- Author: Kathy Keatley Garvey
Beginning Jan. 1, 2024, Shapiro will be collaborating with the Bohart Museum of Entomology, the "dropping off point," for the Pieris rapae entries. Bohart curator and collections manager Brennen Dyer will be accepting the entries.
Shapiro launched the contest in 1972 as part of his scientific research to determine the first flight of the year in the three-county area. His research involves long-term studies of butterfly life cycles and climate change.
The contest begins at 12:01 Jan. 1. The prize is either a beer or an equivalent.
Shapiro says P. rapae is emerging earlier and earlier as the regional climate has warmed. "Since 1972, the first flight of the cabbage white butterfly has varied from Jan. 1 to Feb. 22, averaging about Jan. 20."
Shapiro, who maintains a research website at http://butterfly.ucdavis.edu/, says the point of the contest "is to get the earliest possible flight date for statistical purposes. The rules require that the animal be captured and brought in alive to be verified. That way no one can falsely claim to have seen one or misidentify something else as a cabbage white."
The contest rules include:
- It must be an adult (no caterpillars or pupae) and be captured outdoors.
- It must be brought in alive to the Bohart Museum of Entomology, located in Room 1124, Academic Surge Building, 455 Crocker Lane, UC Davis campus, during work hours, from 8 a.m. to noon, and from 1 to 5 p.m., Monday through Friday. It must include full data (exact time, date and location of the capture) and the contact information of the collector (address, phone number and/or e-mail.) Brennen Dyer will certify that it is alive and refrigerate it. (If it's collected on a weekend or holiday, it can be kept in the refrigerator for a few days--do not freeze it, Shapiro says.)
- Shapiro is the sole judge.
Feb 8 was "the 11th latest first rapae day since 1972,” he said, detailing the 10 later finds: Feb. 26, 1972 (“which is probably too late, since I hadn't yet learned where to look for them first!”); Feb. 22, 1992 (“I fully believe that one”); Feb. 18, 1978 and 1986; Feb. 17, 1979; Feb. 16, 1975; Feb. 14, 1981; Feb. 13, 1983 and 1985; and Feb. 10, 1980. “Note that most of these are from the '80s,” he said. “There has indeed been a trend to earlier emergence, though this year is an outlier!”
Shapiro says P. rapae inhabits vacant lots, fields and gardens where its host plants, weedy mustards, grow. The male is white. The female is often slightly buffy; the "underside of the hindwing and apex of the forewing may be distinctly yellow and normally have a gray cast,” Shapiro said. “The black dots and apical spot on the upperside tend to be faint or even to disappear really early in the season.”
Shapiro, who monitors butterfly populations in the field for more than 200 days of the year, participates in his own contest. He has been defeated only four times and those were by UC Davis graduate students. Adam Porter won in 1983; Sherri Graves and Rick VanBuskirk each won in the late 1990s; and Jacob Montgomery in 2016. The first three were his own graduate students.
Shapiro nets many of the winners in mustard patches near railroad tracks in West Sacramento, Yolo County
Recent Beer-for-a-Butterfly Contest statistics:
- 2023: Art Shapiro recorded the first butterfly of the year at 11:22 a.m., Feb 8 in West Sacramento County, Yolo County. He did not collect the specimen and no one can forth with a winner.
- 2022: No official contest due to the COVID pandemic, but Shapiro recorded his first-of-the-year P. rapae at 1:25 p.m. on Jan. 19 in West Sacramento, Yolo County
- 2021: No official contest due to the COVID pandemic, but Shapiro collected his first-of-the-year at 1:55 p.m. Jan. 16 on the UC Davis campus, Yolo County
- 2020: Technically, no winner, as Shapiro did not collect the one he spotted in Winters, Yolo County at 11:16 a.m. on Jan. 30 at the Putah Creek Nature Park. "It flew back and forth across Putah Creek and then departed the area, flying out of reach above the trees," he noted. He waited around for 90 minutes to see if it would return. It did not.
- 2019: Shapiro collected the first cabbage white butterfly near the Suisun Yacht Club, Suisun City, Solano County, at 1:12 p.m., Friday, Jan. 25. "It was the earliest recorded in Suisun City in 47 seasons."
- 2018: Art Shapiro collected the winner in West Sacramento
- 2017: Jan. 19: Art Shapiro collected the winner on the UC Davis campus
- 2016: Jan. 16: Jacob Montgomery collected the winner in west Davis
- 2015: Jan. 26: Shapiro collected the winner in West Sacramento
- 2014: Jan. 14: Shapiro collected the winner in West Sacramento
- 2013: Jan. 21: Shapiro collected the winner in West Sacramento
- 2012: Jan. 8: Shapiro collected the winner in West Sacramento
- 2011: Jan. 31: Shapiro collected the winner in Suisun
- 2010: Jan. 27: Shapiro collected the winner in West Sacramento
A fellow of the American Association for the Advancement of Science, the Royal Entomological Society and the California Academy of Sciences, Shapiro is the author of A Field Guide to Butterflies of the San Francisco Bay and Sacramento Valley Regions, illustrated by Tim Manolis and published in 2007 by the University of California Press.
Collaborating with Shapiro on butterfly research projects is Foundation Professor Matthew Forister, the Trevor J. McMinn Endowed Research Professor in Biology, University of Nevada. Forister received his doctorate from UC Davis, studying with Shapiro, his major professor.
Pest of Cole Crops. As a caterpillar, the insect is a pest of cole crops such as cabbage. UC Statewide Integrated Pest Management Program (UC IPM) says the cabbageworm is active throughout the year in California. "Cabbageworm larvae chew large, irregular holes in leaves, bore into heads, and drop greenish brown fecal pellets that may contaminate the marketed product. Seedlings may be damaged, but most losses are due to damage to marketed parts of the plant," according to the UC IPM website.
