The highly respected California Academy of Sciences greeted its 2019 Class of Fellows on Oct. 15, and one of them is a pollination ecologist from the University of California, Davis. 

Professor Neal Williams of the UC Davis Department of Entomology and Nematology was inducted into the scientific organization at the annual Bay Area gathering of the Fellows. The group includes more than 450 distinguished scientists who have made notable contributions to science.

Dermatologist and associate professor Emanual Michael Maverakis of UC Davis Health was among the 13 other Fellows. (See list of 2019 inductees)

Fellows nominate others for the high honor, and then the California Academy of Sciences' Board of Trustees votes on the nominees. James R. Carey, distinguished professor of entomology, nominated Williams, with Claire Kremen of the University of British Columbia, formerly of UC Berkeley, seconding the nomination. Maverakis was nominated by Walter Leal, distinguished professor, UC Davis Department of Molecular and Cellular Biology, and a former chair of the entomology department.

In his letter of nomination, Carey wrote that Williams is “widely known and respected for his excellence in research, extension, outreach, teaching and leadership” and “is not only one of the stars of our campus, and the UC system, but is an internationally recognized leader in pollination and bee biology and strong voice in the development of collaborative research on insect ecology. He has organized national and international conferences, leads scores of working groups, and guides reviews of impacts of land use and other global change drivers on insects and the ecosystem services they provide.”

Williams' research spans the ecology and evolution of bees and other pollinating insects and their interactions with flowering plants. “He has become a leading voice for pollinator diversity and conservation in the California and The West,” wrote Carey. “One focus of his work has been in understanding the responses of bees to different environmental drivers and developing practical, scientifically grounded actions to support resilient pollinator communities. These efforts are particularly timely given concern over the global decline in bees and other pollinators.”

The UC Davis professor served as co-chair (with Extension apiclturist Elina Lastro Niño) of the seventh annual International Pollinator Conference, a four-day conference held July 17-20 on the UC Davis campus. The global conference focused on pollinator biology health and policy.

In his work--a labor of love--Williams seeks and finds found common solutions for sustaining both wild and managed bees and communicates that information to the public and stakeholder groups. Said Carey: “This is a critical perspective in natural and agricultural lands, but also in urban landscapes in northern and southern California.”

Each year the UC Davis professor speaks to multiple beekeeper, farmer and gardener groups, and provides guidance to governing bodies, including the state legislature, and environmental groups. He and his lab are involved in a newly initiated California Bombus assessment project, which is using both museum and citizen scientist records to understand past, current and future distributions and habitat use by bumble bees. This program will host a series of workshops this spring and summer open to practitioners and the public.

Williams received his doctorate in ecology and evolution in 1999 from the State University of New York, Stony Brook and served as an assistant professor in the Department of Biology at Bryn Mawr (Penn.) College from 2004 to 2009. He joined the UC Davis faculty in 2009, advancing to full professor in 2017.

His honors and awards are numerous. Williams was part of the UC Davis Bee Team that won the Team Research Award from the Pacific Branch, Entomological Society of America (PBESA) in 2013. In 2015, he was named a five-year Chancellor's Fellow, receiving $25,000 to support his research, teaching and public service activities. And then earlier this year, Williams received PBESA's Plant-Insect Ecosystems Award, presented annually for outstanding accomplishments in the study of insect interrelationships with plants.

In addition to Carey, five others affiliated with UC Davis Department of Entomology and Nematology are Fellows of the California Academy of Sciences:

• Professor Phil Ward, ant specialist
• Frank Zalom, integrated pest management specialist and distinguished professor of entomology. He is a past president of the Entomological Society of America
• Robert E. Page Jr., bee scientist and UC Davis distinguished emeritus professor. He is a former chair of the UC Davis Department of Entomology and provost emeritus of Arizona State University
• Walter Leal, distinguished professor, UC Davis Department of Molecular and Cellular Biology, and a former chair of the entomology department; and
• Visiting scientist Catherine Tauber, formerly of Cornell University.

Former Fellows from the UC Davis entomology department include Robbin Thorp (1933-2019), distinguished emeritus professor of entomology, and visiting scientist Maurice Tauber (1931-2014), formerly of Cornell University.

It's commonly called a "passion butterfly," but we call it a Gulf Fritillary (Agraulis vanillaea) or Gulf Frit.

Or "spectacular."

A sure sign of autumn:

• A skeletonized passionflower vine (Passiflora)
• A Gulf Fritillary (Agraulis vanillae) eclosing
• A ravenous caterpillar crawling along a stem, and
• A caterpillar J'ing, about to form a chrysalis.

The orange-reddish butterfly, with its silver-spangled underwings, is a glorious butterfly.

How's the population doing this year?

Butterfly guru Art Shapiro, UC Davis professor of evolution and ecology, who has monitored the butterfly populations of central California for more than four decades and posts his research on Art's Butterfly World, says this year the Gulf Frit population is "spotty; locally abundant but less generally distributed than in recent years."

His 10 field sites stretch from the Sacramento River Delta through the Sacramento Valley and Sierra Nevada mountains to the high desert of the Western Great Basin.

We notice the ups and downs of the Gulf Frit population every year in Vacaville. This spring they were slow to start, Western scrub jays and European paper wasps grabbed what few caterpillars there were. In the summer, the population speeded up.  And now caterpillars and chrysalids cover two of our three vines--or what's left of our three vines.

