum plant bloom. These three plants belong to the family Asteraceae, commonly called the Aster or Sunflower Family. While sunflower and goldenrod are well-known late summer sources of forage, gum plant also provides a source of nectar and pollen […]
Previously I wrote a blog about an insect known as a “Wormlion.” I suspected this insect to be an Antlion at first. I then figured that not many people knew what an Antlion was so I figured I would blog about them. Antlions are in the order Neuroptera which in English translates into “nerve-wings.” An […]
The Smithsonian Folklife Festival is an annual festival held on the National Mall in Washington, D.C. that celebrates cultural diversity and traditions. The USDA Bee Research Lab was asked to participate this year as part of the theme “Campus and Community”. The festival commemorated the 150th anniversary of USDA and land-grant universities. Abraham Lincoln signed […]
I have been living in Northern CA for just over a year now and from what I’ve been told the weather in the past year has been atypical. Last spring and early summer was late and unusually wet which led to one of the best star thistle crops in years. Because of the rain the […]
Among the many diseases and pests that the APHIS National Honey Bee Survey samples are analyzed for is the exotic parasite, the Tropilaelaps mite. These mites are native to tropical Asia and are a serious threat to the honey bee. While they naturally use the giant honey bee (Apis dorsata) as their host, Tropilaelaps mites […]
