- Author: Kathy Keatley Garvey
John Mola, a fourth-year doctoral student in the Neal Williams lab, UC Davis Department of Entomology and Nematology, won the $850 first-place award with his presentation on "Bumble Bee Movement and Landscape Genetics."
“In conservation biology and ecological study, we must know the distances organisms travel and the scales over which they go about their lives,” Mola said of his work. “To properly conserve species, we have to know how much land they need, how close those habitats need to be to each other, and the impact of travel on species success. For instance, if I'm told there's free burritos in the break room, I'm all over it. If the 'free' burritos require me traveling to Scotland, it's not worth it and I would spend more energy (and money) than I would gain. For pollinators, it's especially important we understand their movement since the distances they travel also dictates the quality of the pollination service they provide to crop and wild plants."
“Despite this importance, we know comparatively little about the movements of bees--the most efficient of pollinators--due to the difficulty of tracking individuals," Mola explained. "Unlike birds or large mammals, we can't just attach large radio collars and follow them around. As such, my work has focused on improving methods that we can use for study. I use a combination of landscape ecology and molecular genetics to identify the locations of siblings (colony-mates) in landscapes. From that information, we can infer all sorts of useful information about the potential foraging range, habitat use, population size, etc. It's a very exciting time to be working on these topics as the availability of new genetic and GPS technologies allows us to answer or re-address scientific and conservation issues with bees.”
In his abstract, Mola related: "Understanding the way organisms move through environments is crucial to our ability to monitor, study, or conserve species--after all, a habitat that is wholly inaccessible is no habitat at all. However, studies of wild bee movement lag far behind those of many numerous individuals. This limits our ability to answer basic questions like how large of an area is needed for individuals to forage? Or how close do conservation areas need to be connected? For honey bees, we can answer these questions through the study of their infamous waggle dance--which reveals the distance and director of their travel. However, most bees do not possess these complex communication behaviors and so our ability to understand their patterns of movement has rlied on mark-recapture, observation, and nascent advances in radar tracking or molecular methods."
He went on to share that "Here, I present a novel methodology for studying bumble bee movement using high-throughput sequencing techniques. This method provides substantial improvement in the accuracy of estimations while simultaneously giving us insight into fine-scale population genetics. Both factors can be important in the conservation and study of pollinators and our ability to 'keep bees healthy." I demonstrate the method's utility by presenting a few case studies of its implementation, and the insight we gain into wild bumble bee movement."
Judges were Tom Seeley, professor at Cornell University, the symposium's keynote speaker; speaker Santiago Ramirez, assistant professor of evolution and ecology at UC Davis, and native pollinator specialist Robbin Thorp, distinguished emeritus professor at UC Davis. Master beekeeper/journalist Mea McNeil of San Anselmo served as the timer and coordinator for the panel.
Mola, who aims for a career "to run a collaborative research program as a faculty member at a research-oriented university,” received his bachelor's degree in environmental studies in 2011 from Florida State University,Tallahassee, and his master's degree in 2014 from Humboldt State University, Arcata, in biology.
Second place of $600 went to Maureen Page, a second-year Ph.D. student in Neal Williams lab for her research, “Impacts of Honey Bee Abundance on the Pollination of Eschscholzia californica (California golden poppy).”
Page presented her research on the impacts of honey bee abundance on native plant pollination. “While honey bees are economically important, they are not native to North America and may have negative impacts on native bees and native plant communities in certain contexts,” she related. “My research is ongoing, but preliminary results suggest that honey bee abundance may negatively affect the pollination of California poppies.”
In her abstract, Page wrote: "Many studies support the claim that introduced honey bees compete with native pollinators. However, little is known about how honey bee introductions will affect native plant communities and plant species' persistence."
Page, who seeks a career as a professor and principal investigator, received her bachelor's degree in biology from Scripps College, Claremont, Calif. in 2006, cum laude.
Other winners:
Third-Place, $300: Doctoral student Emily Kearney of UC Berkeley, for her research on “How Does Landscape Context Affect the Pollinator Community of Chocolate (Theobroma cacao)."
Fourth-Place (tie, $250 each): Doctoral student Jacob Francis of the University of Nevada, for his “A Sweet Solution to the Pollen Paradox: Nectar Mediates Bees' Responses to Defended Pollen” and Katie Uhl, a master's student, UC Davis Department of Food Science and Technology, for her “Determination of Volatile Organic Compounds in Mono-Floral Honey Using HS-SPME/GC/MS."
Fifth-Place ($150): Doctoral student Kimberly Chacon, UC Davis Geography Graduate Group, for her “A Landscape Ecology Approach to Bee Conservation and Habitat Design."
