Posts Tagged: Neal Williams
What are the indirect effects of parasites and pesticides on pollination service?
Ecologist Sandra Gillespie, a postdoctoral researcher in the Neal Williams lab, UC Davis Department of Entomology and Nematology, will present the results of her research at a departmental seminar from 12:10 to 1 p.m., Wednesday, Oct. 16 in 122 Briggs Hall. It will be recorded for later posting on UCTV.
“Whether in natural or agro-ecosystems, researchers are increasingly viewing positive interactions such as pollination in a broader context rather than as isolated pair-wise interactions,” Gillespie says. “In natural ecosystems, my research has explored how incidence of parasites and diseases of native bumble bees may affect pollination of plants in old-field meadows in Massachusetts. High incidence of certain parasites reduced pollination of bumble bee-dependent wild plants, suggesting that parasitism may impact pollination service to native plants and crops.”
“In a more applied context, I examined the effects of field management decisions, including pesticide use and irrigation practices, on pollination service in onion seed production in California. High insecticide use, even pre-bloom, as well as reduced irrigation negatively impact pollinator visitation in this crop, highlighting the importance of considering the indirect effects of management on the pollination process in agro-ecosystems.”
Gillespie delivered a similar presentation at 2012 meeting of the Pacific Branch of the Entomological Society of America.
Gillespie, a postdoctoral researcher at UC Davis since 2011, received her bachelor’s degree in biology from Simon Fraser University, Canada, and her doctorate in both entomology and organismic and evolutionary biology from the University of Massachusetts, Amherst.
As a postdoc in the Williams lab, Gillespie is examining the mechanisms behind yield declines in hybrid onion seed production in California, with the goal of developing sustainable recommendations for producers.
Gillespie will be leaving UC Davis the first week of December; she has accepted a position at Simon Fraser University (starting Jan. 1) to work as a postdoc with Elizabeth Elle in the biology department. "I'll be studying pollinator-mediated selection in a community and landscape context," she said.
Her research on “Factors Affecting Parasite Prevalence among Wild Bumble Bees,” was published in Ecology Entomology, 2010. She has also published her work in the American Journal of Botany (“Variation in the Timing of Autonomous Selfing among Populations that Differ in Flower Size, Time to Reproductive Maturity, and Climate,” 2010) and Annals of the Entomological Society of America (“Laboratory Rearing of North American Tiger Beetles (Coleoptera, Carabidae: Cicindelinae,” 2011).
Pending publication in the Journal of Economic Entomology: “Insecticide Use in Hybrid Onion Seed Production Affects Pre- and Post-Pollination Processes,” the work of Gillespie, Neal Williams, Rachael Long and Nicola Seitz.
UC Davis ecologist Sandra Gillespie answers a question at a recent pollination workshop in Woodland. (Photo by Kathy Keatley Garvey)
Honey bee pollinating an onion umbel. (Photo by Sandra Gillespie)
As summer nears its end, the honey bees are hungry.
That's why Extension apiculturist Eric Mussen of the UC Davis Department of Entomology and Nematology advocates that we plant flowers for late summer and fall to help the bees. Often we think of spring as the season for planting bee plants, but mid- to late summer and fall is when they really need our help.
Malnutrition is one of the factors suspected in colony collapse disorder (CCD), the mysterious malardy in which adult bees abandon the hive, leaving behind the queen bee, immature brood and food stores. Other factors in the declining bee population include pesticides, pests, diseases and stress.
If you look around, you'll see bees foraging in Northern California on blanket flower (Gaillardia), sedum (family Crassulaceae) and late-blooming towers of jewels (Echium wildpretii).
And the lavenders, salvias (sages) and the mints.
Current resources? The Xerces Society for Invertebrate Conservation features plant lists on its site. The UC Berkeley Urban Bee Lab maintains a wealth of information about plants and pollinators on its site. There's even a Bee Smart app, offered free by the Pollinator Partnership, that will enable you to browse through about 1000 native plants.
