Monarch butterfly expert and and AAAS Science and Technology Policy Fellow Dara Satterfield will visit San Antonio this fall for the 2019 Monarch Butterfly and Pollinator Festival. Satterfield, an authority on insect ecology and migration, will lead a workshop on monarch butterfly disease, sit on a panel discussion of how climate change effects migration and immigration, and teach a class at Trinity University as a visiting scholar.
Satterfield has visited San Antonio before. Back in 2013, she was one of the first scientists to study “the milkweed patch,” an urban monarch butterfly garden along the Museum Reach stretch of the San Antonio River comprised entirely of Tropical milkweed. That visit resulted in a series of studies that have made Tropical milkweed, Asclepias curassavica, the subject of much debate and sometimes contention.
Along with others that followed, Satterfield’s study suggested that the rigorous growth and heartiness of Asclepias curassavica, technically not native to he U.S., could negatively effect monarchs’ health and migration. Because of Tropical milkweed’s continuous availability–and its wide commercial availability, unlike native milkweeds–the plant can encourage monarchs to break their migration and breed locally. Continued egg laying on plants can also cause a build-up of a nasty monarch-centric disease, known as Ophryocystis elektroscirrha, or OE for short.
Satterfield works with the citizen science initiative Monarch Health, which tracks the prevalence of OE. Through this project, volunteers test for parasites in monarchs and help track the spread of the parasite across North America. The program couples citizens and scientists to increase understanding of host-parasite interactions in monarchs and enhance understanding of monarch biology and conservation.
Following an undergraduate degree in biology from Agnes Scott College, Satterfield earned her Ph.D in Ecology from the University of Georgia. She currently serves as a AAAS Science and Technology Policy Fellow, focusing on international wildlife conservation.
“I have been struck in recent years by the literal links between animal migration and humans,” Satterfield said via email recently, adding that human and animal long-distance movements share similar drivers.
“Essentially, animals move to escape poor conditions or to pursue advantageous habitats for survival and reproduction…I think we can identify with these difficult animal migrations. We as humans understand on a fundamental level the idea of obstacles in a path that is still worth traveling,” she said.
Satterfield will bring her broad understanding of the monarch butterfly migration to the Pearl Stable on October 18 for our forum, Butterflies without Borders: migration and immigration in our changing climate. She joins fellow panelists John Burnett, border correspondent for National Public Radio and Rodrigo Medellín, the “Bat Man of Mexico” on a timely panel discussion that will explore the intersections of politics, people and pollinators. Rivard Report environmental journalist Brendan Gibbons will moderate.
The week of the Forum and Festival, Satterfield will serve as a visiting scholar at Trinity University, teaching a class to environmental sciences students. She will also lead a lunch-and-learn workshop at the San Antonio Botanical Garden Friday, October 18, Keeping Monarchs Healthy. The workshop will explore how native versus tropical milkweeds affect monarch health and migration and how to test live monarch butterflies for OE.
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