Manuel Morales to Give 2019 Sigma Xi Talk on Mutualism

Media contact: Noelle Lemoine, executive assistant; tele: 413-597-4277; email: [email protected]

WILLIAMSTOWN, Mass., October 15, 2019—Manuel Morales, professor of biology at Williams College, will present “Mutualism: When is Good-Good Too Much of a Good Thing?” for the college’s autumn Sigma Xi lecture. The talk will take place on Friday, Oct. 25, at 4:15 p.m. in Thompson Chemistry’s Wege Auditorium. A reception will follow in the Science Atrium. This event is free and open to the public.

Mutualisms are interactions between species where both partners benefit, i.e., “good-good.” Despite the short-term positive effect of mutualism, theory suggests that mutualism may nevertheless be destabilizing in the longterm. In his talk, Morales will outline the theoretical basis for predictions of instability in mutualism, and present results from his own work that test these predictions.

Morales is an ecologist who studies the population and community dynamics of mutualisms. He earned an A.B. in biology from Kenyon College, and a Ph.D. in ecology at the University of Connecticut.

Sigma Xi is a national society honoring and encouraging research in science since 1886. The Williams Chapter was founded in 1969. It recognizes exceptional graduating students in the sciences each year. The Sigma Xi lecture is a semiannual event highlighting the current research of a Williams faculty member.


For building locations on the Williams campus, please consult the map outside the driveway entrance to the Security Office located in Hopkins Hall on Main Street (Rte. 2), next to the Thompson Memorial Chapel, or call the Office of Communications 413-597-4277. The map can also be found on the web at