- Author: Kathy Keatley Garvey
Bond wears several hats: he is the Evert and Marion Schlinger Endowed Chair, UC Davis Department of Entomology and Nematology; director of the Bohart Museum of Entomology; associate dean, UC Davis College of Agricultural and Environmental Sciences; and president-elect of the American Arachnological Society.
The Bond lab research paper, involving a new genus of California trapdoor spiders, calls attention to not only the diversity of trapdoor spiders in the state, but a new species they named for national civil rights activist Fred Toyosaburo Korematsu, a San Francisco Bay area native who resisted incarceration in the Japanese-American concentration camps during World War II.
The paper, “Microgeographic Population Structuring in a Genus of California Trapdoor Spiders and Discovery of an Enigmatic New Species (Euctenizidae: Promyrmekiaphila korematsui sp. nov.), appears in the journal Ecology and Evolution. The link: https://doi.org/10.1002/ece3.10983.
Co-Authors of Paper. Co-authors of the paper with Bond are James Starrett, project scientist; Xavier Zahnle, who recently received his doctorate; doctoral candidate Emma Jochim and doctoral student Iris Quayle.
Trapdoor spiders are so named because they construct their burrows with a corklike or wafer trap door made of soil, vegetation and silk.
“In this study, we generate sub-genomic scale data to investigate phylogenetic relationships and population structure in Promyrmekiaphila and explore deep phylogenetic breaks hypothesized to occur across the genus,” they wrote. “We employ multiple approaches to test species delimitation hypotheses and test for gene flow to assess reproductive isolation in divergent lineages. We measure an array of female somatic morphological characters to evaluate if species diverge morphologically in potential sympatry, as well as in allopatry with divergent ecological niches. Our goal is to address at what point in the speciation process morphologically conserved taxa can be declared cryptic species rather than simply divergent population groups. We describe a new speciesPromyrmekiaphila korematsuisp. nov. Ultimately, we reject dividing the most geographically widespread species,P. clathrata, into multiple species, and instead interpret genetic breaks as deeply structured populations that are not fully reproductively isolated or may have undergone historical gene flow.”
The paper's abstract:
tr“The recognition and delineation of cryptic species remains a perplexing problem in systematics, evolution, and species delimitation. Once recognized as such, cryptic species complexes provide fertile ground for studying genetic divergence within the context of phenotypic and ecological divergence (or lack thereof). Herein we document the discovery of a new cryptic species of trapdoor spider, Promyrmekiaphila korematsui sp. nov. Using subgenomic data obtained via target enrichment, we document the phylogeography of the California endemic genus Promyrmekiaphila and its constituent species, which also includes P. clathrata and P. winnemem. Based on these data we show a pattern of strong geographic structuring among populations but cannot entirely discount recent gene flow among populations that are parapatric, particularly for deeply diverged lineages within P. clathrata. The genetic data, in addition to revealing a new undescribed species, also allude to a pattern of potential phenotypic differentiation where species likely come into close contact. Alternatively, phenotypic cohesion among genetically divergent P. clathrata lineages suggests that some level of gene flow is ongoing or occurred in the recent past. Despite considerable field collection efforts over many years, additional sampling in potential zones of contact for both species and lineages is needed to completely resolve the dynamics of divergence in Promyrmekiaphila at the population–species interface.”
The research drew funding from a National Science Foundation grant and the Evert and Marion Schlinger Foundation.
- Author: Kathy Keatley Garvey
Just ask UC Davis entomology student Sol Wantz, who will present a talk on katydids (her favorite insect), grasshoppers and crickets at the Bohart Museum of Entomology open house, set from 1 to 4 p.m., Sunday, March 3 in Room 1124 of the Academic Surge Building, 455 Crocker Lane, UC Davis campus. It's free and family friendly.
We remember a crab spider that also found a katydid "incredibly fascinating." Umm, make that "nutritious." The spider grabbed the katydid on a Mexican sunflower (Tithonia rotundifola) in our garden, paralyzed it with a venomous bite, and then dragged it beneath the petals to eat it.
It's all about the cycle of life. Everything eats in the garden.
Sol Wantz triples as a curator intern at the Bohart Museum of Entomology, a student researcher in the lab of pollination ecologist and professor Neal Williams, and as president of the UC Davis Entomology Club.
“I'll be giving a overview of all of the major and most interesting--in my opinion--families of Orthoptera," she said. The order includes some 20,000 species worldwide.
Did you know that "the katydid genus Supersonus produces the highest frequency sound of any known animal, up to 150 kHz!" she asks. "For reference, humans can hear only between 0 and 20 kHz."
The Bohart Museum, directed by Professor Jason Bond, is located in Room 1124 of the Academic Surge Building, 455 Crocker Lane. It houses a global collection of eight million insect specimens, plus a live petting zoo (Madagasgar hissing cockroaches, stick insects, tarantulas and more) and an insect-themed gift shop stocked with T-shirts, hooded sweatshirts, books, posters, jewelry and insect-collecting equipment.
