0000001753 00000 n 0000006064 00000 n 0000000875 00000 n SPECIES SUMMARY . 12-Month Finding on a Petition to List Rio Grande Cutthroat Trout . As a result of these changes, Rio Grande cutthroat trout populations are restricted primarily to headwater streams. This beautiful trout is considered a minor subspecies of the Yellowstone cutthroat and is native to the Rio Grande, Canadian and Pecos River drainages of New Mexico and Colorado. 0000030050 00000 n Rio Grande Cutthroat occupy just over 10% of their native range and are primarily confined to high elevation streams. The Rio Grande cutthroat trout is one of two native species of trout found in New Mexico (The other native New Mexico trout specie we have is the Gila Trout which is only found in southern part of the state). �w�9i�8d:�H�8�()� ��HK �6Xy0`E�0�1X90�0�03>`�����$ʠ������,FM�� �g�2L��b`y���A������"�D02�00H2�(0|f�m�p�A������3 ��c G7�-�1,9��,l�L^��L� �_� of Game and Fish, U.S. Cutthroat trout historic range via Western Trout. Contents. Rio Grande cutthroat have the distinction of being the southernmost subspecies of cutthroat trout. You can zoom in to Level 14, roughly 1:35,000 scale. This species is located in mountainous headwaters and small streams. Native to Colorado and New Mexico, the Rio Grande Cutthroat is the United States’ southernmost cutthroat subspecies. Historically, Rio Grande Cutthroat Trout occupied all cool waters in the Rio Grande drainage, including the Chama, Jemez and Rio San Jose drainages, along with suitable waters of the Pecos and Canadian drainages. This data set characterizes the thermal regime in a number of Colorado and New Mexico streams that contain populations of Rio Grande Cutthroat Trout (Oncorhynchus clarkii virginalis) or have been considered potential restoration areas for the fish. Rio Grande cutthroat trout. The native range of the Rio Grande Cutthroat suspiciously cuts off right at the Texas border. Native range: Northern New Mexico/Southern Colorado. In 1541, Francisco de Coronado recorded his first glimpses of cutthroat trout in the Pecos River near what is now Santa Fe, New Mexico. Rio Grande cutthroat trout have been replaced by nonnative trout throughout more than 90 perent of their historic range. Click on the Layers icon and select the cutthroat variants to view. Today the southernmost known populations are found on the eastern flank… Photos courtesy of Kevin Terry. Rio Grande cutthroat trout – a native subspecies of New Mexico – are as integral to the land’s history as its ecosystems. The Mexican reports have been all but dismissed, but Garrett and Matlock (1991) provided evidence indicating that Rio Grande cutthroat were likely native to Texas. The Rio Grande cutthroat trout (Oncorhynchus clarki virginalis), a member of the family Salmonidae, is found in northern New Mexico and southern Colorado in tributaries of the Rio Grande., [1] [2]. They have a yellowish green-gray to gray body with scattered black spots, and a densely spotted tail. Much of the trout’s natural habitat has been harmed by livestock overgrazing, recreational activities and vegetation limitations in the riparian areas of water sheds. The Rio Grande Cutthroat has officially been designated as the New Mexico State Fish. All documented US populations . Life history; Conservation status; References; External links; It is one of 14 subspecies of cutthroat trout native to the western United States, and is the state fish of New Mexico. An understanding of the upper thermal tolerance of Rio Grande Cutthroat Trout is important for developing water temperature standards and … 2.0 - 9/2009 . Abstract. 0000005285 00000 n 0000030399 00000 n 0000001576 00000 n This finding is available on the Internet at http://www.regulations.gov at Docket Number FWS-R2-ES-2014-0042. The Rio Grande cutthroat trout (RGCT) is native to the Rio Grande, and Pecos and Canadian rivers of Colorado and New Mexico. The photos below are Rio Grande Cutthroat Trout. 0000027522 00000 n Rio Grande cutthroat trout are a strand representing the southern end of the cutthroat species. 