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Age and Growth of the Brown Trout, Salmo Trutta Fario Linnaeus, in Logan River, Utah
Author(s) -
Sigler William F.
Publication year - 1952
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1951)81[171:aagotb]2.0.co;2
Subject(s) - brown trout , salmo , canyon , trout , fishery , hydrology (agriculture) , zoology , biology , geography , fish <actinopterygii> , geology , geomorphology , geotechnical engineering
The Logan River flowing southwesterly through the mountains of Cache County, Utah, is comparatively cold to the mouth of Logan Canyon. The stream is characterized by steep gradient, a high velocity and relatively few pools. A total of 1,053 brown trout were examined during the course of this study; 286 were retained for age and growth determinations. The body‐scale relationship is L = 40.46 mm. + 0.44185R + 0.01908R 2 where L equals standard length in millimeters, and R equals scale radius times 80. The relationship of standard length to weight is described by the formula W = 0.000022L 2.96 . The rate of growth in length of Logan River brown trout is comparable to that of several other populations. The relative weight is somewhat higher.