- Author: Kathy Keatley Garvey
Bruce Hammock, UC Davis distinguished professor of entomology who holds a joint appointment with the UC Davis Comprehensive Cancer Center, is fond of saying that in his many talks.
"Science is full of surprises."
His research clearly shows that basic science can lead to surprising findings.
A recently published news story, "From Caterpillars to Kidney Disease: Surprise Discoveries in Basic Science," on the Medical College of Wisconsin website chronicles how Hammock's basic research on caterpillars--how caterpillars become butterflies--led to key discoveries about chronic pain, including diabetic pain.
As an aside, Hammock suggested to communication specialist Karri Stock that the story could include a photo of a caterpillar and a butterfly, and did I have one?
I did, thanks to the Gulf Fritillary (Agraulis vanillae) population explosion on our passionflower vine (Passiflora). A caterpillar was doing what caterpillars do. Then two butterflies came along and started doing what males and females do. The three-in-one photo illustrates the article, along with a photo of Hammock and collaborator John Imig, professor of pharmacology and toxicology at the Medical College of Wisconsin, Milwaukee.
The gist of the news story is that Imig received a $2.3 million grant from the National Institute of Diabetes and Digestive and Kidney Diseases "to investigate the development of a drug to treat type 2 diabetes and metabolic syndrome."
"But what we didn't tell you is that this translational grant is all thanks to some caterpillars in California and decades of research," Stock wrote. "It's a tale of pure curiosity with a great lesson for budding scientists and the public alike: You can't always predict where basic science discoveries will lead."
She related how, more than 40 years ago, a young entomologist in California named Bruce Hammock found a key enzyme (epoxide hydrolase or EH) in the metamorphosis of caterpillars into butterflies. "The enzyme degrades a caterpillar's juvenile hormone, allowing it to move from the larval stage into an adult insect. Early in his career, Dr. Hammock found that if he exploited this EH and prevented larvae from becoming adults, he had on his hands an effective genetically engineered insecticide."
Then came the basic science and fundamental questions that Hammock asked. "Does the enzyme occur in plants? Does it occur in mammals?"
"And it turns out that it does, particularly as soluble epoxide hydrolase (sEH) in mammals, including mice and humans, and its distribution suggested it was involved in regulatory biology," Stock wrote. She went on to detail the collaboration of Hammock and Imig. Read the entire MCW story here.
Hammock's work has drawn national and international attention. Groundbreaking neuropathic pain research emanating from the Hammock lab made Discover magazine's Top 100 Science Stories of 2015 ranking among the Top 15 in the medicine/genetics category.
The UC Davis research was singled out for its “Endoplasmic Reticulum Stress in the Peripheral Nervous System is a Significant Driver of Neuropathic Pain,” published in July 2015 in the Proceedings of the National Academy of Sciences. (See UC Davis news story).
Highly honored by his peers, Hammock is a fellow of the National Academy of Inventors, which honors academic invention and encourages translations of inventions to benefit society. He is a member of the U.S. National Academy of Sciences, a fellow of the Entomological Society of America, and the recipient of the Bernard B. Brodie Award in Drug Metabolism, sponsored by the America Society for Pharmacology and Experimental Therapeutics. He directs the campuswide Superfund Research Program, National Institutes of Health Biotechnology Training Program, and the National Institute of Environmental Health Sciences (NIEHS) Combined Analytical Laboratory.
A native of Little Rock, Ark., Bruce earned a bachelor's degree in entomology from Louisiana State University in 1969 and his doctorate in entomology/toxicology from UC Berkeley in 1973, and then accepted a Rockefeller Postdoctoral Fellowship at Northwestern University. Hammock served as a member of the UC Riverside faculty for six years before joining UC Davis in 1980. In addition to maintaining a vigorous research program, Hammock teaches, mentors students, works with visiting scholars and enjoys rock climbing and kayaking.
And if you get a chance to hear him speak about his research, he's likely to say: "Science is full of surprises."
Because it is.
- Author: Kathy Keatley Garvey
Yes, bugged.