For more information, access the Bohart website at https://bohart.ucdavis.edu or contact bmuseum@ucdavis.edu.
- Author: Kathy Keatley Garvey
Themed "Grasshoppers, Crickets and Katydids," the open house will take place from 1 to 4 p.m., Sunday, March 3 in Room 1124 of the Academic Surge Building, 455 Crocker Lane, UC Davis campus. It's free and family friendly. Parking is also free.
UC Davis third-year entomology major Solea “Sol” Wantz, who triples as a curator intern at the Bohart Museum of Entomology, a student researcher in the lab of pollination ecologist and professor Neal Williams, and as president of the UC Davis Entomology Club, will discuss “Grasshoppers, Crickets and Katydids."
She'll deliver her presentation at 1 p.m., and questions and answers will follow. The venue: a classroom of the Museum of Wildlife and Fish Biology, located next to the Bohart Museum.
“I'll be giving a overview of all of the major and most interesting--in my opinion--families of Orthoptera," she said. The order includes some 20,000 species worldwide.
A few factoids she related:
- The katydid genus Supersonus produces the highest frequency sound of any known animal, up to 150 kHz! For reference, humans can only hear between 0 and 20 kHz.
- The family Myrmecophilidae, the “ant-loving crickets” are tiny, wingless crickets that live only in ant nests. “We even have these here in Davis, but they're hard to find unless you're digging through ant colonies,” Wantz says.
- Jerusalem crickets, also known as "potato bugs," have a unique method of sound production. "Rather than using their wings (they are actually wingless, she says) or another sound-producing organ, these crickets thump their abdomen against the ground to produce a surprisingly loud noise. Their thumping patterns can be used to identify their species."
“It's actually a grasshopper defense mechanism!” Wantz says. “When under stress--usually when they are grabbed, especially around the thorax-- grasshoppers vomit a foul-smelling/tasting liquid to ward off whatever predator is attacking them.”
Orthoptera (in ancient Greece, “ortho” means "straight,” and “optera” means "wings") is an order that includes grasshoppers, crickets, locusts and katydids. Grasshopper belong to the suborder Caelifera, and crickets and katydids to Ensifera.
Wantz, who decided at age 6 that she wanted to become an entomologist, is currently re-curating and reorganizing the Bohart's collection of several thousand specimens of Orthoptera.
"After finishing my undergraduate degree at UC Davis, I aim to enter a graduate program, potentially to explore my newfound interest in systematics. Ultimately, I hope to become a professor of entomology and lead my own research lab. This appeals to me because it presents the opportunity to weave together my knowledge of wild bee ecology and conservation, love of Orthoptera and museum work, and emphasis on professional outreach and public engagement."
The Bohart Museum, directed by Professor Jason Bond, houses a global collection of eight million insect specimens, plus a live petting zoo (Madagascar hissing cockroaches, stick insects, tarantulas and more) and an insect-themed gift shop stocked with T-shirts, hooded sweatshirts, books, posters, jewelry and insect-collecting equipment.
For more information, access the Bohart website at https://bohart.ucdavis.edu or contact bmuseum@ucdavis.edu.
- Author: Kathy Keatley Garvey
Meet Salil Bidaye, Research Group Leader, Max Planck Florida Institute for Neuroscience, Jupiter, Fla.
He studies neuronal control locomotion in fruit flies, Drosophila--focusing his research on "understanding how fast and precise locomotor decisions are executed at the level of genetically defined neural circuits."
He will present his seminar, hosted by the UC Davis Department of Entomology and Nematology (ENT), at 4:10 p.m., Monday, March 4 in 122 Briggs Hall and on Zoom. The Zoom link:
https://ucdavis.zoom.us/j/95882849672.
Molecular geneticist and physiologist Joanna Chiu, professor and chair of the ENT department, will introduce him.
"Walking is a complex motor program involving coordinated and distributed activity across the brain and the spinal cord," Bidaye writes in his abstract. "Halting appropriately at the correct time is a critical but often overlooked component of walking control. While recent studies have delineated specific genetically defined neuronal populations in the mouse brainstem that drive different types of halting, the underlying neural circuit mechanisms responsible for overruling the competing walking-state neural activity to generate context-appropriate halting, remain unclear. Here, we elucidate two fundamental mechanisms by which I implement context-appropriate halting."
Bidaye accepted his Research Group Leader position at the Max Planck Florida Institute for Neuroscience in April 2021. He previously served as a postdoctoral Fellow at UC Berkeley in the lab of Professor Kristin Scott. He obtained his Ph.D. at the Research Institute of Molecular Pathology, Vienna, Austria, working in the Barry Dickson laboratory.