Some of my favorite honey bee plants: the lavenders, the salvias, sunflowers, catmint, sedum, blanket flowers, oregano, artichoke, zinnias, cosmos, borage, bush germander, buckwheat, basil, ceanothus, coneflowers, seaside daisies, red hot poker, and of course, the tower of jewels, which, in height, towers over them all.
A honey bee foraging on a blanket flower, Gaillardia. (Photo by Kathy Keatley Garvey)
A honey bee on sedum. (Photo by Kathy Keatley Garvey)
A honey bee on a blanket flower (Gaillardia). (Photo by Kathy Keatley Garvey)
Honey bee heading toward a tower of jewels, Echium wildpretii. (Photo by Kathy Keatley Garvey)
Congrats to “The Bee Team” at the University of California, Davis.
The one-of-a-kind team, comprised of five Department of Entomology faculty members, received the coveted team award from the Pacific Branch, Entomological Society of America (PBESA), for their collaborative work specializing in honey bees, wild bees and pollination issues through research, education and outreach.
Their service to UC Davis spans 116 years.
The “Bee Team” is comprised of Extension apiculturist Eric Mussen; systematist/hymenopterist Lynn Kimsey, director of the Bohart Museum of Entomology and professor of entomology who coordinated the development and installation of a landmark bee friendly garden; and native pollinator specialist Robbin Thorp, emeritus professor of entomology; pollination ecologist Neal Williams, assistant professor of entomology who specializes in pollination and bee biology; and biologist/apiculturist Brian Johnson, assistant professor of entomology who specializes in bee communication, bee behavior and bee health.
PBESA represents 11 states, seven U.S. territories, and parts of Canada and Mexico.
Thorp, who retired from the university in 1994, continues to work full-time on behalf of the bees, and has tallied 49 years of service to UC Davis. Mussen, who will retire in June of 2014, has provided 37 years of service; Kimsey, 24; Williams, 4 and Johnson, 2.
“The collaborative team exceptionally serves the university, the state, the nation, and indeed the world, in research, education and public service,” wrote nominator Michael Parrella, professor and chair of the UC Davis Department of Entomology. “The Bee Team is really the ‘A’ team; no other university in the country has this one-of-a-kind expertise about managed bees, wild bees, pollination, bee health, bee identification, and bee preservation. Honey bee health is especially crucial. Since 2006 when the colony collapse disorder surfaced, we as a nation have been losing one-third of our bees annually. Some beekeepers are reporting 50 to 100 percent winter losses. The importance of bees cannot be underestimated: one-third of the food we eat is pollinated by bees.”
Among those lending support to The Bee Team through letters were the Mary Delany, interim chair of the UC Davis College of Agricultural and Environmental Sciences; AnnMaria "Ria" de Grassi, director of federal policy, California Farm Bureau Federation; Christi Heintz, executive director of Project Apis m. and the Almond Board of California Task Force Liaison; and Mace Vaughn, pollinator conservation program director of the Xerces Society for Invertebrate Conservation.
The Bee Team (from left) Eric Mussen, Neal Williams, Robbin Thorp, Lynn Kimsey and Brian Johnson. (Photo by Kathy Keatley Garvey)
The seventh annual Bee Symposium, a fundraiser for Partners for Sustainable Pollination, will take place on Saturday, March 9 in Sebastopol.
That's when five speakers will talk about pollinator habitat--what's good to plant and why. The theme is "Pollinator Habitat and Forage."
The event takes place from 8:30 a.m. to 4:30 p.m. in the Sebastopol Center for the Arts, located in the Veterans' Building at 282 South High St., Sebastopol.
Pollination ecologist Neal Williams, assistant professor of pollination and bee biology, UC Davis Department of Entomology and Nematology, will be among the speakers at the all-day event.
Williams will discuss "Development of Wildflower Mixes to Promote Native Pollination in Agriculture."
A core faculty member in the UC Davis Agricultural Sustainability Institute, Williams focuses his research on pollination that spans the disciplines of conservation biology, behavioral ecology and evolution. One of his primary research foci is on sustainable pollination strategies for agriculture. This work is critical given ongoing pressures facing managed honey bees and reported declines in important native pollinators such as bumble bees.
