Pacific salmon grow, mate, and then reproduce once, a process known as spawning. Soon after they spawn, these fish die. These salmon are considered

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Pacific salmon are an example of semelparity, where they only reproduce once before they die. This is in contrast to iteroparity, where organisms reproduce multiple times throughout their lifespan. K-selection and Bateman's principle are both concepts related to reproductive strategies, but they are not specifically applicable to Pacific salmon. Zimmer's paradox is not relevant to this question.

Pacific Salmon Grow, Mate, and Then Reproduce Once, a Process