The annual Bee Symposium is sponsored by the UC Davis Honey and Pollination Center, headed by director Amina Harris, and the UC Davis Department of Entomology and Nematology, chaired by nematologist and professor Steve Nadler. Neal Williams serves as the co-faculty director of the Honey and Pollination Center.
- Author: Kathy Keatley Garvey
The tsetse fly (Glossina genus), found in sub-Saharan Africa, transmits Trypanosomiasis, a parasitic disease that we commonly refer to as "sleeping sickness."
Sleeping sickness occurs in 36 sub-Saharan Africa countries, but due to sustained control efforts, the number of new cases is decreasing, according to the World Health Organization (WHO): "In 2009 the number reported dropped below 10,000 for the first time in 50 years, and in 2015 there were 2804 cases recorded."
Enter Alvaro Acosta-Serrano of Liverpool School of Tropical Medicine, England, who researches tsetse flies.
Acosta-Serrano speaks on "A Hunger Game: Exploiting Tyrosine Degradation for Tsetse Control" at the next UC Davis Department of Entomology and Nematology seminar, set for 4:10 p.m., Wednesday, March 14 in 122 Briggs.
His research focuses on fundamental aspects of the biology of kinetoplastid parasites and their vectors, and on developing molecular tools to control and prevent parasite transmission in disease-endemic areas.
In his abstract, Acosta-Serrano writes: "My lab uses a combination of biochemistry, molecular genetics and cell biology to study the interactions between African trypanosomes and tsetse flies. These parasites undergo a complex life cycle in the tsetse that involves migration and colonization of different fly tissues. Establishment of a trypanosome infection occurs after the parasites reach the ectoperitrophic space (ES), which is in direct contact with the gut epithelium and is separated from the lumen by the peritrophic matric (PM). The tsetse PM works a barrier for oral pathogens and harmful molecules present in the blood meal. Although unproven, the most accepted hypothesis of how T. brucei reaches the ES is by direct crossing of the tsetse PM."
"My lab studies the reproductive biology and genetics of tsetse flies and other disease vectoring insects," Attardo related. "Tsetse flies are very unique in that they lactate and give birth to live young. We are exploring the fascinating physiological processes underlying the strange reproductive biology of this important vector insect. This work covers multiple areas of reproduction in tsetse including nutrition; analysis of genes associated with milk production; the molecular and biochemical interactions between male and female flies and the role symbiotic bacteria play in tsetse reproduction. We hope to eventually use what we learn to enhance current tsetse control efforts by exploiting their reproductive biology."
Attardo, who joined the faculty last year, holds a doctorate in genetics from Michigan State University and worked for 13 years at the Yale School of Public Health in the Department of Epidemiology of Microbial diseases, first as a postdoctoral associate and then as a research scientist. (See feature story)
The UC Davis Department of Entomology and Nematology hosts weekly research seminars at 4:10 p.m. on Wednesdays in 122 Briggs Hall, off Kleiber Hall Drive. The seminar on tsetse flies is the last of the winter quarter series. Coordinators are assistant professor Rachel Vannette; Extension apiculturist Elina Lastro Niño and Ph.D student Brendon Boudinot.
- Author: Kathy Keatley Garvey
They go together like superman (Clark Kent) and supervillian (Lex Luthor). Or like Coccinellidae (lady beetles) and Aphididae (aphids).
Fact is, IPM specialist Frank Zalom, a distinguished professor of entomology and Extension entomologist at the University of California, Davis, targets pests. He solves pest problems the IPM way--using effective, biologically based pest management approaches.
Over the last four decades, he has honed an incredible career. Absolutely incredible.
And now he's receiving a well-deserved lifetime achievement award at the Ninth International IPM Symposium March 19-22 in Baltimore.
“Dr. Zalom continues to advance the science and implementation of IPM,” said Steve Nadler, professor and chair of the UC Davis Department of Entomology and Nematology. “His integrity, service and respect for all are legendary.”
At the Baltimore seminar, Zalom will deliver a presentation on “The ‘I' in IPM: Reflections on the International IPM Symposium and Evolution of the IPM Paradigm.” He will reflect on his 16 years co-chairing the Association of Public and Land-Grant Universities' National IPM Committee, the committee that launched the symposia. Zalom also played a role in organizing the first four IPM Symposia.
In addition, Zalom and fellow members of the UC European Grapevine Moth Team will receive an award of excellence for contributing to eradication of the pest in 2016--only six years after its discovery in California vineyards.
The only other lifetime achievement award recipient this year also has a UC connection: Peter Goodell, UC IPM advisor emeritus, affiliated with the Kearney Agricultural Research and Extension Center. And a longtime friend and colleague of Frank Zalom.
Zalom, who holds a doctorate in entomology from UC Davis, teaches arthropod pest management, targets pests using IPM methods, and develops major agricultural IPM programs for California's specialty crops.
