EEB 2244 Lecture 7: Life Histories
22 Dec 2018
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Document Summary
Life histories: the series of changes undergone by an organism during its lifetime. Strategy organisms have for sexual maturation, reproduction and longevity are also shaped by natural selection. The goal of life history theory is to understand the variation in such life history strategies among different organisms. Frogs go through metamorphosis and have a relatively short life span, often having. Life history is the schedule of an organism"s birth, growth, development, reproduction, Big part of ecology is learning how organisms are adapted to their environments. many offspring at once. Analyzing life histories is one approach to that. and survival. reproductive success investments in fitness. reproduce and pass on its genes. Represents an allocation of limited time and resources to achieve maximum. To be successful in natural selection an organism needs to survive long enough to. Sockeye salmon reproduces only once, producing a clutch size of 3,000, right before it dies.
