- Author: Kathy Keatley Garvey
There's plenty to love and purchase in the Bohart Museum of Entomology gift shop and on the UC Davis Entomology Graduate Student Association (EGSA) website.
EGSA members design insect and arachnid-themed T-shirts that climb, crawl, jump, roll, flutter, buzz, fly or otherwise position themselves on EGSA T-shirts. They can be viewed and ordered online at https://mkt.com/UCDavisEntGrad/.
EGSA president Mia Lippey, a doctoral student in the laboratories of UC Davis distinguished professor Jay Rosenheim and assistant professor Emily Meineke, says that currently, the designs offered are:
- The Beetles (in black or red)
- Entomo Gothic (a play on the American Gothic, in grey)
- Whip Scorpion (in lavender and black)
- Bee-Haw (in black)
- They See Me Rollin' (dung beetles rolling a poop, in heather blue)
- Et in Terra (dark green)
- Entomophagy (in blue and green)
At the Bohart Museum, located in Room 1124 of the Academic Surge Building, 455 Crocker Lane, the gift shop is stocked with everything from T-shirts, hooded sweatshirts, jewelry, books, posters, stickers, and note cards to lathe pens and insect-collecting equipment. See more at https://bohart.ucdavis.edu/line-gift-shop. Items may be purchased only in the gift shop, not online.
New items include tardigrade, bumble bee and monarch pens, monarch and stick insect stickers from a local artist, and a new mosquito stuffed toys or plushies, including a giant one that comes with viruses, said Brennen Dyer, the Bohart Museum's (specimen) collection manager.
Newest t-shirts are designed with tardigrades, also known as water bears. The Bohart Museum's tardigrade current collection includes some 25,000 slide-mounted specimens, and a six-foot-long concrete sculpture by Solomon Bassoff of North San Juan, Calif., graces the entrance to the Academic Surge building.
The Bohart Museum, founded in 1946, is directed by UC Davis distinguished professor Lynn Kimsey. It houses a global collection of eight million insect specimens. In addition to its gift shop, it is also the home of a live petting zoo. The Bohart is closed on specific days during the holiday season. See hours on the website.
- Author: Kathy Keatley Garvey
One UC Davis doctoral alumnus and 10 current or former members of the UC Davis Department of Entomology and Nematology are listed as among the world's top two percent of entomologists in a database announced by Stanford University with data from Elsevier's “science-wide author databases of standardized citation indicators.”
A separate list, gleaned from the main document, names the world's top entomologists, totaling 708. UC Davis alumnus Murray Isman, who received his doctorate in 1981 from UC Davis, studying entomology and toxicology, is ranked No. 2. He is the dean emeritus of the University of British Columbia's Faculty of Land and Food Systems and emeritus professor of entomology and toxicology at UBC.
The highest UC Davis entomologist/faculty member on that list is No. 22-ranked UC Davis distinguished professor Walter Leal of the Department of Molecular and Cellular Biology, former professor and chair of the Department of Entomology (now Department of Entomology and Nematology).
Other UC Davis entomologists on the list, in the order of ranking, are:
- Jay Rosenheim, No. 68
- Harry Kaya, 206
- Fumio Matsumura (1934-2012), 208
- James R. Carey, 232
- Robbin Thorp (1933-2019) 321
- Christian Nansen, 452
- Lester Ehler (1946-2016) 593
- Robert E. Page Jr., 548
- Frank Zalom, 557
Elsevier. Elsevier, a global information analytics company that helps institutions and professionals progress science, advance healthcare and improve performance, published its "science-wide author databases of standardized citation indicators" on Oct. 4, 2023. The ranking of scientists is at https://elsevier.digitalcommonsdata.com/datasets/btchxktzyw. It is a publicly available database "of top-cited scientists that provides standardized information on citations, h-index, co-authorship adjusted hm-index, citations to papers in different authorship positions and a composite indicator (c-score). Separate data are shown for career-long and, separately, for single recent year impact. Metrics with and without self-citations and ratio of citations to citing papers are given. Scientists are classified into 22 scientific fields and 174 sub-fields according to the standard Science-Metrix classification. Field- and subfield-specific percentiles are also provided for all scientists with at least 5 papers. Career-long data are updated to end-of-2022 and single recent year data pertain to citations received during calendar year 2022. The selection is based on the top 100,000 scientists by c-score (with and without self-citations) or a percentile rank of 2% or above in the sub-field. This version (6) is based on the October 1, 2023 snapshot from Scopus, updated to end of citation year 2022. This work uses Scopus data provided by Elsevier through ICSR Lab (https://www.elsevier.com/icsr/icsrlab). Calculations were performed using all Scopus author profiles as of October 1, 2023. If an author is not on the list it is simply because the composite indicator value was not high enough to appear on the list. It does not mean that the author does not do good work."
