- Author: Kathy Keatley Garvey
The Gulf Fritillary, Agraulis vanillae, is definitely back from a comeback, at least in the Sacramento, Davis and Vacaville-Fairfield areas.
In September of 2009, butterfly guru Art Shapiro, now a UC Davis distinguished professor emeritus, excitedly announced the re-appearance of the Gulf Fritillary butterfly in the Sacramento metropolitan area after a four-decade absence, and in the Davis area after a 30-year absence.
The showy butterfly colonized both south Sacramento and the Winding Way/Auburn Boulevard area in the 1960s but by 1971 "apparently became extinct or nearly so," recalled Shapiro, who has monitored the butterfly populations of central California since 1972 and maintains a research website at https://butterfly.ucdavis.edu.
It's a tropical and subtropical butterfly with a range that extends from the southern United States all the way to central Argentina.
No one knows exactly when the first Gulf Frit first arrived in California, but "it was already in the San Diego area by about 1875, Shapiro says, and it was first recorded in the San Francisco Bay Area around 1908.
A recent piece in The Acorn, published by the Effie Yeaw Nature Center, Carmichael, and authored by UC Davis entomologist Mary Louise Flint (see article), indicated the Gulf Fritillary is doing well in the area.
Good news!
- Author: Kathy Keatley Garvey
Noted bee scientist Jamie Ellis, a University of Florida professor, will speak on "Understanding the Risks that Pesticides Pose to Honey Bees" at a UC Davis seminar at 4:10 p.m., Monday, April 1. This is a zoom seminar.
Here are the particulars!
- Author: Kathy Keatley Garvey
Monarchs and California golden poppies...Color them orange...Color them bold...Color them beautiful...
And color them natives...
The California golden poppy, Eschscholzia californica, California's state flower, is popping up all over, while monarchs, Danaus plexippus, are winging their way inland from their overwintering sites along the California coast.
The overwintering population in California dropped this year by 30 percent as compared to last year, according to the Xerces Society for Invertebrate Conservation. The stormy weather didn't help.
"The 27th annual Thanksgiving count ran from November 11 through December 3, 2023, totaling 233,394 butterflies across 256 overwintering sites in the western United States," Xerces reports on its website. "This tally is slightly lower than last year's (330,000), yet similar to the 2021 count. The overwintering population of western monarchs remains at approximately 5% of its size in the 1980s."
Overall, habitat loss and increased use of pesticides and herbicides continue to be key factors in the decline of the monarch population.
Interestingly enough, both monarchs and California golden poppies are toxic. "All parts of the (California golden poppy) plant have toxic properties if ingested," according to the State of California Capitol Museum website. And, as we all know, monarchs are toxic. As caterpillars, monarchs sequester or store toxins from milkweed, and those toxins help protect them from predators. The coloring is also a deterrent.
Two natives, toxic, but beautiful...
