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Unlike other anadromous salmonids, sea-run cutthroat trout do not over-winter in the ocean and only rarely make long extended migrations across large bodies of water.
They migrate in the nearshore marine habitat and usually remain within 10 km of land (Sumner 1972, Giger 1972, Jones 1976, Johnston 1981).
Still other cutthroat trout may migrate only into rivers or lakes (Nicholas 1978b, Tomasson 1978, Moring et al.
1986, Trotter 1989), even when they have seawater access (Tomasson 1978).
The eastern range appears to be bounded by the Cascade Mountain Range in California, Oregon, and Washington and by the Coast Range in British Columbia and southeast Alaska (Fig. As pointed out by Trotter (1989) and Trotter et al.
(1993), this range coincides closely with the coastal temperate rain forest belt defined by Waring and Franklin (1979), and even when the fish have access beyond the coastal rainforest, such as in the Columbia River, they penetrate only a limited distance (Sumner 1972; Trotter 1987, 1989).
While most anadromous cutthroat trout enter seawater as 2- or 3- year-olds, some may remain in fresh water for up to 5 years before entering the sea (Sumner 1972, Giger 1972).
Other cutthroat trout may never outmigrate at all, but remain as residents of small headwater tributaries.
You can always update your preferences in the Privacy Centre.Cutthroat and rainbow trout are native to western North America.Historically, cutthroat trout were the more broadly distributed species (Behnke 1979, 1992), but in recent years they have been replaced by rainbow trout or other introduced species in many parts of their range.To give you a better overall experience, we want to provide relevant ads that are more useful to you.For example, when you search for a film, we use your search information and location to show the most relevant cinemas near you.