Species-level morphological changes on geological time scales: cheilostome bryozoans as a study system

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• Professor Lee Hsiang Liow, University of Oslo
• Tuesday 22 October 2024, 13:00-14:00
• Part II Lecture Theatre, Department of Zoology.

If you have a question about this talk, please contact Henry North.

Evolutionary trait models such as random walks and those capturing evolutionary optima (Ornstein-Uhlenbeck models) are often applied to paleontological time series, to identify the mode and quantify the tempo of long-term trait evolution in species-lineages. Using a unique model system of New Zealand cheilostome bryozoans, I fit such models, but also examine trait-fitness relationships by using preserved traits that reflect fitness components. These include partial mortality and mean fecundity estimated from fossil populations.  Although the story I present is complex and time-varying, the ecological and evolutionary processes inferred on shorter timescales are not inconsistent with macroevolutionary patterns observed geological timescales.

This talk is part of the Zoology Departmental Seminar Series series.

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• Part II Lecture Theatre, Department of Zoology
• Zoology Departmental Seminar Series

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