And you won't want to miss it.
If you head over to the 69th annual Solano County Fair, 900 Fairgrounds Drive, Vallejo, between now and Sunday, July 31, you'll see lots of bees, butterflies, lady beetles, dragonflies, ants and other insects in McCormack Hall. They're depicted in photos and drawings, and on display boards, quilts, cakes, muffins, China plate paintings and more.
Gloria Gonzalez, superintendent of McCormack Hall, and her crew assembled the last of the displays earlier this week, just in time for the opening on Wednesday, July 27. The fair is open weekdays until 11 p.m., and on Saturday and Sunday, July 30-31, from noon to 11 p.m.
Fairs are educational, informative, and entertaining, and the Solano County Fair, launched in 1949, is no exception. This year's theme is "Play It Again, Solano!"
But, back to the insects. Most of the exhibits in McCormack, of course, do not showcase insects, but many do! And they are amazing!
Have you ever seen a honey bee on a rock? Andrew Donato of Vallejo, has. In fact, he painted a bee on a rock and entered it in the 9-10 age graphic arts category. It's a winner!
Lexi Haddon Mendes of the Vaca Valley 4-H Club, Vacaville, entered a decorated cake, "Flowers and Bees," in her age division, 9-10. She knows bees; she's a beekeeper and her father heads the club's beekeeping project.
Madeline Giron of Benicia entered muffins decorated with colorful ladybugs, aka lady beetles, in her 11-13 age division. Judges said "Yum!" and "Beautiful!" and "Blue Ribbon!"
Joseph Garrett of Fairfield entered several mounted insect specimens--along with a wolf spider (spiders are not insects)--in the science project division, ages 5-8. Is Joseph an entomologist-to-be?
The work of the adults is also incredible!
- Laquita Cumings of Rodeo entered a quilt of the most colorful butterflies you've ever seen. Best of show!
- Kim English of Fairfield entered a "Dresden design" China painting, adorned with flowers, butterflies and a bee.
- Celia Weller of American Canyon crafted a machine-quilted wall hanging adorned with flowers and an exotic butterfly not found in nature--but found at McCormack Hall.
- Beverly O'Hara of Benicia appliqued a quilt with ants and called it "Ant-titude." Clever! It features ants enjoying a picnic. What's a picnic without ants?
- Anita Jessop of Benicia imagined a field of flowers, and quilted a "Sunny Field of Flowers" wall hanging, complete with a hummingbird and dragonflies.
- Laura Ryan of Benicia entered a fan needlepoint anchored with a delightful blue butterfly. Reminds us of the blue morpho!
Those are just some of the prize-winning exhibits by youth and adults displayed at McCormack Hall. Be sure to check out the other buildings as well for an overall look at what the fair offers. The fair ends on Sunday, July 31 at 11 p.m.
Gloria Gonzalez, a longtime 4-H volunteer, has worked on the McCormack Hall displays for 11 years and has served as the superintendent for three years. She's the community leader of the Sherwood Forest 4-H Club, Vallejo, a position she's held for eight years.
The veteran 4-H adult volunteer has served as a project leader in the Sherwood Forest 4-H Club for 18 years. Many of the folks who crew McCormack Hall are also 4-H'ers, including Sharon Payne, a past president of the Solano County 4-H Leaders' Council; and longtime 4-H'ers turned leaders, Angelina Gonzalez and Julianna Payne, all of the Sherwood Forest 4-H Club.
- Author: Kathy Keatley Garvey
When you're chasing a tiger, you don't have to worry about the fangs or the claws.
No worries about this tiger. This tiger has wings.
If you head over to the Storer Garden at the UC Davis Arboretum, you'll see plenty of tigers, Western tiger swallowtail, on the dwarf plumbago, Ceratostigma plumbaginoides. The plumbago is an Arboretum All-Star. (The UC Davis Arboretum horticultural staff has singled out 100 tough, reliable plants as All-Stars; that is, they're "easy to grow, don't need a lot of water, have few problems with pests or diseases, and have outstanding qualities in the garden. Many of them are California native plants and support native birds and insects. Most All-Star plants can be successfully planted and grown throughout California.")
