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GGAM PhD Exit Seminar: Predator Evolution can Mediate Equilibrium or Oscillatory Coexistence Among Competing Prey
Mathematical Biology| Speaker: | Samuel Fleischer, UC Davis |
| Related Webpage: | https://www.math.ucdavis.edu/~sfleisch/ |
| Location: | Online (zoom) |
| Start time: | Mon, Jun 8 2020, 3:10PM |
Competition among prey can be qualitatively changed in the presence of predators. In some cases, the presence of one or more predators reduces diversity. In other cases, predators can mediate coexistence among prey which would not ordinarily coexist. Among the mechanisms that promote coexistence among competing prey are ontogenetic diet shifts within predators, dispersal of an inferior prey, and prey evolution in the absence of a predator. Here we study the effect of a generalist predator with evolutionary trade-offs between attack rates on two competing prey or assimilation efficiencies of two competing prey. Attack rate evolution can promote permanence (a robust form of coexistence) between prey that would not ordinarily coexist (even in the presence of a non-evolving predator), while evolution of assimilation efficiency cannot.
Note that this seminar is online at https://ucdavisdss.zoom.us/j/99480513904. Please email Rishidev Chaudhuri for the password or see the math bio seminar series email.