. The Canadian field-naturalist. 1989 Hughes and Peden: Status of the Umatilla Dace 195. Figure 2. Distribution of Rhinichthys umatilla based on specimens examined in this study. Population Size and Trends Numbers of R. umatilla collected from various Canadian drainages are listed in Table 1. Otter Creek below Otter Lake, the Kettle River below Cascade, the Columbia River between Castlegar and Blueberry Creek, and the Kootenay River above Brilliant were surveyed and sampled by water access. Other Columbia River and Similkameen River collections were made at road access points. With the excepti
. The Canadian field-naturalist. 1989 Hughes and Peden: Status of the Umatilla Dace 195. Figure 2. Distribution of Rhinichthys umatilla based on specimens examined in this study. Population Size and Trends Numbers of R. umatilla collected from various Canadian drainages are listed in Table 1. Otter Creek below Otter Lake, the Kettle River below Cascade, the Columbia River between Castlegar and Blueberry Creek, and the Kootenay River above Brilliant were surveyed and sampled by water access. Other Columbia River and Similkameen River collections were made at road access points. With the exception of 20 large (more than 40 mm) specimens from Otter Creek, only 13 adults have been taken in British Columbia. However, the capture of juveniles from nearshore habitat suggests reproductive success in the lower Similkameen, Kettle, Kootenay and Columbia waters within the province. The location of concentrations of breeding adults in Canada is not known, however, upstream migrations offish from the could be affecting the population size and success on the Similkameen and Kettle rivers. Juveniles have been found near adults in the Columbia and Kettle rivers of Canada and the Similkameen River just south of the international border between Nighthawk and Oroville, USA. No juveniles were found with the larger fish ( to. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club
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