EEB 390 Lecture Notes - Lecture 21: P53, Group Selection, Optimality Theory
23 Dec 2020
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Males only repoduce from one period of time, and die. Some plant species produce seeds synchronously with other species. Pressure from small mammals that eat tries. Masting season where over produce seeds, mammals will produce a lot and then many mammals die so next season the trees will be very successful. Number of o spring ex) blue wales and orchids. Calf will grow very fast - lots of investment (1 or 2 offsprings) Contrast will vanilla orchids produce millions and billions of seeds with little effort put into it. Understanding the evolution of these is life history evolution. Number and size of offspring life history: investment an organism makes in growth and reproduction. We need to think of it as an individual. We have discussed tness as just traits that increase reproductive tness. We need to think of tness throughout the life of the individual in a population (adaptation and natural selection, williams, 1966)
