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StumbleUponPosts Tagged: UC Davis Department of Entomology
Bugfest at Dixon May Fair
You'll not only see honey bees in a bee observation hive, but specimens of bumble bees, cuckoo bees, carpenter bees, long-horned bees, squash bees, plasterer bees, mining bees, leafcutter bees, wool carder bees and sweat bees.
The exhibit is in the Southard Floriculture Building on the May Fair grounds, located at 655 S. First St., Dixon.
Participating are the Harry H. Laidlaw Jr. Honey Bee Research Facility and the Bohart Museum of Entomology, both part of the UC Davis Department of Entomology; and the newly formed UC Davis Honey and Pollination Center, headquartered at the Robert Mondavi Institute for Wine and Food Science.
Beekeeper Brian Fishback of Wilton, owner of BD Ranch and Apiary and a volunteer at the Laidlaw facility for several years, is providing the bee observation hive, a glassed-in box that enables viewers to observe the activity that goes on inside a bee hive.
Fishback, a past president of the Sacramento Area Beekeepers' Association and member of the California State Beekeepers' Association, is an educator as well as a beekeeper. He speaks about bees at schools, organizations and festivals. His daughter, Emily, 2, accompanies him on many of his talks.
“Emily loves bees,” said Fishback, who keeps 125 hives on his property in Wilton. She knows that a bee has six legs, four wings and five eyes, and that each bee has three body parts: the head, thorax and abdomen. She knows that a honey bee eats pollen and nectar, pollinates flowers and makes honey.”
UC Davis graduate students, including squash bee expert Katharina Ullmann and area beekeepers (among them Jesse Loren of Winters and Lindsay Weaver of Sacramento) will be available during part of the fair (weekend) to share their experiences with fairgoers.
Children attending the Dixon May Fair on Mother's Day, Sunday, May 12 can make a "Honey Bee on a Stick," an arts and crafts project that doubles as a hand-held fan and puppet. Executive director Amina Harris of the Honey and Pollination Center, an area beekeeper and a former school teacher, will help the children create the take-home art. The free activity is from from 1 to 3 p.m. in the Southard Floriculture Building. Harris crafts the bee art using a yellow paper plate, duct tape, googly eyes, a stick, and pipe cleaners (for antennae).
The Dixon May Fair's floriculture building, staffed by superintendent Kathy Hicks of Dixon, includes stunning garden displays and a myriad of plants and cut flowers. It is open from 4 to 10 p.m. on Thursday, and from 10 a.m. to 10 p.m., Friday, Saturday and Sunday.
Beekeeper Brian Fishback shows his daughter, Emily, his bee observation hive. (Photo by Kathy Keatley Garvey)
About That Stink Bug...
Trouble, indeed.
The brown marmorated stink bug (Halyomorpha hales), a native of Asia, was first discovered in the United States in Allentown, Penn., in 2000.
Since then, it's been making a big stink. Literally. It's a major agricultural threat that feeds on vegetables and fruit, says UC Davis associate entomologist/chemical entomologist Jeffrey Aldrich. USDA has estimated $21 billion worth of crops are at risk. This includes apples, peaches, tomatoes, grapes, cotton, corn, green peppers, soybeans and other crops.
Aldrich also calls it a "pervasive residential nuisance." It may select your home as its wintering site, creating an infestation. That prompted The New York Times to declare "Move Over Bedbugs: Stink Bugs Have Landed."
Aldrich will discuss the insect's invasion and its semiochemistry at the UC Davis Department of Entomology seminar on Wednesday, May 1, from 12:05 to 1 p.m. in Room 1022 of the Life Sciences Addition, corner of Hutchison and Kleiber Hall drives. Professor Frank Zalom and Ph.D candidate Kelly Hamby of the Zalom lab are the hosts.
Aldrich will describe the history of the discovery; its subsequent spread across the country; and also detail the discovery of the bug's chemical communication system and ongoing pheromone commercialization efforts. He then will present results of laboratory experiments using native egg parasitoids exposed to the stink bug eggs.
An expert on BMSB, Aldrich established that the insect in the U.S. is cross-attracted to the pheromone of a congeneric species; he facilitated commercialization of this cross-attractant lure; and he led the team that identified the pheromone of the BMSB. The research is potentially useful in systems to mass trap and/or attract-and-kill BMSB.
Aldrich's 40-year career on insect chemical ecology has taken him to Brazil, Australia, Japan and Italy. He served as a research entomologist for the U.S. Department of Agricultural Research Service, Beltsville, MD, from 1980 to 2011, including five years as a laboratory research leader (1999-2004).
His work has been published in such journals as Science, Journal of Chemical Ecology, Chemoecology, and Environmental Entomology. He also travels around the nation and world, presenting lectures at technical organizations, universities, government agencies, and to lay groups.
A member of the Entomological Society of America since 1972, Aldrich is a past president of both the International Society of Chemical Ecology and the Entomological Society of Washington, D.C., and was appointed associate editor of the Journal of Chemical Ecology in 2009.
The New York Times, Washington Post, Baltimore Sun, Discovery, U.S. News and World Report, and Organic Gardener have interviewed him about his work. In addition, he's been interviewed by a number of radio and TV stations in the United States and Brazil.
The May 1 seminar should be a real eye-opener about a major agricultural pest that continues to invade the United States. If you miss the seminar, plans call for video-recording the seminar for later posting on UCTV Seminars website.
