Social and Behavioral Sciences Commons^™

Caterpillars On A Phytochemical Landscape: The Case Of Alfalfa And The Melissa Blue Butterfly, Matthew L. Forister, Su'ad A. Yoon, Casey S. Philbin, Craig D. Dodson, Bret Hart, Joshua G. Harrison, Oren Shelef, James A. Fordyce, Zachary H. Marion, Chris C. Nice, Lora A. Richards, C. Alex Buerkle, Zach Gompert

Biology Faculty Publications

Modern metabolomic approaches that generate more comprehensive phytochemical profiles than were previously available are providing new opportunities for understanding plant‐animal interactions. Specifically, we can characterize the phytochemical landscape by asking how a larger number of individual compounds affect herbivores and how compounds covary among plants. Here we use the recent colonization of alfalfa (Medicago sativa) by the Melissa blue butterfly (Lycaeides melissa) to investigate the effects of indivdiual compounds and suites of covarying phytochemicals on caterpillar performance. We find that survival, development time, and adult weight are all associated with variation in nutrition and toxicity, including …