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QCBio Research Seminar: Casey Barkan (Wang)

April 9 @ 11:00 am - 11:30 am

TITLE: “Critical slowing down signals quasi-species extinction in an evolutionary model with environmental heterogeneity.”

ABSTRACT: Environmental heterogeneity can significantly affect the evolutionary dynamics of a population. A key parameter that determines the influence of heterogeneity is the migration rate–the rate at which organisms explore their heterogeneous environment. We study a model of a population which migrates between two habitats that exert distinct selection pressure on the population. We find that the system undergoes multiple phase transitions, each associated with the extinction of a quasispecies. The dynamics exhibit critical slowing down near each transition. Our results may be relevant to the evolution of antibiotic resistance in bacteria and evolution of gut microbiota.

Details

Date:
April 9
Time:
11:00 am - 11:30 am
Event Category:

Venue

ZOOM
CA United States
Website:
ucla.zoom.us

Organizer

QCBio

Details

Date:
April 9
Time:
11:00 am - 11:30 am
Event Category:

Venue

ZOOM
CA United States
Website:
ucla.zoom.us

Organizer

QCBio