Research entomologist Daniel Hasegawa of the Crop Improvement and Protection Research Unit, Agricultural Research Service, U. S. Department of Agriculture, will speak on "Landscape and Molecular Approaches for Managing Thrips and Thrips-Transmitted Viruses in the Salinas Valley" at the UC Davis Department of Entomology and Nematology's first seminar of the winter quarter on Wednesday, Jan. 20.
"In 2019-2020, lettuce production in the Salinas Valley of California was devastated by thrips-transmitted impatiens necrotic spot virus (INSV)," Hasegawa says in his abstract. "Due to the inherent challenges in managing thrips using conventional chemical tactics, and no direct means for managing the virus, there is a strong need for new management strategies. This seminar will provide an overview of (1) the challenges in managing thrips and INSV in lettuce production, (2) what we've learned about the epidemiology of thrips and INSV, and (3) opportunities to improve cultural practices and develop biotechnology tools, such as RNAi for managing thrips and INSV in the Salinas Valley."
Hasegawa joined the Salinas USDA-ARS team in May 2019 after serving as a postdoctoral research associate (molecular biology) for three years with USDA-ARS in Charleston, S. C. He specializes in vector entomology, molecular biology and biotechnlogy. "My lab uses a variety of techniques to understand insect vector-virus relationships that impact plant health and agriculture," he says on Linked In. "We use molecular, genetic, and epidemiological concepts to understand drivers of vector-borne transmission of pathogens and utilize genetic technologies (e.g. RNAi and CRISPR), to improve agriculture productivity and sustainability."
Hasegawa received his bachelor of science degree in biochemistry in 2007 from UC Riverside and his doctorate in biology from Clemson University in 2013.
The mission of the Crop Improvement and Protection Research Unit is to improve germplasm of lettuce, spinach and melon, determine basic biology of viral, fungal and bacterial diseases affecting these crops, develop alternatives to methyl bromide as a soil fumigant for control of soilborne pests in strawberry and vegetables, reduce postharvest losses of lettuce, develop scientifically based organic crop production practices, and develop methods for control of weeds. See more on the Pacific West Area website./span>
All seminars will be held on Wednesdays at 4:10 PM (PST). Zoom links will be accessible via a Google form link.
Wednesday, Jan. 20
USDA-ARS, Crop Improvement and Protection Research: Salinas, Calif.
Title: "Landscape and Molecular Approaches for Managing Thrips and Thrips-transmitted Viruses in the Salinas Valley of California."
Google form link to access the seminar
Host: Ian Grettenberger
Wednesday, Jan. 27
Charissa De Bekker
University of Central Florida, Biology Department
Title: "What Makes a Zombie Ant Tick? Connecting Genomes with Behavioral Phenomes in Ants, Manipulated by a Fungal Parasite."
Host: Ian Grettenberger
Wednesday, Feb. 3
University of Texas, Austin, Department of Integrative Biology
Title: "Plant-Insect Interactions and Ecosystem Services in the Context of Global Change"
Host: Charlie Nicholson, postdoctoral researcher, Neal Williams lab and Elina Lastro Niño lab
Wednesday, Feb. 10
UC Santa Cruz, Environmental Studies Department
Host: Marshall McMunn, postdoctoral fellow, Rachel Vannette lab
Wednesday, Feb. 17
Yale University, Department of Epidemiology of Microbial Diseases
Host: Geoff Attardo, assistant professor
Wednesday, Feb. 24
Pennsylvania State University, Department of Entomology
Host: Ian Grettenberger
Wednesday, March 3
University of Nevada, Reno, Department of Biochemistry and Molecular Biology
Host: Geoff Attardo, assistant professor
Wednesday, March 10
University of New England, School of Environmental and Rural Science
Host: Neal Williams, professor
For questions, contact Grettenberger at email@example.com.
Charlie Casey Nicholson photographed a black-tailed bumble bee, Bombus melanopygus, in a manzanita patch at 3:10 p.m., Thursday, Jan. 14 in the UC Davis Arboretum and Public Garden to claim the honor. The site is near Old Davis Road.
He noted this was his seventh observation field trip to look for the first bumble bee of the year. He had searched six previous times (three 10-minute observations on the manzanita on each of two other days, Jan. 6 and 7).
