Upcoming Colloquia

All seminars will be held in the MBI Lecture Hall - Jennings Hall, Room 355 - unless otherwise noted.

February 23, 2015 3:00 - 3:50PM
Host: Yuan Lou

Zebrafish is a small fish with distinctive black and yellow stripes that form during early development due to cell differentiation and movement. I will discuss an agent-based model for stripe formation in zebrafish that incorporates biological data. This model can reproduce ablation experiment and make predictions for the development of stripes from a larval pre-pattern and the effect of mutations. Among the conclusions are that fish growth shortens the necessary scale for long-range interactions and that iridophores, a third type of pigment cell, help maintain stripe boundary integrity.

March 02, 2015 3:00 - 3:50PM
Host: Marty Golubitsky

Humans are unique both in their cognitive abilities and in the extent of cooperation in large groups of unrelated individuals. How our species evolved high intelligence in spite of various costs of having a large brain is perplexing. Equally puzzling is how our ancestors managed to overcome the collective action problem and evolve strong innate preferences for cooperative behaviour. Here, I theoretically study the evolution of social-cognitive competencies as driven by selection emerging from the need to produce public goods in games against nature or in direct competition with other groups. I use collaborative ability in collective actions as a proxy for social-cognitive competencies. My results suggest that collaborative ability is more likely to evolve first by between-group conflicts and then later be utilized and improved in games against nature. Evolution of collaborative ability creates conditions for the subsequent evolution of collaborative communication and cultural learning. 

TBD
March 09, 2015 3:00 - 3:50PM
Host: TBD

Abstract not submitted.

TBD
April 06, 2015 3:00 - 3:50PM
Host: TBD

Abstract not submitted.

TBD
April 20, 2015 3:00 - 3:50PM
Host: TBD

Abstract not submitted.