The Western tiger swallowtail (Papilio rutulus) probably would consider the plumbago an All-Star, too, as it flutters around, sipping nectar and looking for a mate.
If you're lucky, you might be able to capture an image of the tiger next to the dwarf plumbago sign. Or, if you're really lucky, you might get two butterflies in one photo.
The Western tiger swallowtail is the kind of butterfly that takes your breath away; you tend to hold your breath while you're trying to hold onto a view of the tiger. It's a bit of flying sunshine in days darkened with trouble and turmoil.
Butterfly guru Art Shapiro, UC Davis distinguished professor of evolution and ecology, writes this about the tiger on his website (he's been monitoring the butterfly populations of Central California for more than 40 years): "The Western Tiger Swallowtail is basically a species of riparian forest, where it glides majestically back and forth along the watercourse. It has expanded into older urban neighborhoods where several of its host genera are grown as shade trees, and behaves as if the street were a watercourse. In the high country and on the Sierran east slope its usual host is Aspen."
Shapiro says the tiger "visits Yerba Santa, California Buckeye, Milkweed, Dogbane, Lilies, Coyotemint" and frequents gardens for Lilac and Buddleia. "Spring individuals are smaller and usually paler than summer. Low-elevation hosts include Sycamore (Platanus), Ash (Fraxinus), Cherry and other stone fruits (Prunus), Willow (Salix), Privet (Ligustrum), Lilac (Syringa) and (in Sacramento County) Sweet Gum (Liquidambar)."
On our block, we've seen the tiger flying around the sycamore and sweet gum. It then flutters over to our pollinator garden to sip nectar from the Buddleia (butterfly bush), Tithonia (Mexican sunflower) and Lantana.
This tiger has wings!
- Author: Kathy Keatley Garvey
He feuded with fellow entomologists, was a bigamist (married to two wives at the same time) and caused an uproar when a tunnel he dug in a Washington, D.C. alley collapsed in 1924 and some declared it the work of German spies.
All that will come to light on Thursday, April 28 at UC Davis when entomologist Marc E. Epstein talks about his newly published book on Dyar's eccentric life, Moths, Myths and Mosquitoes: The Eccentric Life of Harrison G. Dyar, Jr.
Epstein will present a lecture and book signing from 7:15 to 8:45 p.m., in the International House, 10 College Park, Davis.
The event, free and open to the public, is co-sponsored by Jay Rosenheim, professor of entomology, UC Davis Department of Entomology and Nematology, and by his department. Epstein is a longtime research associate and friend of Rosenheim's.
“As far as how I got into doing research on Dyar, at the onset it was related to my dissertation at University of Minnesota on Limacodidae (family of slug caterpillar moths, so called because their caterpillars bear a distinct resemblance to slugs),” Epstein said.
This led to Epstein and Henson to writing the American Entomologist article “Digging for Dyar: the Man behind the Myth.”
“Since the article appeared in 1992 I've accumulated a lot more information about Dyar, his genealogy, and even more significant connections between him and his favorite moths,” Epstein said.
The book, published by Oxford University Press, will be available for purchase at Epstein's talk.
Epstein is a senior insect biosystematist for the order Lepitopdera (butterflies, moths) with the Plant Pest Diagnostics Branch, California Department of Food and Agriculture. He is a research associate for the National Museum of Natural History (NMNH), Smithsonian Institution.
Harrison G. Dyar Jr. (1866-1929) was a Smithsonian entomologist of the early 20th century. He was a taxonomist who published extensively on moths and butterflies, mosquitoes, and sawflies. As a teenager, he studied insects, particularly moths. He received his bachelor's degree in chemistry in 1889 from the Massachusetts Institute of Technology, and his master's degree in biology from Columbia University in 1894. His doctoral dissertation (1895) dealt with airborne bacteria in New York City.