He and his colleagues explore the role of wild native bees, honey bees and other managed species as crop pollinators and the effects of landscape composition and local habitat quality on their persistence.
Williams' continuing goal is to provide practical information that can be used to improve the long- term stability of pollination for agriculture in California, as well as promote pollinator conservation and management.
Other speakers at the symposium will include bee industry expert Peter Borst of Biomedical Sciences, Cornell University. He will deliver two talks: "A Short History of Pollination" and "Pollinator Panorama." Borst is a regular contributor to the American Bee Journal.
Professor Gordon Frankie of UC Berkeley will discuss "Bees and Flowers: A Selective Love Affair.”
Master Gardener Cheryl Verettto will share “Plant 4 Bees: Help The Bees by Planting All 4 Seasons”
Farmer Paul Kaiser of the Singing Frogs Farm will cover “Farming for Pollinators: How Can We Humans Produce Nutrient Dense Food While Improving the health, Vitality and Resiliency of Mother Nature?”
Tickets are $35 pre-sale or $45 at the door. Members receive a $5 discount. For more information or to purchase tickets, access http:// www.pfspbees.org/store or cash tickets may be purchased at Beekind, 921 Gravenstein Highway South., Sebastopol.
For general information, contact Jeanine Robbins at firstname.lastname@example.org or (707) 824-2905.
Blue pollen from a bird's eye blossom covers a honey bee. (Photo by Kathy Keatley Garvey)
"Landscape Conservation for Rare Insects!"
That's the title of a seminar to be hosted by the UC Davis Department of Entomology on Wednesday, Jan. 23.
Nick Haddad, the William Neal Reynolds Professor of Biology at North Carolina State University (NCSU), Raleigh, N.C., will speak from 12:10 to 1 p.m., in Room 1022 of the Life Sciences Addition, corner of Hutchison and Kleiber Hall drives. Pollination ecologist Neal Williams, assistant professor of entomology, will introduce him.
The seminar promises to be riveting.
"I will discuss studies of landscape approaches and how they may be used to conserve rare insects, focusing on rare butterflies," Haddad said. "In one experiment, we are studying how landscape corridors may be used to increase insect dispersal and population viability. In a second experiment, we are asking whether habitat restoration creates population sources, or instead creates unintended population sinks for rare butterflies. These experimental approaches that consider mechanisms of dispersal and demography can be used to inform large scale conservation and restoration in a changing world."
One of his endangered subjects, found only in North Carolina, is a brown butterfly, Saint Francis satyr (Neonympha mitchellii francisci). See the photo below by Melissa McGaw.
Haddad recently launched a new website, Conservation Corridor, aimed at connecting science to conservation.
Haddad received his doctorate in ecology from the University of Georgia in 1997, and his bachelor's degree in biology, with honors, from Stanford University in 1991. He served as a researcher in the Guatemala Program, Center for Conservation Biology, Stanford University, from 1990 to 1997, and as a post-doctoral researcher at the University of Minnesota from 1997-1999 before joining the the North Carolina State University faculty in 1999.
He advanced from assistant professor of zoology to associate professor of biology to professor of biology. In between, he headed west to UC Davis to become a sabbatical scholar, hosted by Marcel Holyoak, from 2006-2007.
Haddad has published his work in Conservation Biology, Journal of Insect Conservation, Ecology, Ecology Letters,Conservation Genetics, PLoS ONE, Proceedings of the National Academy of Sciences, Population Ecology, Science, and Ecography, among others.
Assistant professors Brian Johnson and Joanna Chiu are coordinating the Department of Entomology's winter seminars. All the winter seminars are being video-recorded under the direction of James R. Carey and will be posted at a later date on UCTV.
Meanwhile, there's lots of good information on his Conservation Corridor website. You can also "like" his Conservation Corridor Facebook page.
Nick Haddad (Photo by Melissa McGaw)
Saint Francis satyr (Neonympha mitchellii francisci). (Photo by Melissa McGaw)