scholarly journals Sand Creek characterization study for Oncorhynchus clarkii virginalis (Rio Grande Cutthroat Trout), Great Sand Dunes National Park and Preserve, Colorado

2019 ◽  
Author(s):  
Ben N. Mcgee ◽  
Andrew S. Todd ◽  
Kevin K. Terry
Keyword(s):  
National Park ◽  
Sand Dunes ◽  
Cutthroat Trout ◽  
Rio Grande ◽  
Oncorhynchus Clarkii ◽  
Characterization Study ◽  
Sand Creek

scholarly journals Hybridization of Snake River Cutthroat in the Lower Gros Ventre River

2006 ◽  
Vol 30 ◽  
pp. 110-113
Author(s):  
Ryan Kovach ◽  
Lisa Eby
Keyword(s):  
Exotic Species ◽  
National Park ◽  
Cutthroat Trout ◽  
Snake River ◽  
Oncorhynchus Clarki ◽  
Oncorhynchus Clarkii ◽  
Grand Teton National Park ◽  
Water Diversions ◽  
Yellowstone Cutthroat Trout ◽  
Special Concern

The cutthroat trout Oncorhynchus clarki is Wyoming's only native trout. The Yellowstone cutthroat trout (Oncorhynchus clarkii bouvieri) is designated as a "species of special concern" by a number of agencies and conservation groups. Although the Yellowstone cutthroat trout has recently avoided federal listing because of robust headwater populations (USFWS 2006), they face continued threats across their range. The fine-spotted Snake River native trout is a morphologically divergent ecotype of the Yellowstone subspecies, although it is not genetically distinguishable (Allendorf and Leary 1988, Novak et al. 2005). The Gros Ventre, an important tributary of the Snake River located partially in Grand Teton National Park, historically supported robust populations of fine­ spotted Snake River cutthroat trout. Principal threats to Gros Ventre native trout, especially in the lower end of the drainage within the park boundaries, include both water diversions (loss of water and fish into irrigation ditches) and presence of exotic species.

Status, Distribution, and Conservation of Native Freshwater Fishes of Western North America

2007 ◽  
Keyword(s):  
New Mexico ◽  
Cutthroat Trout ◽  
Rio Grande ◽  
National Forests ◽  
Santa Fe ◽  
Private Lands ◽  
Indian Reservation ◽  
Oncorhynchus Clarkii ◽  
Fort Apache Indian Reservation ◽  
Central Arizona

ABSTRACT Three native trouts occur in the southwestern United States. The Rio Grande cutthroat trout <em>Oncorhynchus clarkii virginalis</em> persists in New Mexico and southern Colorado on the Santa Fe, Carson, and Rio Grande national forests and private lands. The Gila trout <em>O. gilae</em> and the Apache trout <em>O. gilae apache</em> (also known as <em>O. apache</em>) occur in isolated headwater streams of the Gila and Little Colorado rivers on the Gila and Apache- Sitgreaves national forests and Fort Apache Indian Reservation in southwestern New Mexico and east-central Arizona, respectively. For more than two decades, intensive management has been directed at the Apache, Gila, and Rio Grande cutthroat trouts. Despite the efforts, their decades-long listed status remains unchanged for the Gila and Apache trouts, and the Rio Grande native is under consideration for listing. The objectives of this paper are to review the literature and management activities over the past quarter of a century in order to delineate why recovery and conservation have been so difficult for southwestern trout.

Population structure and genetic management of Rio Grande cutthroat trout (Oncorhynchus clarkii virginalis)

2008 ◽  
Vol 10 (5) ◽  
pp. 1209-1221 ◽  
Author(s):  
V. L. Pritchard ◽  
J. L. Metcalf ◽  
K. Jones ◽  
A. P. Martin ◽  
D. E. Cowley
Keyword(s):  
Population Structure ◽  
Cutthroat Trout ◽  
Rio Grande ◽  
Genetic Management ◽  
Oncorhynchus Clarkii

scholarly journals Evaluating the Movement Patterns of Snake River Finespotted Cutthroat Trout in the Snake River Below Jackson Lake Dam, Grand Teton National Park