Zalom is a past president of the 7000-member Entomological Society of America; co-founder of the International IPM symposia; and for 16 years, directed the University of California Statewide IPM Program, considered “the gold standard” of IPM programs.
Zalom's 16 years at the helm of the UC IPM program set the standard, nationally and globally, for subsequent IPM programs. He established a statewide, interdisciplinary IPM team of Cooperative Extension farm advisors, and oversaw development of the website's online degree-day tool, and the database of degree-day models that remains widely used by California's county-based extension staff and crop consultants.
“Advancing the science and implementation of IPM will reduce the impact of pests and pest control on agriculture and the environment,” Zalom said. “This is critical in California, where we grow more than a third of our nation's vegetables and two-thirds of our nation's fruits and nuts. California agriculture is a $42.6 billion industry that generates at least $100 billion in related economic industry.”
The Zalom laboratory has helped establish biologically based IPM programs for arthropod pests of California tree, vine, small fruit and vegetable crops valued at over $19 billion. The lab has addressed 17 invasive species introductions, among them southern green stink bug, silverleaf whitefly, glassy-winged sharpshooter, olive fly, invasive saltcedar, light brown apple moth, spotted wing drosophila, and most recently European grape vine moth, brown marmorated stink bug and bagrada bug. Specific programs have reduced insecticide use and pesticide runoff into surface waters, and resulted in more effective management of several key and invasive pests of specialty crops.
Zalom interacts broadly with research colleagues, extension educators, growers, consultants, environmental groups, and public agency personnel throughout the state, nation and world to advance the science and use of IPM. He has served on scores of national ad hoc committees of agencies and organizations that shaped IPM policy and directions. He was recently appointed to a new Council for Agricultural Science and Technology (CAST) task force that will produce a white paper on behalf of the organization on Integrated Pest Management. He previously served on the task force for the CAST Issue Paper, “Feasibility of Prescription Pesticide Use in the United States."
Zalom's professional goals are four-fold (1) to solve pest problems using effective, biologically based pest management approaches; (2) to provide IPM leadership at the regional, state, national and international levels, (3) to maintain a vigorous cutting edge research program in entomology, especially related to IPM and invasive species; and (4) to educate a new generation of IPM practitioners through effective undergraduate teaching and graduate student mentoring.
Zalom has pursued his goals through a combination of fundamental studies related to pest biology, physiology, and community ecology; problem-focused, hypothesis-driven management research; and community-oriented extension efforts. “I focus my research on exploiting weaknesses in the biology of a pest species and its niche in the agroecosystem or the broader landscape,” Zalom said.
Among his many accomplishments:
- Appointed the first Editorial Board chair of ESA's new Journal of Integrated Pest Management.
- Founding member of the steering committee for the USDA-NIFA Pest Management Information Platform for Extension (ipmPIPE), an effort intended to assess risk of disease and insect outbreaks.
- Co-principal investigator of the USDA grant for $3.49 million that originally funded the Western IPM Center, located at UC Davis
- Numerous leadership roles in the Entomological Society of America (ESA), including president in 2014, member of ESA's presidential line for four years and Governing Board member for four years. He also served as the president of the Entomological Foundation and first chair of ESA's new Science Policy Committee.
- Author of more than 350 peer-reviewed journal articles, book chapters, and books, and has served as major professor for 12 Ph.D. students and seven master's students.
- Recipient of multiple awards at UC Davis including one for his outstanding mentoring, of women graduate students and post-doctoral scholars.
- Co-chair of the International Entomology Leadership Summit in 2016 in Orlando,Fla.
Zalom is a fellow of the California Academy of Sciences, Entomological Society of America, American Association for the Advancement of Science, and Royal Entomological Society (London). Previous IPM awards include the Entomological Foundation's IPM Team Award and Excellence in IPM Award, and the Perry Adkisson Distinguished Speaker Award from Texas A&M University. He is the only entomologist to be awarded the BY Morrison Memorial Medal for horticultural research, presented by the Agricultural Research Service of the U.S. Department of Agriculture, and the American Society for Horticultural Science.
Zalom, who joined the UC Davis faculty in 1980, shortly after receiving his doctorate of entomology in 1978, earned both his bachelor's and master's degrees in zoology and ecology from Arizona State University, Tempe.
Now it's off to Baltimore to receive a well-deserved honor. Congratulations, Frank Zalom, champion of IPM!
- Author: Kathy Keatley Garvey
What's that critter, as described by Lynn Kimsey, director of the Bohart Museum of Entomology and professor of entomology at the University of California, Davis?
A cuckoo wasp, and a rare one at that.
"Also, unlike most other chrysidid cuckoo wasps--which are lovely metallic blues and greens--they are flat brown," she says. "We have no idea how they make a living."
Kimsey has just published a journal article about that rare cuckoo wasp.
