Backyard Orchard News
UC Davis bee specialists were well represented in a recent edition of The IPM Practitioner, which landed on our desk last week.
The edition, devoted to “Pesticides and Honey Bee Colony Collapse Disorder,” includes four photos from the UC Davis Department of Entomology. They show bee specialist Michael “Kim” Fondryk tending his bees in the Roy Gill almond orchard,
As mentioned in the publication, “The exact cause of CCD has not been determined. A CCD task force has been established and a number of possibilities are being investigated.”
Bees continue to die in alarming numbers. Some of the nation's beekeepers report losing from one-third to 100 percent of their bees due to the mysterious phenomenon known as CCD, in which all the adult bees abandon the hive, leaving behind the queen, brood and stored food.
As managing editor William Quarles says in The IPM Practitioner: "Despite our dependence on honey bees, we have lost about 45 percent of them over the past 65 years. According to the USDA, there were 5.9 million colonies in 1947 and about 2.4 million today."
Quarles, an IPM specialist who is executive director of the Bio-Integral Resource Center, suggests a nationwide monitoring program to confirm or deny the role of pesticides in CCD.
Quarle concludes: "If we do not take better care of our bees, there could be a significant impact on crop production. Some foods could become scarce and expensive. We should also treat our bees better because they are our friends, they enrich our planet, and it is the right thing to do."
Well said. Well said, indeed.
Michael "Kim" Fondrk
It blooms in winter and the bees love it.
Winter jasmine (Jasminum nudiflorum), a rambling vine with trumpetlike yellow flowers, is charming visitors in the
The six-petaled blossoms
Don’t be surprised to see winter jasmine among the selections in the half-acre bee friendly garden being planned at the Harry H. Laidlaw Jr. Honey Bee Research Facility at UC Davis. The nationwide landscape design competition, which ends Jan. 30, is sponsored by Häagen-Dazs. The garden is expected to be a reality by October.
Unfortunately, the winter jasmine has no fragrance. But that doesn’t stop the bees from greeting and hugging the flowers and gathering pollen. It would take the long beak of a hummingbird to reach into the trumpetlike flower for the nectar. Or a carpenter bee to slit the corolla and steal the nectar.
But for now, on the afternoon of Jan. 24, 2009, the moments are golden.
Bee in Blossom
When you think of a teddy bear, you think of a huggable stuffed animal.
Not so entomologists. When they think of a teddy bear, they think of the male Valley carpenter bee.
It's a green-eyed, fluffy golden insect that's nicknamed "teddy bear." You can hug it, too. Unlike the females, male carpenter bees don't sting.
When a Davis resident recently cut down a plum tree, hordes of buzzing insects tumbled out. Seeking identification, the resident carted a chunk of the wood and the golden insects into the Bohart Museum of Entomology.
What were they?
“Male carpenter bees, Xylocopa varipuncta, also known as Valley carpenter bees,” said entomologist Lynn Kimsey, director of the Bohart Museum of Entomology and professor and chair of the UC Davis Department of Entomology.
“Some of us refer to these males as ‘teddy bear’ bees, because of their yellowish-brownish color and fuzzy burly bodies,” said UC Davis emeritus entomology professor Robbin Thorp, who studies pollinators. “The females are all black with violaceous (violet) reflections on their dark wings.”
Carpenter bees, so named for their ability to tunnel through wood to make their nests, carve with their mandibles (jaws) but do not ingest the wood. Only the females excavate the tunnels, which average six to 10 inches in depth.
Thorp says he tries to convince people to learn to live with these bees as “they are important pollinators in our environment and have potential as pollinators of some crops.”
“Carpenter bees are beneficial in that they pollinate flowers in native plant communities and gardens,” he said. “That far outweighs any damage to wood structures.”
California is home to three carpenter bee species. I've seen X. tabaniformis orpifex buzzing around my backyard but never The Golden One.
What a gorgeous insect!
If you like to combine art with science, here you go.
In keeping with the theme, “The Consilience of Art And Science," the Pence Gallery and the UC Davis Art/Science Fusion Program are sponsoring a juried exhibition, open to all artists and scientists.
The deadline to submit a CD and entry information is Feb. 20. The Pence Gallery, located at
The goals of the Pence Gallery exhibitions are three-fold, said Art/Science Fusion co-director Diane Ullman, associate dean of Undergraduate Academic Programs,
The goals are:
1. To show create work that explores the intersection between art and science
2. To foster communication between the arts and sciences
3. To spark new ways of viewing the world and ourselves.
You can find more information--the rules and an entry form--here. For additional information, contact Natalie Nelson, director of the Pence Gallery, at (530) 758-3370 or at email@example.com.
One has only to look at photographs of insects to realize that "Neither science nor the arts can be complete without combining their separate strengths."
Call it serendipity. Call it a major collaborative effort. Call it a keen eye for science.
Whatever you call it, research that sprang from studies on insect pest control in the Bruce Hammock lab at the
We all know of people suffering from heart failure, which occurs when the heart can’t pump enough blood throughout the body. The condition affects 5 million people in the
The research in the laboratories of cardiologist and cell biologist Nipavan Chiamvimonvat, Department of Cardiovascular Medicine, UC Davis School of Medicine, and entomologist Bruce Hammock, Department of Entomology, showed that the new class of drugs reduces heart swelling in rat models with heart failure.
“This holds promise to treat heart failure and other cardiovascular as well as kidney problems,” said nephrology professor Robert Weiss, Department of Internal Medicine.
Similar compounds are now in clinical trials.
"The study of rat models showed that heart failure is driven by high angiotensin associated with high blood pressure, artery disease and some kidney disease,” Hammock said. “When that occurs, a key enzyme called soluble epoxide hydrolase is increased."
The 11-member research team showed they could inhibit the enzyme with a drug made by Paul Jones, a former postgraduate researcher at UC Davis. The swelling and ultimate failure of the heart is blocked and reversed, Hammock said.
“Interestingly, the increase in heart size associated with extreme exercise does not increase levels of the epoxide hydrolase, and exercise induced heart enlargement fortunately is not blocked by the drug.”
This research follows earlier studies reported from the Chiamvimonvat laboratory on cardiac hypertrophy. The two UC Davis laboratories collaborated with the laboratories of John Shyy at UC Riverside and Yi Zhu, Cardiovascular Sciences,
The paper, “Soluble Epoxide Hydrolase Plays an Essential Role in Angiotensin II-Induced Cardiac Hypertrophy,” is online.
This is definitely a significant discovery that could result in saving scores of lives. And to think it all started with the Hammock lab discovering an enzyme inhibitor that regulates insect larvae development.