2008 ◽  
Vol 31 ◽  
pp. 23-28
Author(s):  
Bob Gresswell ◽  
Kris Homel
Keyword(s):  
National Park ◽  
Radio Telemetry ◽  
Cutthroat Trout ◽  
Distribution Patterns ◽  
Large River ◽  
Spawning Migration ◽  
Snake River ◽  
Behavioral Variability ◽  
Oncorhynchus Clarkii ◽  
Grand Teton National Park

The Snake River finespotted cutthroat trout Oncorhynchus clarkii behnkei has been formally recognized as a subspecies of cutthroat trout Oncorhynchus clarkii, but it is more generally perceived as a morphologically divergent ecotype of the more broadly distributed Yellowstone cutthroat trout Oncorhynchus clarkii bouvieri. This large-river cutthroat trout has persisted in the Snake River downstream of Jackson Lake Dam through a century of flow regulation. Although there is a popular sport fishery focused on this native trout, spawning and distribution patterns throughout its range are poorly understood. Consequently, it is difficult to predict how future disturbances (e.g., climate change or an increase in the prevalence of nonnative species) may affect behavior or persistence. In 2008, radio telemetry techniques were used to identify spawning patterns of cutthroat trout. From August-October, 2007, 49 radio telemetry tags were implanted into cutthroat trout in the Snake River, Grand Teton National Park and fish movements were tracked during the spawning season. Significant temporal and spatial variability in spawning behavior was observed (n = 22 fish with distinct spawning migrations). The earliest spawning migration began at the end of April, and the last spawning migration was initiated in mid-July. Spawning was observed in the mainstem and side channels of the Snake River, several tributaries, and three major spring creek complexes. Although the majority of this spawning activity occurred within 40 km of the respective original tagging location, three fish migrated to spawning areas 75-100 river kilometers away. Ultimately, developing a comprehensive understanding of the behavioral variability of Snake River finespotted cutthroat trout and the habitat connectivity required to complete the life cycle will provide new insights into the management of this portion of the Snake River.

The genetic legacy of more than a century of stocking trout: a case study in Rocky Mountain National Park, Colorado, USA

2015 ◽  
Vol 72 (10) ◽  
pp. 1565-1574 ◽  
Author(s):  
Sierra M. Love Stowell ◽  
Christopher M. Kennedy ◽  
Stower C. Beals ◽  
Jessica L. Metcalf ◽  
Andrew P. Martin
Keyword(s):  
National Park ◽  
Molecular Genetic ◽  
Cutthroat Trout ◽  
Rocky Mountain ◽  
Rocky Mountain National Park ◽  
Oncorhynchus Clarkii ◽  
Continental Divide ◽  
Molecular Genetic Data ◽  
Northern Colorado

Human introductions can obscure the diversity and distribution of native biota; hybridization with and replacement by introduced congeners is a primary conservation threat, particularly in salmonids. Cutthroat trout (Oncorhynchus clarkii) are an important component of biodiversity in the American West, and all recognized subspecies are targets for state and federal conservation efforts. Rocky Mountain National Park (RMNP) in northern Colorado is a microcosm of trout introductions that happened worldwide. We used a combination of extensive stocking records and molecular genetic data to ask whether native trout populations persist despite stocking and whether patterns in the distribution of cutthroat trout clades could be explained by source and intensity of stocking. Nearly 15 million cutthroat trout were stocked into RMNP from a mosaic of sources in the 20th century. A single lineage of cutthroat trout was historically native to each side of the Continental Divide in RMNP, but we detected at least five divergent clades of cutthroat trout in 34 localities on both sides of the Divide. The distribution of lineages was predicted by stocking pressure and source but not by which lineage was historically native. The future of mixed and non-native cutthroat trout populations in RMNP poses a substantial conservation challenge.

scholarly journals Geophysical expression of buried range-front embayment structure: Great Sand Dunes National Park, Rio Grande rift, Colorado

Geosphere ◽  
2017 ◽  
Vol 13 (3) ◽  
pp. 974-990 ◽  
Author(s):  
Benjamin J. Drenth ◽  
V.J.S. Grauch ◽  
Chester A. Ruleman ◽  
Judith A. Schenk
Keyword(s):  
National Park ◽  
Sand Dunes ◽  
Rio Grande ◽  
Rio Grande Rift
Sign in / Sign up

Export Citation Format

Share Document