Abstract
A major division in life-history classifications are semelparous organisms which reproduce once in their lifetimes and then die versus iteroparous organisms which may reproduce multiple times after becoming sexually mature. In 1954 Lamont Cole (Cole, 1954) developed a simple model to compare population growth rates for a semelparous organism and an iteroparous organism. He concluded that a semelparous organism could equal the growth rate of an immortal iteroparous organism by simply producing one additional offspring. This result suggests that iteroparity should be a rare life-history strategy, yet in fact it is quite common and hence the paradox.
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