| 词条 | Cutbow |
| 释义 |
| name = Cutbow | image = CutbowGardnerRiverYNP.jpg | genus = Oncorhynchus | species1 = mykiss | link1 = Rainbow trout | species2 = clarkii | link2 = Cutthroat trout }} 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--coastal rainbow trout (O. mykiss irideus) and coastal cutthroat trout (O. clarkii clarkii) and Columbia River redband trout (O. mykiss gardineri) and westslope cutthroat trout (O. clarkii lewisi).[1] However, 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 at risk due to genetic pollution.[2] AboutIn the 1880s, rainbow trout were stocked in a number of different waters that 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 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.[3] Cutbows spawn during spring and prefer temperatures between 40 and 50°F. They are able to reproduce in natural habitats and in hatcheries.[3] They are almost immune to whirling disease, which affects most trout in Colorado.[3] References1. ^{{cite book |last=Behnke |first=Robert J. |others=Tomelleri, Joseph R. (illustrator) |title=Trout and Salmon of North America |publisher=The Free Press|location=New York |isbn=0-7432-2220-2 |year=2002 |pages=77, 140, 151, 152, 154|chapter=Rainbow and Redband Trout }} 2. ^Cutbow{{dead link|date=August 2017 |bot=InternetArchiveBot |fix-attempted=yes }}, ECOS Guide to the Ecology of the Northern Rockies 3. ^1 2 {{cite web|title=ColoradoCasters: Let's get to know..."The Cutbow"|url=http://coloradocastersblog.blogspot.com/2010/01/lets-get-to-knowthe-cutbow-how-cool-are.html|publisher=Colorado Caster Blog|accessdate=5 May 2013}} External links
2 : Oncorhynchus|Fish hybrids |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。