The Bohart Museum of Entomology is directed by UC Davis distinguished professor Lynn Kimsey. Entomologist Jeff Smith curates the Lepidoptera collection, a global collection of some 500,000 moths and butterflies.
- Author: Kathy Keatley Garvey
It was a gathering of science experts and policymakers to share science and conservation actions to help the declining western monarch population. The scientists discussed the natural history of the monarch (Danaus plexippus), its population status, habitats and barriers to conservation success.
"It was a great group of folks working hard to connect science and policy to improve monarch conservation," Yang said. "It was a privilege to be a part of it.'
During the summit, the Department of the Interior announced a $1 million award to the National Fish and Wildlife Foundation's (NFWF) Monarch Butterfly and Pollinators Conservation Fund, and the U.S. Fish and Wildlife Service (USFWS) announced a Pollinator Conservation Center.
Sen. Merkley organized the summit in collaboration with the Department of the Interior. Officials attending included Secretary of the Interior Deb Haaland; Sen. Ron Wyden of Oregon; Sen. Alex Padilla of California; Cong. Jimmy Panetta of California; Assistant Secretary for Fish and Wildlife and Parks (USFWS) Shannon Estenoz; and U.S. Fish and Wildlife Service Director Martha Williams.
- Professor Matt Forister, the Trevor J. McMinn Endowed Professor in Biology, Foundation Professor, at the University of Nevada, Reno. He holds a doctorate in ecology (2004) from UC Davis where he studied with major professor Art Shapiro, distinguished professor of evolution and ecology
- Elizabeth Crone, former professor and population ecologist at Tufts University and who will join UC Davis starting this fall as a professor in the Department of Evolution and Ecology
- Sarina Jepsen, director of the Xerces Society's Endangered Species and Aquatic Program, who holds a master's degree (2006) in entomology from UC Davis. She studied with major professor Jay Rosenheim, distinguished professor of entomology.
Others giving scientific presentations were Amanda Barth, Western Monarch and Native Pollinator Working Group; Wendy Caldwell, executive director, Monarch Joint Venture; Ryan Drum, wildlife biologist, USFWS; Wayne Thogmartin, quantitative ecologist, U. S. Geological Survey; Cat Darst, wildlife biologist, USFWS, Cheryl Schultz, professor, Washington State University, Pullman; Sarah Hoyle, pesticide program specialist policy lead, Xerces Society for Invertebrate Conservation; and Francis Villablanca, professor, California Polytechnic State University, San Luis Obispo.
"The Senator convened the Monarch Butterfly Summit to elevate the conservation issues that western monarchs face, and to include policy makers in work sessions to identify solutions," Black noted. "Working closely with the USFWS and Xerces, Senator Merkley ensured that issues like pesticides, the availability of early emerging native milkweeds in the spring breeding areas, loss and degradation of western monarch overwintering sites, and other important issues would be highlighted throughout the meeting. Sarina and Sarah did an amazing job representing Xerces – not only in their talks, but in the working groups."
Black wrote that the event "raised the profile of western monarchs. One participant that came up to me enthusiastically and said, 'This was incredible. I have been working on monarchs for decades and never expected to come to a meeting where three U.S. Senators [Merkley, Padilla-CA, Wyden-OR] a congressperson [Panetta-CA] and the Secretary of Interior [Deb Haaland] come to talk about western monarchs!'"
In a news release, the U.S. Department of Interior noted: "In the 1980s, more than 4.5 million monarchs overwintered along the California Coast. Currently, the western overwintering population has declined by more than 95 percent. In 2020, western monarch numbers dropped to all-time lows when only 1,900 overwintering monarchs were observed. In 2021, biologists and the public alike were greeted with the news that monarch numbers were heading in the right direction with approximately 250,000 monarchs estimated at overwintering groves along the coast of California."
"There is no single cause for the extreme multi-decade drop in the western monarch butterflyoverwintering population numbers," according to the Department of Interior, which aims to play "a central role in how the United States stewards its public lands, increases environmental protections, pursues environmental justice, and honors our nation-to-nation relationship with Tribes.
On July 21, the International Union for Conservation of Nature (IUCN), which works in the field of nature conservation and sustainable use of natural resources, listed the migratory monarch on its Red List of Threatened Species (Endangered). It is not yet listed as endangered by the U.S. Fish and Wildlife Service, but is listed (as of Dec. 15, 2020) as a candidate. (See more on the monarch butterfly on the USFWS website.)
“First, we documented early and late seasonal windows of opportunity in the wild, migratory western monarch population," the UC Davis professor said. "Second, our data suggest that early and late seasonal windows were constrained by different factors. Third, climatic and microclimatic variation had a strong effect on the timing and importance of multiple factors affecting monarch development. Broadly, we hope that this study contributes to a more temporally detailed understanding of the complex factors that contribute to year-to-year variation in monarch breeding success.”
The project, funded by two of Yang's National Science Foundation grants, involved UC Davis, Davis Senior High School and the Center for Land-Based learning. Among them were 107 high school students and a K-12 teacher, 18 UC Davis undergraduate students, three graduate students and two post-graduate researchers.
“This study collected a high-resolution temporal dataset on milkweed-monarch interactions during the last three years prior to the precipitous single-year population decline of western monarchs in 2018," Yang said. He organized and led a 135-member team, all co-authors of the paper, “Different Factors Limit Early- and Late-Season Windows of Opportunity for Monarch Development,” published in the journal Ecology and Evolution. (This document is open access at https://bit.ly/3volFaI.)
Other monarch research from the Yang lab is pending publication. Professor Yang discussed the monarch crisis on Science Friday, National Public Radio, on Feb. 4, 2022. (See 'How Long Will California's Butterfly Boom Last')