Oxford University offers this description of Moths, Myths and Mosquitoes:
"On September 26, 1924, the ground collapsed beneath a truck in a back alley in Washington, D.C., revealing a mysterious underground labyrinth. In spite of wild speculations, the tunnel was not the work of German spies, but rather an aging, eccentric Smithsonian scientist named Harrison Gray Dyar, Jr. While Dyar's covert tunneling habits may seem far-fetched, they were merely one of many oddities in Dyar's unbelievable life."
"For the first time, insect biosystematist Marc E. Epstein presents a complete account of Dyar's life story. Dyar, one of the most influential biologists of the twentieth century, focused his entomological career on building natural classifications of various groups of insects. His revolutionary approach to taxonomy, which examined both larval and adult stages of insects, brought about major changes in the scientific community's understanding of natural relationships and insect systematics. He was also the father of what came to be known as Dyar's Law, a pragmatic method to standardize information on insect larval stages as they grow. Over the course of his illustrious career at the U.S. National Museum, Smithsonian Institution from 1897-1929, Dyar named over 3,000 species, established the List of North American Lepidoptera, an unrivaled catalog of moths and butterflies, and built one of the nation's premier Lepidoptera and mosquito collections."
Epstein researches and writes on evolution and classification of moths and their biodiversity, and develops identification tools for moths that threaten agriculture. He served with NMNH's Department of Entomology (1988-2003), co-founding the department's Archives and Illustration Archives. He received his master's degree (1982) and doctorate (1988) from the University of Minnesota.
For more information on the April 28th event, contact Jay Rosenheim at jarosenheim@ucdavis.edu.
- Author: Kathy Keatley Garvey
They go together like honey bees on bee balm and bumble bees on tomatoes.
When you attend the 102nd annual campuswide UC Davis Picnic Day on Saturday, April 16, be sure to head over to Briggs Hall, Kleiber Hall Drive, to see the Pollinator Pavilion, which will emphasize the importance of pollinators in both natural environments and food production.
"It is often said that one in every three bites of food we take is dependent on animal pollination," said Pavilion Pollinator coordinator Margaret "Rei" Scampavia, a doctoral candidate in entomology. "While there are some foods that do not rely on animal pollination, many of the tastiest and most nutritious food does. To this end, we have a series of posters demonstrating what a meal might look like with and without foods that benefit from animal pollination."
"We are going to have a series of exhibits showcasing pollinator diversity, demonstrating their importance in natural ecosystems and food production, and providing information on what members of the general public can do to help native pollinators," Scampavia said.
"We will have information on a wide variety of animal pollinators, including butterflies, flies, wasps, birds, and even bats. But the majority of the exhibit will focus on the most abundant pollinators: native bees."
The highlight is the walk-in Pollinator Pavillion, an enclosure where visitors can "safely view live pollinators, such as bees, butterflies and flies, up close and in person," the entomologist said. "Younger guests can practice scientific observation by filling out specially provided data sheets. Some of the species present will include: blue orchard bees, Monarch butterflies, Red Admiral butterflies, and Painted Lady butterflies."
Scampavia points out that the European honey bee "is the first thing many people think of when they hear the word pollinator. But in reality, this species is only one of tens of thousands of pollinator species; there are more than 20,000 species of bee besides the honeybee, for example. We hope that visitors to this exhibit will leave with a greater appreciation of the amazingly diverse animals that pollinate flowers."
Last year scores of enthusiastic visitors packed the Pollinator Pavilion. It proved to be one of the most popular, well-crafted, well-designed Picnic Day displays. Another eagerly anticipated event awaits Saturday.
And now there's an urgency.
"Many pollinator species are experiencing alarming declines," Scampavia said. "Monarch butterflies, for example, have declined by over 90 percent in the past ten years. To promote awareness of the plight of the Monarch, we have a series of exhibits with live caterpillars, chrysalises, and adults, which also contain important information about this species and what we can do to prevent further losses. There will also be information about ways to enhance outdoor spaces to promote and sustain healthy wild, native pollinators."