“The genus, Rhadinoscelidia, is a very weird chrysidid--kind of if you wanted to create something too weird to be real,” she said.
“Unlike other cuckoo wasps that lay their eggs in the nests of bees and wasps killing the unsuspecting hosts, these wasps may very well be parasites of walking stick eggs, like other members of their group,” Kimsey said.
The paper, Morphology and Review of the Odd Genus Rhadinoscelidia Kimsey, 1988 (Hymenoptera, Chrysididae, Loboscelidiinae) is published in current edition of the Journal of Hymenoptera Research.
Kimsey, an expert on wasps and the co-author of “Chrysidid Wasps of the World” (Oxford University Press) with entomologist Richard Bohart (1913-2007) reviewed the small chrysidid genus, Rhadinoscelidia Kimsey, 1988, which is “rarely collected and is the most oddly modified of the chrysidid wasps.”
To date, the genus is known only from Hainan Island (China), Thailand, Laos, West Java (Indonesia) and Malaysia (mainland). However, Rhadinoscelidia species probably occur throughout Southeast Asia, including Cambodia, Viet Nam, southern mainland China and Myanmar.
In the journal article, the professor described the new species, Rh.chaesonensis sp., and documented “peculiar deformations of the head” in one species, Rh. malaysiae Kimsey, 1988, from Thailand.
Rhadinoscelidia is one of two genera in the subfamily Loboscelidiinae, characterized by antennae that appear to be inserted horizontally on a shelf-like structure in the mid-face, Kimsey said.
But Rhadinoscelidia is even more unusual. Kimsey said the specimens from Thailand showed “marked and inconsistent asymmetry of the head.”
“The reason for this asymmetry is not clear,” she wrote. “However, it may affect the value of species distinctions based on facial dimensions, facial sculpturing, presence or absence of carinae (elevated ridge), and the shape and position of emarginations or projections on the back of the head.”
This study was made possible by the efforts of Michael Sharkey's Thailand Inventory Group for Entomological Research (TIGER) Project and the collaboration of Zai-fu Xu of South China Agricultural University; Doug Yanega of UC Riverside; and David Wahl, American Entomological Institute.
Kimsey, who administers the Bohart Museum of Entomology, which houses some eight million insect specimens, is a recognized global authority on the systematics, biogeography and biology of the wasp families, Tiphiidae and Chrysididae. A past president of the International Society of Hymenopterists and a member of the UC Davis faculty since 1989, she has authored more than 116 publications, and described more than 270 new species.
Kimsey's areas of expertise also include insect include insect biodiversity, urban entomology, civil forensic entomology, and arthropod-related industrial hygiene. She shares her knowledge of insects by consulting with international, national and state agencies. She also identifies thousands of insects every year for scientific collaborators, public agencies and the general public; and annually answers scores of questions about insects from the news media and public.
Kimsey received her undergraduate degree (1975) and doctorate (1979) in entomology from UC Davis, studying with major professor Richard Bohart, for whom the UC Davis insect museum is named.
- Author: Kathy Keatley Garvey
If you've been thinking about blanketing your garden with blanketflower (Gaillardia), you're in luck.
The UC Davis Arboretum and Public Garden is hosting a spring plant sale from 9 a.m. to 1 p.m., Saturday, March 10 at its Arboretum Teaching Nursery on Garrod Drive, located across from the School of Veterinary Medicine.
And Gaillardia will be available.
The one-ace nursery "has an incredible selection of Arboretum All-Stars, California natives, and thousands of other attractive, low-water plants perfect for creating a landscape alive with environmentally important pollinators," officials said.
Gaillardia is a favorite among pollinators, including honey bees, bumble bees, butterflies, hummingbirds, and syrphid or hover flies. You'll see them buzz, fly or flutter over to it. It's a member of the sunflower family Asteraceae, and native to North and South America. Named for M. Gaillard de Charentonneau, an 18th-century French magistrate and botany enthusiast, the plant is commonly called "blanketflower"--probably because it's reminiscent of the colorful blankets crafted by the native American Indians.
The genus includes dozens of species. Among those available at the UC Davis plant sale are Gaillardia 'Celebration'; Gaillardia 'Red Sun'; and Gaillardia x grandiflora or 'Arizona apricot.'
The plant sale is a "Membership Only Appreciation Sale," but you can become a member online now or at the gate on Saturday. Members receive 10 percent off their purchases and an additional $10-member appreciation gift. New members will receive an additional $10-off coupon as a thank you for joining. Davis Botanical Society members also receive a 10 percent discount on their plant sale purchases.
Here's a list (PDF) of what's being offered.
Plant them and they (the pollinators) will come. And sometimes you'll see a little predator-prey interaction--like a praying mantis lying in wait--but that's okay, too. Everybody eats!
