Transcript PPT

Studies of Populations
Important Terms
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Fitness: a measure of an individual’s
ability to ensure the inclusion of their
genes/genotype in the next generation
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Reproductive success
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zero offspring = zero fitness
Fecundity: the number of offspring
produced by a female during her
lifetime
Species and their Life Histories
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K-Selected Species: populations that tend
to exist close to their carrying capacity (K)
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High density populations
Individuals must maximize efficiency at obtaining
resources to survive and reproduce
Long maturation time
Long lifespans
Low mortality rates
Fewer and larger sized offspring
Extensive parental care
Mammals
Species and their Life Histories
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r-selected species: populations that tend to
grow rapidly because of abundant resources
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low density populations
Short maturation time
Short lifespans
High mortality rates
Many small sized offspring
Zero parental care
Insects