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Cooperative Extension San Joaquin County

Posts Tagged: bumble bee

A Reason Why Bumble Bee Population Is Declining

A yellow-faced bumble bee, Bombus vosnesenskii, nectaring on Salvia 'Indigo Spires' in Kate Frey's pollinator garden at the Sonoma Cornerstone. (Photo by Kathy Keatley Garvey)

The news is disturbing but not unexpected. Scientists are linking global climate change to one reason why the worldwide population of bumble bees is declining. An article published Sept. 28 in the journal Ecology Letters by Florida State University...

Posted on Tuesday, October 10, 2017 at 3:05 PM

Hey, Honey Bee, I'll Race You to the Flowers!

A honey bee and a bumble bee, Bombus melanopygus, head for the same patch of lavender. This image was taken in Vacaville, Calif. (Photo by Kathy Keatley Garvey)

Hey, honey bee, I'll race you to the flowers. Okay, but you'll lose. I can go faster. Watch me! The scene: a male bumble bee, Bombus melanopygus, and a worker honey bee, Apis mellifera, are buzzing along at breakneck speed toward the lavender in our...

Posted on Wednesday, June 21, 2017 at 5:00 PM

The First Bumble Bee of the Year!

A male three-banded bumble bee, Bombus melanopygus, on manzanita on Jan. 27 in the UC Davis Arboretum. (Photo by Allan Jones)

Remember that recently concluded contest to find the first butterfly of the year? Arthur Shapiro, distinguished professor of evolution and ecology at UC Davis, annually sponsors the "Beer for a Butterfly" contest, offering a pitcher of beer for the...

Posted on Friday, January 27, 2017 at 3:43 PM

Robbin Thorp: Chasing Franklin's Bumble Bee

Robbin Thorp and his computer screen showing his image of Franklin's bumble bee. (Photo by Kathy Keatley Garvey)

It may be extinct, but don't say the "E" word to Robbin Thorp. Thorp, a noted bumble bee expert, hasn't seen Franklin's bumble bee for 10 years, but that doesn't mean it's not there--somewhere in its small native range of southern Oregon and northern...

Posted on Monday, December 12, 2016 at 5:33 PM

When Varroa Mites Hitch a Ride

A varroa mite attached to a honey bee forager. It's the reddish brown spot near the wing. The bee is foraging on lavender. (Photo by Kathy Keatley Garvey)

Those blood-sucking varroa mites (Varroa destructor) are considered the No. 1 enemy of beekeepers. In powerful numbers and weakened colonies, they can overwhelm and collapse a hive. We remember seeing a varroa mite attached to a foraging honey bee one...

Posted on Tuesday, March 1, 2016 at 4:40 PM

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