Biology / Bio 3555 · Atom · ~20 seconds
Life History Strategy Shaped by Natural Selection
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A species' life history — age at first reproduction, offspring per event, parental investment — is shaped by selection to maximize lifetime reproductive success under its mortality pattern.
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A Type III species like a fish produces many offspring with little care, matching high early mortality.
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Life history traits trade off — selection cannot maximize offspring number, size, and parental investment at once.