Scientists from China filtered the list to spotlight only entomologists. The list is at https://wxredian.com/art?id=9f6eea221698e282/.
- Author: Kathy Keatley Garvey
Danchin will speak on "Parasitic Success in the Absence of Sex: What Have We Learned from Nematode Genomes?" at 4:10 p.m., Monday, Nov. 20 in Room 122 of Briggs Hall. It also will be on Zoom. The Zoom link:
https://ucdavis.zoom.us/j/95882849672
Danchin, who specializes in genomics and adaptive molecular evolution, is with INRAE (French National Research Institute for Agriculture, Food and Environment) and is a senior scientist and scientific leader of the GAME team (Genomics and Adaptive Molecular Evolution) at ISA (Institut Sophia Agrobiotech), in Sophia-Antipolis, on the French Riviera.
"Root-knot nematodes are devastating plant parasites of worldwide importance. Interestingly, species that cause most damages reproduce entirely asexually," he writes in his abstract. "These nematodes are extremely polyphagous and have a wide geographic range. Theoretically, in the absence of sexual recombination animal species have lower adaptive potential and are predicted to undergo genome decay. To investigate how these species can be successful parasites on many hosts and in many places around the world, we have sequenced and analyzed their genomes. Out analysis confirmed these species are polyploid hybrids and the combination of several genotypes from different species might provide them with a general-purpose genotype. However, this does not explain how with a theoretically fixed genotype these species are able to overcome resistance genes or adapt to a new host. Therefore, we analyzed genomic variability across different populations and the possible mechanisms underlying genomic variations. In this presentation, I will provide an overview of our findings."
Etienne holds a doctorate in reproductive biology from the University of Paris (1980). He says on his website: "I am an evolutionary biologist working with genomes. I try to make biological sense of genomic singularities observed through comparative genomics. I have a special interest in plant parasites and I use bioinformatics as a tool to perform this research."
He lists his main research interests as:
- The impact of non tree-like evolution such as horizontal gene transfers and hybridization on species biology
- Evolution and adaptation of animals in the absence of sexual reproduction and the underlying mechanisms
- Genomic signatures of adaptation to a parasitic life-style
Seminar coordinator is Brian Johnson, associate professor, UC Davis Department of Entomology and Nematology. For Zoom technical issues, he may be reached at brnjohnson@ucdavis.edu. The list of seminars is posted here.
- Author: Kathy Keatley Garvey
Hammock, who holds a joint appointment with the Department of Entomology and Nematology and the UC Davis Comprehensive Cancer Center, was inducted along with 13 other Fellows on Nov. 14 during the annual Fellowship meeting. He joins the ranks of more than 500 Academy Fellows, a governing group of distinguished scientists and other leaders who have made notable contributions to scientific research, education, and communication.
“We're proud to announce 2023's distinguished pool of new Fellows—each of their contributions to science and society represent major advancements in their respective fields,” said Academy Dean of Science and Research Collections Shannon Bennett. “Our Fellows body is a group of future thinkers and innovators whose leadership inspires the next generation of scientists, science educators, story-tellers and change-makers. We look forward to forging a future with our new Fellows that advances the Academy's mission to regenerate the natural world through science, learning, and collaborative partnerships.”
Hammock, a member of the UC Davis faculty since 1980, was nominated by colleagues James R. Carey, UC Davis distinguished professor, and Robert E. Page Jr., UC Davis distinguished emeritus professor and emeritus provost of Arizona State University. The CAS Board of Trustees selects the Fellows.
Hammock discovered that regulating degradation of insect hormone mediators is as important as biosynthesis in development. He applied this toward the development of green chemical and the first recombinant viral pesticide. He asked if the same systems of metabolism of chemical mediators could be important in other species, notably man, resulting in the discovery of a new group of human chemical mediators. By inhibiting a key enzyme in this pathway, beneficial natural mediators increased there by showing benefit in treating multiple diseases including arthritis, cancer, Alzheimer's with the resulting drug candidates currently in human trials to treat pain.
Hammock co-discovered a human enzyme termed Soluble Epoxide Hydrolase (sEH), a key regulatory enzyme involved in the metabolism of fatty acids. It regulates a new class of natural chemical mediators, which in turn regulates inflammation, blood pressure and pain. Hammock and his lab have been involved in enzyme research for more than 50 years.
Hammock founded the Davis-based pharmaceutical company, EicOsis LLC, formed in 2011 to develop an orally active non-addictive drug for inflammatory and neuropathic pain. The former chief executive officer, he now serves on the board of directors.