The contest seeks a photograph--not a specimen--of the year's first bumble bee within the two-county area of Yolo and Solano, said coordinator Lynn Kimsey, director of the Bohart Museum and UC Davis professor of entomology.
As the winner, Nicholson will receive a special Bohart bumble bee coffee cup and a face mask, said Kimsey.
Nicholson, a researcher in the UC Davis Department of Entomology and Nematology labs of Professor Neal Williams, a pollination ecologist, and Extension apiculturist Elina Lastro Niño, is a 2015 alumnus of The Bee Course, where Robbin Thorp, a UC Davis distinguished professor of entomology, taught from 2002 through 2018. The nine-day intensive workshop, geared for conservation biologists and pollination ecologists and considered the world's premiere native bee biology and taxonomic course, takes place annually in Portal, Ariz., at the Southwestern Research Station, part of the American Museum of Natural History, N.Y.
"It is truly an honor to win the contest," said Nicholson. "I was a student of Robbin's during the 17th annual Bee Course in Portal, Ariz. I will never forget him wielding his canopy net."
"The first night (8/17/2015) he gave the opening seminar--a whirlwind tour of what makes a bee. It was so exciting to be at this research station surrounded by people whose names you've read all the time.”
“Robbin helped me learn to pay close attention to the arolia of Anthidiini. As we moved into identifying bees, Robbin was a great teacher as we worked through the dichotomous keys in The Bee Genera of North and Central America: Hymenoptera Apoidea. He always had some morphological signpost that wouldn't give away the 'answer' but would certainly guide you in the right direction."
Charlie holds a bachelor of arts degree in biology (evolution, ecology and behavior), 2010, cum laude, from Skidmore College, Saratoga Springs, New York. He received his doctorate in natural resources in 2018 from the University of Vermont, where he was a Gund Institute for Environment graduate fellow. In his dissertation, he examined how landscape and farm management affect the multiple benefits provided by wild bees.
Nicholson joined UC Davis as a postdoctoral scholar in the spring of 2019, and receives funding support from the USDA Invasive Species and Pollinator Health Unit. He recently co-authored a paper, “Natural Hazard Threats to Pollinators and Pollination,” published in the journal Global Change Biology, that analyzed 117 published research papers on natural hazards that threaten pollinators and pollination.
His other interests include multiple dimensions of biodiversity, conservation planning, agricultural management, ecosystem services, and community and landscape ecology.
Thorp, a member of the UC Davis entomology faculty for 30 years, from 1964-1994, died June 7, 2019 at his Davis home at age 85. A tireless advocate of pollinator species protection and conservation, Thorp was known for his expertise, dedication and passion in protecting native pollinators, especially bumble bees, and for his teaching, research and public service. He was an authority on pollination ecology, ecology and systematics of honey bees, bumble bees, vernal pool bees, conservation of bees, native bees and crop pollination, and bees of urban gardens and agricultural landscapes.
He achieved emeritus status in 1994 but continued to engage in research, teaching and public service until a few weeks before his death. In 2014, he co-authored two books Bumble Bees of North America: An Identification Guide (Princeton University, 2014) and California Bees and Blooms: A Guide for Gardeners and Naturalists (Heyday, 2014).
Every summer from 2002 to 2018, Thorp volunteered his time and expertise to be one of the instructors in The Bee Course. In a 2013 interview with the UC Davis Department of Entomology and Nematology, Thorp said he loved teaching at The Bee Course and praised the co-instructors and students. "Ron McGinley who got his undergraduate degree at UC Davis does most of the initial student contact and scheduling for the course. Steve Buchmann, who got his PhD at UC Davis in 1978, is one of the instructors. There are usually about eight instructors and 22 participants for the course. Most of the time is spent in the lab identifying bees to genus. At least three days are spent in the field so students can see various bees doing their thing, collect them and bring them back to the lab to identify them. It is a great experience for students to interact with instructors and especially with their peers from around the world. Instructors all donate their time to teach in the course, but benefit from the chance to get together with colleagues and a new cohort of interesting students each year. Every class is different (that is, it takes on its own personality) and each student brings something new and different to the mix."