Brown marmorated stink bugs. (USDA, Stephen Ausmus)
Ladybugs Coming Up in the World
Decisions, decisions...
Where's the best spot for the new residents of my garden?
I acquired two ladybugs last Saturday during the 99th annual UC Davis Picnic Day. Background: as part of the campuswide celebration, the Department of Entomology annually hosts an all-out bugfest at the Bohart Museum of Entomology and at Briggs Hall. And keeping with the Briggs Hall tradition, the UC Statewide Integrated Pest Management Program gifted picnickers with the treasured ladybugs.
Now ladybugs aren't really "bugs"; they're beetles. Neither are they all "ladies"; some have manly qualities. (Gender issues may confuse us, but not the lady and gentlemen beetles.)
A ladybug is a good beneficial insect. It can devour an estimated 5000 aphids in its lifetime (three to six weeks).
So, every year for the past several years, I've adopted two ladybugs, chauffered them home, and tucked them in our garden. "Please eat the aphids," I tell them.
And they do.
They're good at following instructions.
Last year they took up residence in a bed of red roses. This year, they're coming up in the world--a high rise. A tower of jewels (Echium wildpretii) is "home sweet home."
Life doesn't get any better than this if you're a ladybug (and any worse if you're an aphid).
Two ladybugs in a tower of jewels, Echium wildpretii. (Photo by Kathy Keatley Garvey)
Ladybugs exploring the menu. (Photo by Kathy Keatley Garvey)
Hmm, looks like an aphid over there to me. (Photo by Kathy Keatley Garvey)
Sounding the Alarm for Bumble Bees
So says David Goulson, professor at the University of Stirling, U.K., who will speak on “The Ecology and Conservation of Bumble Bees” on Wednesday, April 24 at a UC Davis Department of Entomology seminar.
His seminar, set from 12:05 to 1 p.m. in Room 1022 of the Life Sciences Addition, corner of Hutchison and Kleiber Hall drives, promises to be well attended. It is scheduled to be videotaped and broadcast at a later date on UCTV.
UC Davis pollination ecologist/assistant professor Neal Williams will host him.
"I will discuss the main causes of their declines, which probably vary between regions," said Goulson, who founded the Bumblebee Conservation Trust in 2006.
"In Europe, the primary driver is thought to be habitat loss and other changes associated with intensive farming," Goulson said. "In the Americas, declines of some species are likely to be due to impacts of non-native diseases.
“I will then turn to possible links between poor bee health and pesticides, particularly a class of insecticides known as neonicotinoids. A controversy is currently raging on both sides of the Atlantic; I will give my view on the evidence for environmental impacts of these pesticides.”
Goulson works mainly on the ecology and conservation of bumble bees. He has published more than 200 scientific articles on the ecology and conservation of insects, with a particular focus on bumble bees. He is the author of Bumblebees: Their Behaviour, Ecology and Conservation, published in 2010 by Oxford University Press, and of A Sting in the Tale, a popular science book about bumble bees, published in 2013 by Jonathan Cape.
Goulson received his bachelor’s degree in biology from Oxford University, followed by a doctorate on butterfly ecology at Oxford Brookes University. Subsequently, he lectured in biology for 11 years at the University of Southampton, before moving to Stirling in 2006, and then to Sussex in 2013.
Meanwhile, what's not to like about bumble bees? The dwindling population of many species...
Yellow-faced bumble bee, Bombus vosnesenskii, on Scabiosa. (Photo by Kathy Keatley Garvey)
Show Me the Honey: UC Davis Picnic Day
You'll probably like lima bean honey.
Lima beans are a honey production crop, and this varietal is one of the six honeys to be sampled at the UC Davis Department of Entomology's free honey-tasting event from 10 a.m. to 3 p.m. on Saturday, April 20 at Briggs Hall. It's all part of the 99th annual UC Davis Picnic Day.
Extension apiculturist Eric Mussen has been staffing the activitity at the UC Davis Picnic Day for more than three decades.
Every year Mussen tries to offer something new and/or different for visitors to taste. He's gathered everything from cotton honey to starthistle honey. (Starthistle, by the way, is his favorite, and is also favored by many beekeepers.)
This year, in addition to lima bean honey, the varietals are manzanita, pomegranate, orange blossom, almond blossom and northern desert shrub (from Nevada). (See the National Honey Board website for information on varietals.)
Honey bees are trucked to California from all over the country to pollinate the state's 800,000 acres of almonds. But have you ever sampled almond blossom honey? Most people haven't. It's rather strong and leaves an aftertaste, Mussen says.
What many folks are also eager to try is the reddish-tinged honey from the northern desert shrub.
The honey tasting will take place in the courtyard of Briggs Hall, which is located just off Kleiber Hall drive. Each person will be given six toothpicks, one for each varietal. Due to popular demand, two tables will be set up to accommodate everyone.
Guess which one will be the last honey to be sampled? Almond blossom honey. That's because of the aftertaste.
Honey-tasting is a popular activity at Briggs Hall during the UC Davis Picnic Day. (Photo by Kathy Keatley Garvey)
Honey bee heading toward almond blossom. Almond blossom honey will be one of the honeys to be sampled at the UC Davis Picnic Day. (Photo by Kathy Keatley Garvey)
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