He is a fellow of the National Academy of Inventors and the National Academy of Sciences., and the Entomological Society of America. He is the recipient of scores of awards, including the first McGiff Memorial Awardee in Lipid Biochemistry; and the Bernard B. Brodie Award in Drug Metabolism, sponsored by the America Society for Pharmacology and Experimental Therapeutics. At UC Davis he received the Distinguished Teaching Award and the Faculty Research Lectureship. In 2020, he received a Lifetime Achievement Award from UC Davis Chancellor Gary May.
Hammock has authored or co-authored more than 1,400 peer-reviewed publications and holds more than 95 patents in agriculture, environmental science and medicinal chemistry.
Hammock is known for his expertise in chemistry, toxicology, biochemistry and entomology. Early in his career, he founded the field of environmental immunoassay, using antibodies and biosensors to monitor food and environmental safety, and human exposure to pesticides. His groundbreaking research in insect physiology, toxicology led to his development of the first recombinant virus for insect control.
A native of Little Rock, Ark., Hammock received his bachelor's degree in entomology (with minors in zoology and chemistry) magna cum laude from Louisiana State University, Baton Rouge, in 1969. He received his doctorate in entomology-toxicology from UC Berkeley in 1973. Hammock served as a public health medical officer with the U.S. Army Academy of Health Science, San Antonio, and as a postdoctoral fellow at the Rockefeller Foundation, Department of Biology, Northwestern University, Evanston, Ill.
In the Army, he served as a medical officer at Fort Sam, Houston, and what he saw--severely burned people in terrible pain--made a lasting impression on him and steered him toward helping humankind.
2023 Fellows. Among the new CAS Fellows is Beth Rose Middleton Manning, professor of Native American Studies and designated emphasis chair at UC Davis who also was supported by the NIEHS Superfund Program. She focuses on environmental policy, cultural site protection, and climate adaptation with Native nations and communities.
Other new Academy Fellows:
Peter Alagona, PhD
Professor, Environmental Studies
University of California, Santa Barbara
Nicole Ardoin, PhD
Associate Professor, Social Sciences and Emmett Family Faculty Scholar
Stanford University
Junko Habu, PhD
Professor of Anthropology
University of California, Berkeley
Vanessa Handley, PhD
Director of Conservation Science and Global Conservation Consortium for Cycads Chair
University of California, Berkeley
Terry Jones, PhD
Professor of Anthropology
California Polytechnic State University
Marjorie Matocq, PhD
Foundation Professor, Department of Natural Resources and Environmental Science
University of Nevada, Reno
Derrick Rossi, PhD
CEO, Convelo Therapeutic
CEO, New York Stem Cell Foundation
Partner, Castle Rock Entertainment
Harvard University
Robert Bullard, PhD
Distinguished Professor of Urban Planning and Environmental Policy and Director of the
Bullard Center for Climate and Environmental Justice
Texas Southern University
Franck Marchis, PhD
Senior Planetary Astronomer
SETI Institute
Melissa Nelson, PhD
Professor of American Indian Studies
Arizona State University
Daniel Pauly, PhD
Professor of Fisheries
University of British Columbia
Aomawa Shields, PhD
Clare Boothe Luce Associate Professor of Physics and Astronomy
University of California, Irvine
The list of UC Davis Department of Entomology and Nematology faculty or former faculty who are Fellows:
UC Davis distinguished professors James R. Carey, Walter Leal (now with College of Biological Sciences) and Frank Zalom; distinguished professor emeritus Robert E Page Jr. (chair emeritus of the Department of Entomology and provost emeritus of Arizona State University; Professors Phil Ward and Neal Williams; and department affiliate Catherine Tauber (formerly of Cornell)
The late Robbin Thorp (1933-2019), UC Davis distinguished emeritus professor, and Maurice Tauber (1931-2014, a UC Davis visiting professor/scientist and formerly of Cornell) also were CAS Fellows.
See more information about the CAS Fellows here.
- Author: Kathy Keatley Garvey
The top honors went to:
- Doctoral candidate Shawn Christensen and doctoral student Alexia "Lexie" Martin, both of the lab of associate professor and community ecologist Rachel Vannette, vice chair of the department; and
- Doctoral student Iris Quayle of the lab of professor and arachnologist Jason Bond, the Evert and Marion Schlinger Endowed Chair and associate dean, College of Agricultural and Environmental Sciences.
Christensen competed in the Plant-Insect Ecosystems (P-IE) Section, Apiculture; Martin in the P-IE Section, Pollinator Biology; and Quayle in the Systematics, Evolution, and Biodiversity (SysEB) Section, Biogeography.