0000006799 00000 n subspecies have historically been introduced throughout the range of Rio Grande cutthroat trout for recreational angling, and they are known to readily hybridize with Rio Grande cutthroat trout. Like cutthroat trout in general, the Rio Grande cutthroat trout is now rare throughout its native range (Behnke, 1979; Sublette et al., 1990). Rio Grande Cutthroat Trout are native to the Rio Grande and Pecos River drainages of Colorado and New Mexico. xref Rio Grande Cutthroat Trout (Oncorhynchus clarkii virginalis; RGCT) is the southernmost occurring subspecies of Cutthroat Trout and is designated as New Mexico’s state fish.RGCT are brilliantly colored, with brass colored sides transitioning to green and bronze … READ MORE about New Mexico Game and Fish Department’s efforts to conserve Rio Grande Cutthroat Trout. Brook, Brown, Rainbow, Native Cutthroat Trout and Kokanee Salmon can all be found in these waters. The current range of the Rio Grande cutthroat trout, in red, is about 10% of its historic range, in blue. 0000003797 00000 n In Trout and Salmon of … Fish and Wildlife Service (Service) found that listing the Rio Grande cutthroat trout (Oncorhynchus clarkii virginalis) under the Endangered Species Act is not warranted at this time. Rio Grande Cutthroat Trout. Rio Grande Cutthroat Trout Range-wide Conservation Team . Adults grow up to 12-13 inches long. Ultimate USA Cutthroat Map. Photo credit: Frank Weisbarth. Rio Grande Cutthroat Trout (Oncorhynchus clarkii virginalis) is one of three recognized subspecies of native trout found in Colorado, and is the southernmost subspecies of cutthroat trout. Fish and Wildlife Service, U.S. Forest Service, Bureau of Land Management, the National Park Service, the Jicarilla-Apache Nation, the Mescalero-Apache Nation, and the Taos Pueblo tribe and conservation organizations such as the Western Native Trout Initiative and Trout Unlimited has collaborated to work on range-wide protection plans and completed numerous conservation projects for the species. 0000001374 00000 n The majority of these streams had no previous record of continual temperature records. Historically, the Rio Grande cutthroat trout (Oncorhynchus clarkii virginalis) occupied all cool waters in the Rio Grande drainage including the Chama, Jemez, and Rio San Jose drainages, along with suitable waters of the Pecos and Canadian drainages. h�b```b``y������� € "@16� @gg���En`1c�Y�ƠT���uO w��h�] Rio Grande cutthroat trout Greenback cutthroat trout: O. c. stomias (Cope, 1871) Native to the Arkansas and South Platte River headwaters on the eastern slopes of the Rocky Mountains in Colorado; it is designated as threatened (1978). ONCORHYNCHUS CLARKII VIRGINALIS . They are pursued in New Mexico and Colorado on the Rio Grande, Pecos, and Canadian Rivers, as well as in the Guadalupe and Davis Mountains of Texas. Stream-dwelling cutthroat trout generally inhabit mid to high-elevation streams … Rio Grande cutthroat trout, Oncorhynchus clarkii virginalis, can be found in high elevation streams and lakes of the Rio Grande, Canadian, and Pecos River drainages in Colorado and New Mexico, giving it the southern-most distribution of any form of Cutthroat Trout.It now only occupies just 12 percent of its historic habitat in approximately 800 miles of streams. READ the 2013 Rio Grande Cutthroat Trout Conservation Agreement, Download this brochure about Rio Grande Cutthroat Trout by clicking on the link below. 0000020748 00000 n U.S. However, the Service is asking the public to submit any new information that becomes available concerning the status of the Rio Grande cutthroat trout at any time. Projects have ranged from barrier construction/restoration to keep non-native trout out of conservation waters, habitat restoration, genetics analysis, and public outreach and education. They are also believed to be native to the Canadian Riverd-rainage of Colorado and New Mexico, but no early historic specimens or written accounts are available to verify this. *)i4�\W�c2 Status Review for Rio Grande Cutthroat Trout, 73 Fed. Here’s the release from Colorado Parks and wildlife:. 1016 0 obj <>stream trailer An updated conservation agreement and 10-year plan to protect the Rio Grande Cutthroat Trout was signed in 2013 with the goal of assuring the long-term viability of Rio Grande Cutthroat Trout throughout its historic range and setting a conservation strategy for the near future. h���A 0ð4`�z\Gcw��������z�C. The historic range of Rio Grande cutthroat trout has been reduced over the last 150 years due to many changes on the landscape, including: drought, water infrastructure, habitat changes, hydraulic changes, hybridization with rainbow trout and other species of cutthroat trout, and competition with brown trout and brook trout. 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