Highly honored by his peers, Thorp was named a fellow of the California Academy of Sciences, San Francisco in 1986; recipient of the Edward A. Dickson Emeriti Professorship of UC Davis in 2010; and recipient of the UC Davis campuswide Distinguished Emeritus Award in 2015. Other honors included: member of the UC Davis Bee Team that won the 2013 Team Award from the Pacific Branch, Entomological Society of America. In addition, he served as a past president (2010-2011) of the Davis Botanical Society, and chair (1992-2011) of the Advisory Committee for the Jepson Prairie Reserve, UC Davis/Natural Reserve System.
The three-year grant, titled "Strengthening Honey Bee Health and Crop Pollination to Safeguard Food Availability and Affordability" and headed by principal investigator Boris Baer, a UC Riverside professor of entomology, also includes the San Diego and Merced campuses. “I'm very excited about so many different kinds of bee expertise joining forces through this project,” Baer said.
"Most excitingly, this funding will not only support research that will help improve pollinator health so crucial for California's agriculture, but it will provide opportunities for training of students and postdoctoral scholars,” said co-principal investigator, Extension apiculturist Elina Lastro Niño of the UC Davis Department of Entomology and Nematology, which operates the Harry H. Laidlaw Jr. Honey Bee Research Facility. “Work focused on improving honey bee stocks via novel tools aligns well with ongoing work in the Niño lab and will further cement collaborations with beekeepers and growers.”
Honey bees pollinate more than 80 agricultural crops, accounting for about a third of the American diet. Researchers attribute the widespread collapse of bee colonies over the past decade to several factors, including pesticide exposure, spread of parasites and pathogens, habitat destruction and environmental changes. Population declines have resulted in decreased pollination services and increased food prices. Worldwide declines continue despite substantial efforts of researchers, beekeepers, conservationists, and growers to identify the issues facing pollinator communities and develop innovative solutions.
The UC scientists plan a three-pronged approach to resolve the issue: develop better breeding programs, better medications and treatments, and better tools to monitor bee health in the hives. Small “listening and smelling” devices will be placed inside the hives to monitor bee health.
In the successful grant proposal, part of the Multicampus Research Programs and Initiatives (MRPI), the researchers wrote:
"Safeguarding honey bees and their pollination services requires beekeepers to be better able to manage the health and survival of colonies, which requires research into the causal factors and interactions affecting pollinator health, and the development and implementation of novel tools in close collaboration with industry partners. To do this, we will form a California wide, cross disciplinary research network and
- experimentally study the ecological and molecular factors and their interactions that affect honey bee health and their interactions to identify biomarkers of their health
- use the knowledge gained to develop and deliver new, effective solutions for stakeholders, including remote sensing of bee health, a marker-assisted breeding program, and the development of novel medications,
- build a research industry nexus to conduct collaborative research. We will also develop and deploy new extension and outreach modules that will be offered through UC Cooperative Extension statewide. We will support California beekeepers to build and maintain a sustainable and profitable beekeeping industry, which has implications for food security on a national level."
Niño, who works closely with California beekeepers, launched and directs the California Master Beekeeper Program, which uses science-based information to educate stewards and ambassadors for honey bees and beekeeping.
The co-principal investigators also noted in their grant proposal that "The current coronavirus pandemic and impending recession is putting more pressure on agriculture to provide sufficient and affordable food. Honey bees are key to such efforts, and supporting a California based beekeeping industry also decreases the state's dependence on managed pollination from elsewhere, thereby creating new jobs and income."
Funding also will help provide research opportunities for undergraduates, including underrepresented students, with the goal of ensuring that the pipeline of students who enter research, academia, industry, and multiple other professions reflects the diversity of the communities in which they learn and work.
Co-principal investigator James Nieh of UC San Diego, said he and his students will be testing how nutritional supplements may help bees that have been exposed to pesticides and on how to harness the natural honey bee microbiome against a very common bee gut disease.
“We want to use what evolution has already given us to deal with bee disease because this should be a more natural and sustainable approach,” said Nieh, a professor in the Section of Ecology, Behavior and Evolution, Division of Biological Sciences. “Researchers have also focused a great deal on the harms caused by pesticides and this has helped improve some aspects of regulation," he said in a UC San Diego news release. "But we need to develop treatments for bees that are exposed to these chemicals because we will not realistically be able to eliminate all pesticide use.”
