Cooperative Extension San Joaquin County
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Cooperative Extension San Joaquin County

Posts Tagged: nectar

What Attracts Bees to Blossoms? A Surprising Discovery by UC Davis Ecologist Rachel Vannette

A honey bee heads toward a lupine blossom. It's not just the nectar she's scented. UC Davis community ecologist Rachel Vannette has just published a paper in New Phytologist journal that shows nectar-living microbes release scents or volatile compounds, too, and can influence a pollinator's foraging preference. (Photo by Kathy Keatley Garvey)

You're watching honey bees foraging in a field.  They buzz toward a blossom, sip nectar, and then head for another blossom. Typical, right? But there's much more going on than you think. It's not just the nectar that she's scented. UC Davis...

A honey bee heads toward a lupine blossom. It's not just the nectar she's scented. UC Davis community ecologist Rachel Vannette has just published a paper in New Phytologist journal that shows nectar-living microbes release scents or volatile compounds, too, and can influence a pollinator's foraging preference. (Photo by Kathy Keatley Garvey)
A honey bee heads toward a lupine blossom. It's not just the nectar she's scented. UC Davis community ecologist Rachel Vannette has just published a paper in New Phytologist journal that shows nectar-living microbes release scents or volatile compounds, too, and can influence a pollinator's foraging preference. (Photo by Kathy Keatley Garvey)

A honey bee heads toward a lupine blossom. It's not just the nectar she's scented. UC Davis community ecologist Rachel Vannette has just published a paper in New Phytologist journal that shows nectar-living microbes release scents or volatile compounds, too, and can influence a pollinator's foraging preference. (Photo by Kathy Keatley Garvey)

Microbial stains (fungi and bacteria) isolated from floral nectar. (Photo by Rachel Vannette)
Microbial stains (fungi and bacteria) isolated from floral nectar. (Photo by Rachel Vannette)

Microbial stains (fungi and bacteria) isolated from floral nectar. (Photo by Rachel Vannette)

This is the electroantennogram (EAG) assay set-up. (Photo by Bryan Smith, USDA-ARS)
This is the electroantennogram (EAG) assay set-up. (Photo by Bryan Smith, USDA-ARS)

This is the electroantennogram (EAG) assay set-up. (Photo by Bryan Smith, USDA-ARS)

Posted on Thursday, September 28, 2017 at 5:00 PM

Surprising Research Results: What the Microbes in Nectar Revealed

Researchers studied the microbes in the nectar of the sticky monkeyflower, Mimulus auranticus. (Photo by Kathy Keatley Garvey)

It's surprising what the microbes in nectar can reveal. Take the nectar of the sticky monkeyflower, Mimulus auranticus. UC Davis community ecologist Rachel Vannette and colleague Tadashi Fukami of Stanford University decided to examine microbial...

Researchers studied the microbes in the nectar of the sticky monkeyflower, Mimulus auranticus. (Photo by Kathy Keatley Garvey)
Researchers studied the microbes in the nectar of the sticky monkeyflower, Mimulus auranticus. (Photo by Kathy Keatley Garvey)

Researchers studied the microbes in the nectar of the sticky monkeyflower, Mimulus auranticus. (Photo by Kathy Keatley Garvey)

Posted on Monday, June 12, 2017 at 5:03 PM

What a Stretch to Get the Nectar!

A honey bee

How often do you see a honey bee "standing upright" to reach nectar? "Well, I guess I could just buzz up there and grab some nectar! But why not stay right here where I am and just s-t-r-e-t-c-h  like a giraffe to get it?" This bee, foraging on a...

A honey bee
A honey bee "stands upright" to reach the nectar on a Photinia blossom. (Photo by Kathy Keatley Garvey)

A honey bee "stands upright" to reach the nectar on a Photinia blossom. (Photo by Kathy Keatley Garvey)

Okay, I'll buzz over to it. (Photo by Kathy Keatley Garvey)
Okay, I'll buzz over to it. (Photo by Kathy Keatley Garvey)

Okay, I'll buzz over to it. (Photo by Kathy Keatley Garvey)

Posted on Tuesday, April 11, 2017 at 5:52 PM
Tags: honey (1), honey bees (3), nectar (6), Photinia (1), stretch (1), UC Davis Picnic Day (1), worker bees (1)

Sharing the Nectar--But Not All at the Same Time

A syrphid fly (bottom right) heads toward a Mexican sunflower occupied by a honey bee. The fly, aka hover fly and flower fly, wants some nectar, too.(Photo by Kathy Keatley Garvey)

Everybody eats in the pollinator garden. Maybe not at the same time, but they all eat. We noticed a syrphid fly, aka flower fly/hover fly, heading toward a Mexican sunflower (Tithonia) in our pollinator garden. Alas for the fly, it was occupied....

