25_Competition - Competition Today's questions(one more...

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Competition Today’s questions: (one more topic in behavioral ecology = kin selection) (one more topic in behavioral ecology kin selection) I. How does competition work? (theory) II Observational studies of competition II. III. Experimental studies of competition
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How does kin selection work? Question: When do alleles that lead to altruism increase in frequency in a population? Answer: When they increase the fitness of related l individuals. Direct fitness = Indirect fitness = Inclusive fitness =
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I. How does competition work? (theory) A. Why are fundamental and realized niches different? % used % low Range of resources high
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B Niche differentiation (resource partitioning) B. Niche differentiation (resource partitioning) Start of competition: Species A Species B % used % small Size of nesting cavity large
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After many generations: Species A Species B % used % small Size of nesting cavity large
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B. Symmetric and asymmetric competition fitness verage f Av Species A A+B Species B only only
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D. Competitive exclusion e e ion size tion size opulati Populat P Time P Time
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