A cutbow ('' Oncorhynchus clarkii'' × ''mykiss'') is an interspecific fertile hybrid between a rainbow trout (''Oncorhynchus mykiss'') and a cutthroat trout (''O. clarkii''). Cutbow hybrids may occur naturally where the native ranges of both species overlap, such as between

coastal rainbow trout The rainbow trout (''Oncorhynchus mykiss'') is a species of trout native to cold-water tributaries of the Pacific Ocean in Asia and North America. The steelhead (sometimes called "steelhead trout") is an anadromous (sea-run) form of the coastal ...

(''O. mykiss irideus'') and coastal cutthroat trout (''O. clarkii clarkii'') and between

Columbia River redband trout The Columbia River redband trout, the inland redband trout or the interior redband troutwestslope cutthroat trout The westslope cutthroat trout (''Oncorhynchus clarkii lewisi''), also known as the black-spotted trout, common cutthroat trout and red-throated trout is a subspecies of the cutthroat trout (''Oncorhynchus clarkii'') and is a freshwater fish in t ...

(''O. clarkii lewisi''). While natural separation of spawning habitat limited hybridization in most native populations of rainbows and cutthroats, introduction of non-native hatchery-raised rainbow trout into the native ranges of cutthroat subspecies increased the rate of hybridization. Some native cutthroat populations are, as a result, at risk due to

genetic pollution Genetic pollution is a controversial term for uncontrolled gene flow into wild populations. It is defined as "the dispersal of contaminated altered genes from genetically engineered organisms to natural organisms, esp. by cross-pollination", but ...

.Cutbow
ECOS Guide to the Ecology of the Northern Rockies

About

In the 1880s, rainbow trout were stocked in a number of different waters that already had cutthroat trout in them. Shortly after, cutbows were prominent in these waters. Cutbows are created when the female cutthroat trout's eggs are fertilized by a bigger male rainbow trout. Many fishermen get the cutbow confused with the rainbow and cutthroat trout. The cutbow has red or orange slash markings under the jaw and a silver body. Though most cutbow have dots on their bodies, patterns vary between each fish. Cutbows spawn during spring and prefer temperatures between 40 and 50°F. They are able to reproduce in natural habitats and in hatcheries. They are almost immune to

whirling disease ''Myxobolus cerebralis'' is a myxosporean parasite of salmonids (salmon and trout species) that causes whirling disease in farmed salmon and trout and also in wild fish populations. It was first described in rainbow trout in Germany in 1893, ...

, which affects most trout in

Colorado Colorado (, other variants) is a state in the Mountain states, Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the wes ...

References

External links

* http://precedings.nature.com/documents/6432/version/1/files/npre20116432-1.pdf * https://nas.er.usgs.gov/queries/factsheet.aspx?SpeciesID=904 * http://docs.streamnetlibrary.org/CoastalCutthroatData/sn600255.pdf * http://www.spokesman.com/blogs/outdoors/2011/aug/02/record-idaho-trout-was-hybrid/ * https://web.archive.org/web/20100529221503/http://www.isu.edu/~keelerne/cuttpage/SFSR.htm * https://web.archive.org/web/20100621054717/http://nhguide.dbs.umt.edu/index.php?c=fish&m=desc&id=7 * https://web.archive.org/web/20101128091813/https://research.idfg.idaho.gov/Fisheries%20Research%20Reports/Res-Rohrer1986%20Evaluation%20of%20Two%20Hybrid%20Trout%20Strains%20in%20Henrys%20Lake%20and%20Comments%20on%20Potential%20Use%20of%20Sterile%20Triploid.pdf * :File:CutbowGardnerRiverYNP.jpg * http://www.henryslakefoundation.com/hybridtrout.php * https://web.archive.org/web/20120616173509/http://wildlife.state.co.us/SiteCollectionDocuments/DOW/Fishing/FisheryWaterSummaries/Summaries/Northeast/Elevenmile2010.pdf * https://web.archive.org/web/20120526123049/http://wildlife.state.co.us/SiteCollectionDocuments/DOW/Fishing/FisheryWaterSummaries/Summaries/Northeast/Antero2011%20.pdf * http://wildlife.state.co.us/SiteCollectionDocuments/DOW/Fishing/FisheryWaterSummaries/Summaries/Southeast/TwinLakesRes2-18-11.pdf * https://web.archive.org/web/20120824190128/http://wildlife.state.co.us/SiteCollectionDocuments/DOW/Fishing/FisheryWaterSummaries/Summaries/Northeast/DepoortersLake.pdf * https://web.archive.org/web/20120824190755/http://wildlife.state.co.us/SiteCollectionDocuments/DOW/Fishing/FisheryWaterSummaries/Summaries/Southeast/DeWeeseReservoir.pdf * https://web.archive.org/web/20120824190723/http://wildlife.state.co.us/SiteCollectionDocuments/DOW/Fishing/FisheryWaterSummaries/Summaries/Northeast/JumboReservoir.pdf * http://wildlife.state.co.us/SiteCollectionDocuments/DOW/Fishing/FisheryWaterSummaries/Summaries/Northeast/AkronPond_2011_MB.pdf * https://web.archive.org/web/20120227125024/http://wildlife.state.co.us/SiteCollectionDocuments/DOW/Fishing/FisheryWaterSummaries/Summaries/Southeast/MartinLake.pdf * http://wildlife.state.co.us/SiteCollectionDocuments/DOW/Fishing/FisheryWaterSummaries/Summaries/Northeast/JacksonReservoir_2011_MB.pdf * http://wildlife.state.co.us/SiteCollectionDocuments/DOW/Fishing/FisheryWaterSummaries/Summaries/Southeast/Pueblo2011.pdf * https://web.archive.org/web/20120824201959/http://wildlife.state.co.us/SiteCollectionDocuments/DOW/Fishing/FisheryWaterSummaries/Summaries/Northeast/ClearCreek.pdf * http://wildlife.state.co.us/SiteCollectionDocuments/DOW/Fishing/FisheryWaterSummaries/Summaries/Northeast/SouthDelaney10.pdf * http://wildlife.state.co.us/SiteCollectionDocuments/DOW/Fishing/FisheryWaterSummaries/Summaries/Southeast/Runyon2011.pdf * https://web.archive.org/web/20120329134649/http://wildlife.state.co.us/SiteCollectionDocuments/DOW/Fishing/FisheryWaterSummaries/Summaries/Northeast/PrewittReservoir_2011_MB.pdf {{Taxonbar, from=Q5196725 Oncorhynchus Fish hybrids