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    Author(s): Mary F. Willson
    Date: 1997
    Source: Res. Pap. PNW-RP-498. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 50 p
    Publication Series: Research Paper (RP)
    Station: Pacific Northwest Research Station
    PDF: View PDF  (233 KB)

    Description

    Salmonid fishes differ in degree of anadromy, age of maturation, frequency of reproduction, body size and fecundity, sexual dimorphism, breeding season, morphology, and, to a lesser degree, parental care. Patterns of variation and their possible significance for ecology and evolution and for resource management are the focus of this review.

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    Citation

    Willson, Mary F. 1997. Variation in salmonid life histories: patterns and perspectives. Res. Pap. PNW-RP-498. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 50 p

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    Keywords

    Salmon, char, Oncorhynchus, Salmo, Salvelinus, life history, sexual dimor-phism, age of maturation, semelparity, anadromy, phenology, phenotypic variation, parental care, speciation

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