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DTSTAMP:20261022T150756
DTSTART;TZID=America/Detroit:20261103T120000
DTEND;TZID=America/Detroit:20261103T130000
SUMMARY:Workshop / Seminar:EEB Tuesday Seminar Series - Multi-environment fitness landscapes suggest effectively endless adaptation
DESCRIPTION:Seminar Summary - The number of beneficial substitutions (N) required for an adapting population to reach a fitness peak is a fundamental but unknown parameter of evolution. We find that N increases linearly with the number of variable sites in empirical fitness landscapes\, regardless of prior adaptation in another environment. Extrapolation suggests a minimal N of 10⁵ for typical prokaryotes and 10⁷ for mammals. In contrast\, in highly rugged shuffled landscapes\, N is markedly reduced\, while fitness gains also shrink. The relatively smooth empirical landscapes therefore enable greater fitness gains while lengthening adaptive walks\, rendering even local fitness peaks effectively unreachable because natural environments inevitably change. These results explain the persistence of fitness gains in long-term evolution experiments under constant environments and the widespread occurrence of beneficial mutations across species. They suggest that populations continuously adapt while remaining far from fitness optima\, challenging the long-held view that adaptation culminates at fitness peaks.
UID:153995-21917003@events.umich.edu
URL:https://events.umich.edu/event/153995
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Professional Development,Research,Science,seminar,Talk,Workshop
LOCATION:Biological Sciences Building - 3150
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20261029T133042
DTSTART;TZID=America/Detroit:20261110T120000
DTEND;TZID=America/Detroit:20261110T130000
SUMMARY:Workshop / Seminar:EEB Tuesday Seminar Series - mm-Scale Computers for Small Animal Studies
DESCRIPTION:Seminar Summary -  In this talk\, we will discuss recent advances in small-scale computing systems that have opened up a range of new application areas. By reducing the power consumption of electronic circuits\, the battery and/or energy-harvesting source can be shrunk to sub-millimeter dimensions\, allowing the overall system size to shrink as well. We will give a high-level overview of these low-power techniques and then illustrate a number of applications\, including small-animal tracking.
UID:154287-21917507@events.umich.edu
URL:https://events.umich.edu/event/154287
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:eeb,Environment,environmental,evolution,evolutionary biology,Research,Science,seminar,Workshop
LOCATION:Biological Sciences Building - 4150
CONTACT:
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