oceany: Coastal cutthroat trout

Evidence: 100 • authority: 72

The coastal cutthroat trout (Oncorhynchus clarkii, sometimes referred as Oncorhynchus clarkii clarkii), also known as the sea-run cutthroat trout, blue-back trout or harvest trout, is one of the four species of cutthroat trout found in western North America. The coastal cutthroat trout occurs in four distinct forms. A semi-anadromous or sea-run form is the most well known. Freshwater forms occur in both large and small rivers and streams and lake environments. The native range of the coastal cutthroat trout extends south from the southern coastline of the Kenai Peninsula in Alaska to the Eel River in Northern California. Coastal cutthroat trout are resident in tributary streams and rivers o…

Evidence: 45 • authority: 72

The cutthroat trout (Oncorhynchus clarkii clade) is a clade of four fish species of the family Salmonidae native to cold-water tributaries of the Pacific Ocean, Rocky Mountains, and Great Basin in North America. These four species are the Coastal (O. clarkii), Westslope (O. lewisi), Lahontan (O. henshawi), and the Rocky Mountain (O. virginalis). As a member of the genus Oncorhynchus, it is in the Pacific trout group, which includes the widely distributed rainbow trout. Cutthroat trout are popular gamefish, especially among anglers who enjoy fly fishing. The common name "cutthroat" refers to the distinctive red coloration on the underside of the lower jaw. The specific name clarkii was given…

Evidence: 43 • authority: 92

Shrinking sizes of trout and salamanders are unexplained by climate warming alone.. Decreases in body sizes of animals related to recent climate warming can affect population persistence and stability. However, direct observations of average sizes over time and their interrelationships with underlying density-dependent and density-independent processes remain poorly understood owing to the lack of appropriate long-term datasets. We measured body size of two species common to headwater streams in coastal and Cascades ecoregions of the Pacific Northwest of North America over multiple decades, comparing old-growth and managed forests. We found consistent decreases in median length of Coastal C…

Evidence: 38 • authority: 72

The rainbow trout (Oncorhynchus mykiss) is a species of trout native to cold-water tributaries of the Pacific Ocean in North America and Asia. The steelhead (sometimes called steelhead trout) is an anadromous (sea-run) form of the coastal rainbow trout (O. m. irideus) or Columbia River redband trout (O. m. gairdneri) that usually returns to freshwater to spawn after living two to three years in the ocean. Adult freshwater stream rainbow trout average between 0.5 and 2.5 kilograms (1 and 5 lb), while lake-dwelling and anadromous forms may reach 9 kg (20 lb). Coloration varies widely based on subspecies, forms, and habitat. Adult fish are distinguished by a broad reddish stripe along the late…

Evidence: 36 • authority: 92

Inversion Polymorphisms Carried by Introduced Rainbow Trout Disrupt Hybrid Zones Between Native Species.. Genomic mechanisms explaining why some hybrid zones remain stable while others collapse into hybrid swarms are poorly understood. In Montana's Kootenai River Basin, native interior redband trout (Oncorhynchus mykiss gairdneri; IRT) and westslope cutthroat trout (O. lewisi; WCT) are naturally sympatric and historically exhibited limited hybridization. However, the introduction of allopatric coastal rainbow trout (O. m. ssp.; CRT) has coincided with hybrid swarm formation. Using novel IRT linkage maps and 3489 individuals genotyped at 189,984 SNPs, we characterized the role of genome stru…

Evidence: 36 • authority: 72

Lahontan cutthroat trout, Oncorhynchus henshawi, (formerly, O. clarkii henshawi) formerly all grouped together as the cutthroat trout under a single species Oncorhynchus clarkii with many subspecies, is a fish species of the family Salmonidae native to cold-water tributaries of the Basin and Range province of Nevada, as well as adjoining areas of southeast Oregon and northeastern California. As a member of the genus Oncorhynchus, it is a part of the Pacific trout group, which includes the widely distributed rainbow trout. Cutthroat trout are popular gamefish, especially among fly fishing anglers. The common name "cutthroat" refers to the iconic red slash on the underside of the lower jaw. T…

Evidence: 29 • authority: 80

Species profiles: Life histories and environmental requirements of coastal fishes and invertebrates (Pacific Northwest): Sea-run cutthroat trout

Evidence: 29 • authority: 80

Evaluate Status of Coastal Cutthroat Trout in the Columbia River Basin above Bonneville Dam, 2001 Annual Report.

Evidence: 29 • authority: 72

The Rocky Mountain cutthroat trout (Oncorhynchus virginalis), formerly lumped in with the cutthroat trout (Oncorhynchus clarkii) as one species with multiple subspecies, is a fish species of the family Salmonidae native to cold-water tributaries of the northern and southern Rocky Mountains, as well as into portions of the Great Basin in North America. As a member of the genus Oncorhynchus, it is a part of the Pacific trout group, which includes the widely distributed rainbow trout. Cutthroat trout are popular gamefish, especially among anglers who enjoy fly fishing. The common name "cutthroat" refers to the distinctive red coloration on the underside of the lower jaw.

Evidence: 21 • authority: 88

Movement Patterns and Habitat Selection of Lahontan Cutthroat Trout in a Great Basin Stream. Abstract Background : Understanding the movement of organisms is critical for species conservation in the context of changing landscapes and climate. As climatic extremes impact the United States Great Basin, quantifying the movements of native fishes like Lahontan cutthroat trout ( Oncorhynchus clarkii henshawi ) is vital for facilitating their persistence. These climatic extremes are projected to alter flow regimes, specifically, reducing hydrologic connectivity needed to maintain populations. By studying fish movement patterns during streamflow recession and baseflow conditions, we can identify t…

Evidence: 21 • authority: 92

A genome assembly for Lahontan Cutthroat Trout, Oncorhynchus clarkii henshawi.. Cutthroat trout (Oncorhynchus clarkii) are diverse Pacific salmonids widely distributed throughout western North America. Distinct lineages of cutthroat trout have been defined based on morphology, geography, and genetic differences. Several of these, including Lahontan cutthroat trout (Oncorhynchus clarkii henshawi), are classified as threatened or in danger of extinction. Despite their precarious conservation status, few genomic resources have been developed for these lineages. In an effort to promote the development and application of genomic approaches for research and conservation of this group, we present…