Shawn Christensen. Christensen presented "Bee Specific! Solitary Bee (Anthophora bomboides) Hosts a Specialized Core Microbiome through Development."
His abstract: "Host-microbe interactions are important for the development and fitness of many macroorganisms. While social bees are dependent on a vertically transmitted gut microbiome, solitary bees, which comprise the vast majority of species diversity within bees, lack a specialized gut community. We explored the microbiome associated with the complete life cycle of the ground-nesting polylectic solitary bee Anthophora bomboides standfordiana, including bacterial and fungal composition and abundance. In contrast to expectations, we found that immature stages of this solitary bee maintain a distinct core microbiome consisting of Actinobacteria and one yeast species. Stage-specific shifts in microbial abundance and community composition occur most notably during bee diapause, during which the abundance of bacteria and fungi increased dramatically. We tested two adaptive hypotheses regarding the role of the microbiome in bee ecology. First, isolated brood cell Streptomyces strains were found to inhibit growth of multiple often pathogenic filamentous fungi, suggesting a role in pathogen protection during the long period of diapause. Second, sugar alcohol composition changed in tandem with major changes in microbial abundance suggesting links with bee metabolism or overwintering biology. Our results suggest that this Anthophora species hosts a conserved core microbiome that may provide key fitness advantages through larval development and overwintering. Much work remains to examine the nature of bee-microbiome ecology, but our study reframes the conditions thought to promote the evolution and maintenance of symbiosis."
Co-authors: Rachel Vannette and Sriram Srinivas, UC Davis; Quinn McFrederick, UC Riverside; Bryan Danworth, Cornell University; and Stephen Buchmann, University of Arizona
Her abstract: "Bees interact with and in some cases benefit from a diverse community of microbes, which can be obtained through intraspecific interactions or the environment. Due to differences in sociality, bee species vary in their main route of microbial acquisition and their dependence on microbes. Despite the observation that intraspecific transmission of microbes is imperfect and environmental microbes are nearly ubiquitous in flowers, the potential impacts of intraspecific versus floral microbes on overall pollinator health have not been evaluated. This study uses two model bee species - one social (Bombus impatiens) and one solitary (Osmia lignaria)--to assess the establishment and health impacts of floral and intraspecific microbes. 2x2 factorial experiments were performed on B. impatiens microcolonies and O. lignaria females to selectively introduce intraspecific microbes and/or floral microbes. Survivorship and reproduction were measured to assess bee health and fitness, and DNA extractions and amplicon sequencing were performed on bee guts to evaluate microbial establishment. The results of this study will inform how microbes from different acquisition routes establish in the host, shape the gut microbiome, and affect host health. Since many macroorganisms encounter both intraspecific and environmental microbes, this study provides a framework for similar work in other organisms."
Co-author: Rachel Vannette, UC Davis
Her abstract: "In the Namib Desert, one of the largest and oldest deserts, the genus Onymacris contains a rarity for darkling beetles (Tenebrionidae) – the presence of eight species with striking ‘white' elytra (ranging from stark white to tan/striped). This study seeks to examine the phylogenetic relationships among white Onymacris species to test whether multiple derivations of white elytra is due to convergence or introgression. Population genomic data (3RAD) was generated from all white species of Onymacris with intraspecific sampling for four widespread species (O. marginipennis, O. bicolor, O. candidipennis, O. langi cornelii). Phylogenetic trees were inferred from 995 loci using concatenated and coalescent-based methods. The analyses supported two clades: langi and bicolor each of which contain species with pure white elytra. Variational autoencoder (VAE) clustering analysis shows a pattern of genetically isolated populations (bicolor) and gene flow indicating introgression (langi). These analyses also infer a potential new Angolan species sister to O. marginipennis in need of evaluation. Ancestral character state and biogeographic reconstruction resolve the timing of white species' color expression against the backdrop of sand sea emergence and increased aridity in the Namib, a landscape renown for ‘pocket speciation' and an impressive amount of darkling beetle diversity accounting for nearly 80% of the known endemic beetle fauna. Dynamic coloration provides a fascinating system through which to examine the role of ecological pressures and evolutionary mechanisms but requires a phylogenetic framework to understand organisms' potential adaptations to extreme environments, which is increasingly vital in the face of global trends aridity trends."
Co-authors: Lisa Chamberland, James Starrett and Jason Bond, UC Davis
The full list of student winners--first, second and third places--is here.
Founded in 1889, ESA is the largest entomological organization in the world. Its more than 7,000 members are affiliated with educational institutions, health agencies, private industry, and government.