BIO205H5 Lecture Notes - Lecture 7: Semelparity And Iteroparity, Agave Parryi
Document Summary
Don"t lose the facts for the figures: how does a single squirrel affect the numbers, how many offspring a squirrel gave birth, mortality rates. Life tables reflect life history characteristics such as: growth rate, age of first reproduction, number of offspring, longevity. Consider the options: huge amount of variability iclicker question: the organisms reproduces shortly after birth and continues to reproduce every year, giving birth to numerous, large offspring. Young parent can"t give birth to large offspring. Experience to pass on to your offspring to increase survival. More resources accumulated when the organism is older. Unlimited resources: higher fecundity costs parents years of their lives, the curve usually looks like a downward curve from left to right. Animals have to behave strategically: limitations are imposed by. Energetic: each action has associated benefits and costs, each strategy involves trade-offs. We can study such trade-offs in golden rods: trade off of size in weight of seed for number of seeds.