While a graduate student in Vienna, "I observed fruit-flies chasing each other during courtship," he relates. "I got hooked on to the intricate control that comprises insect walking. "This fascination kindled by powerful fly genetic tools, has led me to persistently device new behavioral assays and neural recording techniques, aimed at elucidating the fundamental control mechanisms that underlie the exquisite locomotor control that is commonplace in all animals."
His publications include:
- Two Brain Pathways Initiate Distinct Forward Walking Programs in Drosophila, Aug. 20, 2020, journal Neuron
- Six-Legged Walking in Insects: How CPGs, Peripheral Feedback, and Descending Signals Generate Coordinated and Adaptive Motor Rhythms, February 2018, Journal of Neurophysiology
- Neuronal Control of Drosophila Walking Direction, April 4, 2014, Science
Bidaye's seminar is expected to be the last of the winter quarter; the next scheduled speaker, Inga Zasada, a research plant pathologist with the USDA-ARS Horticultural Crops Research Laboratory, Corvallis, Ore., recently canceled her March 11 seminar due to a medical issue in the family.
For any Zoom technical issues, contact seminar coordinator Brian Johnson, associate professor, at brnjohnson@ucdavis.edu. The list of winter quarter seminars is here.
- Author: Kathy Keatley Garvey
His name is synonymous with integrated pest management (IPM) and his achievements during his 45-year career are nothing short of spectacular.
So it's no surprise that UC Davis distinguished professor emeritus Frank Zalom, internationally recognized for his IPM expertise and leadership, is the recipient of a Lifetime IPM Achievement Award from the California Department of Pesticide Regulation (CDPR).
Zalom, a member of the UC Davis Department of Entomology and Nematology faculty, and formerly, the 16-year director of the UC Statewide IPM Program, will be honored at CDPR's IPM Achievement Awards virtual ceremony at 1:30 p.m., Thursday, Feb. 29. Four other individuals or organizations also will receive the 2023 awards. (Register here to access the Zoom ceremony.)
CDPR praised Zalom for “advancing IPM practices in California specialty crops as a preeminent researcher, practitioner and champion of sustainable pest management.”
The Lifetime IPM Achievement Award recognizes individuals with 20 or more years of research, professional practice, or outreach in IPM-related sectors.
“Dr. Zalom's work has contributed greatly to advancing safe, effective, and sustainable IPM practices in specialty crops such as almonds, strawberries, tomatoes, and olives,” a CDPR spokesman said. “Through hundreds of presentations and publications, Dr. Zalom has contributed to broad adoption of IPM practices for numerous agricultural pests, resulting in less insecticide use and reduced run-off impacts and high-risk pesticide exposures.”
Zalom officially retired in 2018 but continues his IPM research and outreach efforts as a recall professor in the Department of Entomology and Nematology. He also serves as advisor to the California Department of Food and Agriculture's (CDFA) Office of Pesticide Consultation and Analysis, and a science advisor for the U.S. Department of Agriculture's National Institute of Food and Agriculture.
Zalom is known for his “tireless advocacy for IPM as THE way to address pest concerns in a sustainable, economical and environmentally acceptable manner.” His peers describe his approach to IPM as “progressive, not dogmatic, integrating the economical and judicious use of crop protection products while promoting effective, biologically based pest management alternatives.”
“The overarching objective of my research program can best be described as the pursuit of knowledge that advances the science and use of integrated pest management,” Zalom said. Although he initially worked on rice, cotton and alfalfa, he turned his primary focus to California specialty crops including tree crops (almonds, olives, prunes, peaches), small fruits (grapes, strawberries, caneberries), and fruiting vegetables (example, tomatoes).
Zalom developed IPM strategies and tactics within the context of these systems that included monitoring procedures, thresholds, pest development and population models, biological controls, and use of less toxic pesticides, many of which are incorporated into UC IPM Guidelines for these crops (see https://ipm.ucanr.edu/agriculture/) and have become standard practice. He pursues his goals through a combination of fundamental studies linked to pest biology, physiology, and community ecology.
Overall, Zalom engages in what he calls "problem-focused, hypothesis-driven research that focuses on understanding the biology of the pest species that eventually results in economically viable IPM management approaches that reduce the amount of undesirable insecticides being used in crop production."
Zalom says he considers himself "a problem-solver who consults with fellow scientists, researchers, horticulturists, students, visiting scholars, extension educators, growers, pest control advisers, environmental groups, and public agencies--listening to their requests and concerns, before proposing and implementing the best IPM solutions to pest problems."
See more about our UC Davis doctoral alumnus extraordinaire and his IPM achievements.
Update:
- Full Ceremony: https://youtu.be/XEMKD04bDT4
- Video honoring Frank Zalom: https://youtu.be/oXc8OcQivLI
- Remarks from Assembly member Cecilia Aguiar-Curry: https://youtu.be/o4xnXyPn7e8