A syrphid fly (bottom right) heads toward a Mexican sunflower occupied by a honey bee. The fly, aka hover fly and flower fly, wants some nectar, too.(Photo by Kathy Keatley Garvey)
A syrphid fly (bottom right) heads toward a Mexican sunflower occupied by a honey bee. The fly, aka hover fly and flower fly, wants some nectar, too.(Photo by Kathy Keatley Garvey)

A syrphid fly (bottom right) heads toward a Mexican sunflower occupied by a honey bee. The fly, aka hover fly and flower fly, wants some nectar, too.(Photo by Kathy Keatley Garvey)

Can we share? As the honey bee keeps nectaring, the syrphid comes in for a taste. (Photo by Kathy Keatley Garvey)
Can we share? As the honey bee keeps nectaring, the syrphid comes in for a taste. (Photo by Kathy Keatley Garvey)

Can we share? As the honey bee keeps nectaring, the syrphid comes in for a taste. (Photo by Kathy Keatley Garvey)

All mine! The honey bee wins. (Photo by Kathy Keatley Garvey)
All mine! The honey bee wins. (Photo by Kathy Keatley Garvey)

All mine! The honey bee wins. (Photo by Kathy Keatley Garvey)

All mine! The syprhid fly takes over. (Photo by Kathy Keatley Garvey)
All mine! The syprhid fly takes over. (Photo by Kathy Keatley Garvey)

All mine! The syprhid fly takes over. (Photo by Kathy Keatley Garvey)

All mine! A drone fly claims it. The drone fly is often mistaken for a bee. Note the
All mine! A drone fly claims it. The drone fly is often mistaken for a bee. Note the "H" on the abdomen of the fly. (Photo by Kathy Keatley Garvey)

All mine! A drone fly claims it. The drone fly is often mistaken for a bee. Note the "H" on the abdomen of the fly. (Photo by Kathy Keatley Garvey)

Posted on Thursday, October 13, 2016 at 4:36 PM
Tags: drone fly (1), Halloween (1), honey bee (1), insects (1), Mexican sunflower (1), nectar (6), syrphid fly (1), Tithonia (1)

When Life Is Just a Bowl of Cherries (Cherry Laurels)

A backlit honey bee, its tongue or proboscis extended, heads for cherry laurel blossoms. (Photo by Kathy Keatley Garvey)

It's definitely a bee friendly plant, packed with nectar and pollen. The cherry laurel, Prunus caroliniana, a member of the rose family, draws honey bees as if there's no tomorrow. Native to the southeastern United States, it can double as a...

A backlit honey bee, its tongue or proboscis extended, heads for cherry laurel blossoms. (Photo by Kathy Keatley Garvey)
A backlit honey bee, its tongue or proboscis extended, heads for cherry laurel blossoms. (Photo by Kathy Keatley Garvey)

A backlit honey bee, its tongue or proboscis extended, heads for cherry laurel blossoms. (Photo by Kathy Keatley Garvey)

The anticipation of nectar and pollen is intense.  (Photo by Kathy Keatley Garvey)
The anticipation of nectar and pollen is intense. (Photo by Kathy Keatley Garvey)

The anticipation of nectar and pollen is intense. (Photo by Kathy Keatley Garvey)

Touchdown! Pollen and nectar on the cherry laurel. (Photo by Kathy Keatley Garvey)
Touchdown! Pollen and nectar on the cherry laurel. (Photo by Kathy Keatley Garvey)

Touchdown! Pollen and nectar on the cherry laurel. (Photo by Kathy Keatley Garvey)

Posted on Thursday, March 24, 2016 at 4:27 PM

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