The DOI matches its Crossref record; 33 of the 33 references it cites were found in a registry or an index.
Latitudinal Clines: A Trade‐Off between Egg Number and Size in Pacific Salmon
Abstract
The latitudinal variation in clutch size found in many animal species, including Pacific salmon, has been an enigmatic problem in ecology. We analyze egg number and egg size of 17 populations of coho salmon (Oncorhynchus kisutch) distributed over a latitudinal gradient in North America. These populations have a significant latitudinal increase in their egg number. But this increase is accompanied by a significant latitudinal decrease in their egg size. The total biomass of eggs produced also declines with latitude. Thus, the positive latitudinal trend in egg number cannot be explained by latitudinal variation in the total investment in eggs. This suggests that local optima in egg size may result in latitudinal clines in egg number. This reasoning, that egg number evolves around selection for egg size, is in fact predicted by life history theory and may explain the clutch size patterns observed in many organisms.
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Nonparametric Statistics for the Behavioral Sciences
Guitton, H., & Siegel, S. (1958) · Revue économique · doi:10.2307/3498751 · Cited by 35,245
Natural Selection, the Costs of Reproduction, and a Refinement of Lack's Principle
Williams, G. C. (1966) · The American Naturalist · doi:10.1086/282461 · Cited by 3,276
The Optimal Balance between Size and Number of Offspring
Smith, C. C., & Fretwell, S. D. (1974) · The American Naturalist · doi:10.1086/282929 · Cited by 2,918
The Significance of Clutch‐size
Lack, D. (1947) · Ibis · doi:10.1111/j.1474-919x.1947.tb04155.x · Cited by 2,064
Olfactory Imprinting and Homing in Salmon
Hasler, A. D., & Scholz, A. T. (1983) · Zoophysiology · doi:10.1007/978-3-642-82070-0 · Cited by 622
M., J. E., & Hart, J. L. (1974) · Copeia · doi:10.2307/1443050 · Cited by 603
Optimal Egg Size and Clutch Size: Effects of Environment and Maternal Phenotype
Parker, G. A., & Begon, M. (1986) · The American Naturalist · doi:10.1086/284589 · Cited by 576
Parental Investment in Offspring in Variable Environments: Theoretical and Empirical Considerations
McGinley, M. A., Temme, D. H., & Geber, M. A. (1987) · The American Naturalist · doi:10.1086/284716 · Cited by 539
Berven, K. A. (1982) · Evolution · doi:10.1111/j.1558-5646.1982.tb05466.x · Cited by 444
Leggett, W. C., & Carscadden, J. E. (1978) · Journal of the Fisheries Research Board of Canada · doi:10.1139/f78-230 · Cited by 353
Cited by
Klemetsen, A., Amundsen, P. ‐., Dempson, J. B., Jonsson, B., Jonsson, N., O'Connell, M. F., & Mortensen, E. (2003) · Ecology of Freshwater Fish · doi:10.1034/j.1600-0633.2003.00010.x · Cited by 1,382
Oocyte growth and development in teleosts
Tyler, C. R., & Sumpter, J. P. (1996) · Reviews in Fish Biology and Fisheries · doi:10.1007/bf00122584 · Cited by 783
Effects of stress on fish reproduction, gamete quality, and progeny
Schreck, C. B., Contreras-Sanchez, W., & Fitzpatrick, M. S. (2001) · Aquaculture · doi:10.1016/s0044-8486(01)00580-4 · Cited by 632
Partial migration: niche shift versus sexual maturation in fishes
Jonsson, B., & Jonsson, N. (1993) · Reviews in Fish Biology and Fisheries · doi:10.1007/bf00043384 · Cited by 631
Geographic range limits: achieving synthesis
Gaston, K. J. (2009) · Proceedings of the Royal Society B: Biological Sciences · doi:10.1098/rspb.2008.1480 · Cited by 594
Metadata
- Authors
- Fleming, I. A., & Gross, M. R.
- Venue
- Ecology
- Publisher
- Wiley
- Published
- 1990-02
- Volume
- 71
- Issue
- 1
- Pages
- 1-11
- ISSN
- 0012-9658 (ISSN-L)
- 1939-9170
- OpenAlex
- W2084169828
- Cited by
- 405
- References
- 33
- FWCI
- 18.64
- Type
- journal article
- Language
- en
- Open access
- closed
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.