Yui Suzuki

Tuesday, December 12th

In-Person Meeting
Virtual Zoom Option
7:30 PM EST

Dr. Yui Suzuki
Wellesley College

Insects in the Anthropocene

Abstract: How will organisms fare in the 21st century as they face extreme environmental conditions and environmental degradation? Developmental plasticity is the ability of an organism to give rise to two or more distinct phenotypes in the face of environmental changes. Developmental plasticity is thought to offer new ways for evolution to shape an organism’s phenotype, but the mechanism by which this happens remains poorly studied. A classic example of developmental plasticity that evolves through natural selection is called a polyphenism where the same individual develops into two or more alternative phenotypes depending on the environment. In our lab, we have artificially selected for a polyphenism using temperature stress to generate a novel phenotype. My talk will focus on my lab’s latest findings on how our larvae respond to thermal stress and how selection might stabilize new phenotypes. In addition to sharing some of the challenges we have faced while conducting the study and how we solved these issues, I will also share some anecdotal observations of insects in Japan.

NOTICE: We will be holding hybrid meetings to accommodate COVID-19 precautions and audience members from around the world.

For those able to attend, we will have an informal dinner at 6:00 pm at Cambridge Common Restaurant with the speaker, followed by our formal meeting (7:30 – 9:00 pm) in room MCZ 101 of the Museum of Comparative Zoology (there will be signs to help direct). The meeting will begin with club announcements, followed by a 60-minute presentation by the invited speaker and Q&A. Membership is open to amateur and professional entomologists.

Helen McCreery

Tuesday, November 14th

In-Person Meeting
Virtual Zoom Option
7:30 PM EST

Dr. Helen McCreery
Dept. of Biology, Tufts University

Problem solving and flexible control in self-organized collectives

ABSTRACT: Across levels of organization—from subcellular processes to massive animal migrations—groups accomplish tasks well beyond what individuals can do. Among the most charismatic examples of this are the accomplishments of ant colonies. Ant colonies perform impressive tasks that are impossible for individual ants. In general, there are many benefits to collective action—e.g. it is typically scalable and robust—but there are also costs associated with collective systems, including high “inertia”, which is thought to result in a loss of flexibility. For example, the positive feedbacks that allow an ant colony to choose among resources may be hard to counteract if the chosen resource disappears. Yet for some tasks, ants rapidly respond to changing conditions. I will discuss the mechanisms of ants’ collective action in two tasks that require extreme flexibility: maze-like obstacle navigation during cooperative transport, and self-assembly of living bridges in army ants.

NOTICE: Welcome to the second CEC meeting of the 2023-2024 academic year! We will be holding hybrid meetings to accommodate COVID-19 precautions and audience members from around the world.

For those able to attend in person, we will have an informal dinner with the speaker at 6:00 pm at the Cambridge Common Restaurant. Our formal meeting runs from 7:30 – 9:00 pm in the Gilbert Room 101A of the Museum of Comparative Zoology (there will be signs to help direct). The meeting will begin with club announcements, followed by a 60-minute presentation by the invited speaker and Q&A. Membership is open to amateur and professional entomologists.

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