. The Canadian field-naturalist. 334 The Canadian Field-Naturalist Vol. 110. Figure 3. Photomicrograph of a scale taken from the pre- ferred area of the Chum Salmon. Note the lack of a freshwater growth zone, the globular reticula- tions (A) characteristic of Chum Salmon (Bilton et al. 1964), and the three annuli. In addition, the overall appearance of the scale is characteristic of Chum Salmon, with a bolder, more open appear- ance, and broader shoulders than is evident on the scales of other species (Mosher 1969). The indi- vidual is age Salmon spawning on the Adams River, rather than a
. The Canadian field-naturalist. 334 The Canadian Field-Naturalist Vol. 110. Figure 3. Photomicrograph of a scale taken from the pre- ferred area of the Chum Salmon. Note the lack of a freshwater growth zone, the globular reticula- tions (A) characteristic of Chum Salmon (Bilton et al. 1964), and the three annuli. In addition, the overall appearance of the scale is characteristic of Chum Salmon, with a bolder, more open appear- ance, and broader shoulders than is evident on the scales of other species (Mosher 1969). The indi- vidual is age Salmon spawning on the Adams River, rather than a single male both unusually early in its run timing and far from its birthplace. Acknowledgments Partial funding was received under Grant Number 061-42-2317, from the Canadian Department of Foreign Affairs, Industry, and Trade. Literature Cited Beacham, T. D., and P. Starr. 1982. Population biology of Chum Salmon, Oncorhynchus keta, from the Fraser River, British Columbia. Fisheries Bulletin 80: 813-825. Bilton, H. T., D. W. Jenkinson, and M. P. Shepard. 1964. A key to five species of Pacific Salmon (Genus Oncorhynchus) based on scale characters. Journal of the Fisheries Research Board of Canada, 21: 1267-1288. FarweU, M. K., N. D. Schubert, K. H. Wilson, and C. R. Harrison. 1987. Salmon escapements to streams entering statistical areas 28 and 29, 1951 to 1985. Canadian Data Report Fisheries and Aquatic Sciences, Number 601. FHIP. 1990. Fish Habitat Inventory and Information Program. Stream Summary Catalogue. Subdistrict 29E, Chilliwack. Department of Fisheries and Oceans, Vancouver, British Columbia. Unpaginated. FHIP. 1992. Fish Habitat Inventory and Information Program. Stream Summary Catalogue. Subdistrict 29F, Lillooet. Department of Fisheries and Oceans, Vancouver, British Columbia. Unpaginated. Gilhousen, P. 1980. Energy sources and expenditures in Fraser River sockeye salmon during their spawning migration. International Pacific Salmon Fisheries Commission Bulletin 22.
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