Co-principal investigator Joshua Kohn of UC San Diego said research in his lab is aimed at understanding the complex genomes of feral honey bees in Southern California. These bees have genomes that are a complex mixture of genomes of honey bee varieties from Africa, Europe and the Middle East, Kohn said in a UC San Diego news release. He described the feral bees as "highly genetically diverse and ecologically successful." Their genomes, he pointed out, likely hold variation useful to breeding domesticated honey bees with increased levels of resistance to the common diseases that currently plague the honey bee industry.
“This network of bee researchers comprises a unique mixture of expertise that can apply highly multidisciplinary approaches to benefit the honey bee industry essential to the production of many of California's most economically important crops,” Kohn related.
Other co-principal investigators are Kerry Mauck, Tsotras Vassilis, and Kim Hyoseung, all of UC Riverside. Marilia Gaiarsa of UC Merced is a co-investigator.
Entomologist Vonny Martin Barlow of Blythe, formerly of the UC Division of Agricultural and Natural Resources (UC ANR) and the UC Statewide Integrated Pest Management Program (UC IPM)--and who most recently served an entomology project consultant with the UC Davis Department of Entomology and Nematology--passed away unexpectedly Dec. 9 in a Palm Springs hospital. He was 55.
Dr. Barlow, known for his expertise in insect pest management, including pests of rice, cotton and alfalfa, was the third graduate student of the late Larry Godfrey (1956-2017), Cooperative Extension entomologist, UC Davis Department of Entomology and Nematology.
In an email to friends and colleagues, Sonia Rios, area subtropical horticulture advisor, UC Cooperative Extension, Riverside and San Diego counties, related that Dr. Barlow "passed away unexpectedly on Dec. 9 from a massive heart attack." Services (limited to five people due to the COVID-19 pandemic precautions) will take place Dec. 28 in Palm Springs.
Born May 18, 1965 in Mountain View, Calif., Vonny received a bachelor of science degree in biological sciences, with a special emphasis in entomology, from San Jose State University in 1993; a master's degree in plant protection and pest management from UC Davis in 1997; and a doctorate from Virginia Polytechnic Institute and State University (Virginia Tech) in 2006.
"From there, I went on to North Carolina State University where I gained extensive research and extension experience as a tree fruit post-doc," he related on Linked In. "I worked on evaluating the 'whole-farm' approach to mating disruption used in apple orchards to manage codling moth and oriental fruit moth. I then joined the Agriculture and Natural Resources Division of the University of California in 2009 as an entomology/IPM/crop production farm advisor for Riverside County until 2018. I worked in an area predominated by 75 percent alfalfa rotated with other crops like cotton, mixed melons, lettuce and broccoli."
Dr. Barlow left UC ANR in 2016 to become a pest management consultant, working both with industry and agricultural partners. He served as an affiliated IPM advisor from 2012 to 2017, and was a leader and author of the rice, cotton, and alfalfa Pest Management Guidelines. He did research on biological control and IPM of invasive insects and plants of field and forage agroecosystems.
At UC Davis, where he received his master's degree, he served as a graduate research assistant in the Godfrey lab. His master's thesis project "involved studying the impact of early spring weeds on Lygus bug population dynamics and their natural enemies in the alfalfa hay cropping system," he wrote on LinkedIn. "Alternative sources for feeding and reproduction (e.g., weedy plants) have shown to have a profound impact on Lygus bug populations. I was able to develop recommendations for management of weedy plants in alfalfa that had a two-fold benefit. The first is reduction of crop loss in susceptible crops (e.g., cotton) to Lygus bugs in adjacent fields. The second is reduction of the amount of pesticides used to control Lygus bug populations."
Dr. Barlow co-chaired the Godfrey celebration of life on June 7, 2017 at the Putah Creek Lodge, UC Davis, with distinguished professor and IPM specialist Frank Zalom of the UC Davis Department of Entomology and Nematology.
He is survived by his mother, Janice, and a brother, Cary, both of San Jose.