Shaprio says the Gulf Frit was introduced into southern California in the 19th century, in the vicinity of San Diego in the 1870s. It was first recorded in the Bay Area before 1908. "It became a persistent breeding resident in the East and South Bay in the 1950s and has been there since." Once prevalent in the Sacramento area in the 1960s, it "seems to have died out by the early 1970s," he said.  Then in 2009, it began making a comeback in the Sacramento area.

Meanwhile, the passionflower vine climbs our fences with reckless abandon, only to be skeletonized by the growing population of Gulf Frits. They eat the leaves, the flowers, the fruit, and then start in on the bark.

More Gulf Frits mate. More eggs, caterpillars, chrysalids and adults appear. The cycle continues until the first frost. The plants die back, and will recover in the spring. A few chrysalids will remain, clinging to the vines like leftover Christmas tree ornaments,

Surprises occur. Several years ago, we saw a Gulf Frit laying an egg on Christmas Day.

It won't be a Fright Night or a Delight Night. After all, it's in the afternoon.

But the Bohart Museum of Entomology open house on "Parasitoid Palooza" on Saturday, Oct. 19 from 1 to 4 p.m. promises to provide a touch of Halloween, what with all the Halloween decorations and the pests that eat pumpkins and the parasitoids that eat their hosts.

The open house, free and family friendly, takes place in Room 1125 of the Academic Surge Building on Crocker Lane, UC Davis campus.

"We will celebrate all things parasitoid with (senior museum scientist) Steve Heydon and with some parasite input from (graduate student) Socrates Letana," said Tabatha Yang, education and outreach coordinator.  Heydon, who researches Pteromalids or jewel wasps, will display his work and answer questions.

There are some 3,450 described species of Pteromalids, found throughout the world and in virtually all habitats. Many are important as biological control agents.

"An insect parasitoid is a species whose immatures live off of an insect host, often eating it from the inside out," Yang said. "It is part of their life cycle and the host generally dies."

Also planned:

• Display of pumpkin-eating pests orange from Jasmin Ramirez Bonilla of the Ian Grettenberger lab, UC Davis Department of Entomology and Nematology. These include the orange and black Harlequin bugs and cucumber beetles (See UC Statewide Integrated Pest Management Program website)
• Family craft activity: no sew, sock caterpillars with parasitoid eggs on the outside.
• Sampling of Chirp Chips, from the Bohart Museum's recent entomophagy open house

The Bohart Museum, directed by Lynn Kimsey, professor of entomology at UC Davis, houses a global collection of nearly eight million specimens. It is also the home of the seventh largest insect collection in North America, and the California Insect Survey, a storehouse of the insect biodiversity.

Special attractions include a “live” petting zoo, featuring Madagascar hissing cockroaches, walking sticks, praying mantids and tarantulas. Visitors are invited to hold some of the insects and photograph them. The museum's gift shop, open year around, includes T-shirts, sweatshirts, books, jewelry, posters, insect-collecting equipment and insect-themed candy.

The Bohart Museum holds special open houses throughout the academic year. Its regular hours are from 9 a.m. to noon and 1 to 5 p.m. Mondays through Thursdays. The museum is closed to the public on Fridays, Saturdays and Sundays and on major holidays. Admission is free.

More information on the Bohart Museum is available by contacting (530) 752-0493 or emailing bmuseum@ucdavis.edu or Tabatha Yang at tabyang@ucdavis.edu.

You've seen honey bees buzzing past you to reach a good nectar or pollen source.

But there's much more to it than that. What's in that floral nectar and pollen?

Think plant-pollinator-pathogen webs.

Rebecca Irwin, professor of applied ecology at North California State University, Raleigh, is traveling to UC Davis to present a seminar on "The Role of Floral Traits in Pollination and Bee Disease Transmission."

Her seminar, hosted by the UC Davis Department of Entomology and Nematology, is set for 4:10 p.m., Wednesday, Oct. 16 in 122 Briggs Hall. Community ecologist Rachel Vannette, assistant professor and coordinator of the weekly seminars, will introduce her.

"Secondary compounds play a critical role in plant defense against herbivores," says Irwin in her abstract. "Although these compounds can increase plant resistance to herbivore feeding, they can also benefit herbivores by reducing parasitism. There is now widespread evidence that these same secondary compounds are also found in floral nectar and pollen."

"I will share multiple lines of evidence from a variety of collaborative projects in the lab and field suggesting that floral secondary compounds can reduce parasitism in bees, and that bees may be able to selectively forage on flowers with these compounds when they are parasitized," Irwin says. "Because floral secondary compounds alter pollinator behavior, they also have the potential to affect patterns of pollen movement and plant fitness. However, evidence suggests different effects across plant species. Finally, I will share with you results exploring the degree to which secondary compounds and other floral traits affect pollinator disease transmission in the field. Taken together, this seminar will provide empirical evidence into the diversity of roles that secondary compounds, and floral traits more generally, can play in plant-pollinator-pathogen webs."

Irwin, who received her doctorate from the University of Vermont, says on her website that the Irwin lab combines  "concepts and techniques from studies of plant-pollinator and plant-herbivore interactions to understand the ecological and evolutionary consequences of pollination mutualisms and how they will respond to environmental change. We also study the disease ecology and transmission biology of bees and their pathogens."

Irwin also shares her expertise on bee condos or bee hotels. "From humble coffee cans to fancier hotels with a roof, there are many ways to get creative with the design. Here, we provide a brief introduction into building a simple first time bee hotel."

And, she says, "hotels work better when facing southeast."

if you want to build your own bee housing units, check out the information on her website.