Variation in salmonid life histories: patterns and perspectives.

Mary F. Willson

doi:10.2737/PNW-RP-498

Treesearch

Variation in salmonid life histories: patterns and perspectives.

Informally Refereed

Authors:

Mary F. Willson

Year:

1997

Type:

Research Paper

Station:

Pacific Northwest Research Station

DOI:

https://doi.org/10.2737/PNW-RP-498

Source:

Res. Pap. PNW-RP-498. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 50 p

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Abstract

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.

Keywords

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

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