Razorback sucker. IV.A.1.a. Develop experimental augmentation plan and seek Program acceptance. FWS-FR Complete Xxxxxxxx et al. 1995. IV.A.1.b. Implement experimental augmentation plan.
Razorback sucker. IV.A.1.a. Develop experimental augmentation plan and seek Program acceptance. FWS-FR Complete Xxxxxxx et al 1995. IV.A.1.b. Implement experimental augmentation plan. (Goal: 10 adults/river mile.)
Razorback sucker. GENERAL RECOVERY PROGRAM SUPPORT ACTION PLAN Assmt: Stocking Page 1 Fish produced and stocked by facility in 2009 Facility Species Target Stocked Percent Grand Valley Razorback sucker 14,895 17,975 121% Ouray Razorback sucker 14,895 18,873 127% Wahweap Bonytail 10,660 9,639 90% Xxxxx Bonytail 5,330 6,196 116% Razorback sucker stocked by River Facility River Taget Stocked Percent Grand Valley Upper Colorado 6,620 13,914 210% Gunnison 3,310 4,061 123% Lower Green 4,965 0 0% (Fish stocked into Upper Colorado, instead) Ouray Middle Greem 9,930 13,256 133% Lower Green 4,965 5,017 101% Bonytail stocked by River Facility River Taget Stocked Percent Wahweap Middle Greem 2,665 2,696 101% Lower Green 5,330 5,347 100% Colorado 2,665 1,596 60% Ouray Middle Greem 2,665 2,707 102% Colorado 2,665 3,489 131% ACTIVITY WHO STATUS FY 10 10/09-9/10 FY 11 10/10-9/11 FY 12 10/11-9/12 FY 13 10/12-9/13 FY 14 10/13-9/14 OUT- YEARS Assessment of significant accomplishments (!) and shortcomings (X), (Focused on February 1, 2009 - January 31, 2010) I. PROVIDE AND PROTECT INSTREAM FLOWS (HABITAT MANAGEMENT) I.A. Green River above Duchesne River I.A.1. Initially identify year-round flows needed for recovery while providing experimental flows. I.A.1.a. Summer/fall. FWS-ES Complete USFWS 1992. I.A.1.b. Winter/spring. FWS-ES Complete Xxxx, et al. 2000. I.A.1.c. Review summer/fall flow recommendation. FWS-ES Complete I.A.2. State acceptance of initial flow recommendations. I.A.2.a. Summer/Fall. UT Complete USFWS 1992 and revised in Xxxx et al. 2000. I.A.2.b. Winter/Spring. I.A.2.b.(1) Review scientific basis. UT Complete Xxxx et al. 2000. I.A.2.b.(2) Assess legal and physical availability of water. UT Complete I.A.3. Deliver identified flows. >* I.A.3.a. Operate Flaming Gorge pursuant to the 1992 Biological Opinion to provide summer and fall flows. BR Complete
Razorback sucker. GREEN RIVER ACTION PLAN: MAINSTEM 27 ACTIVITY WHO STATUS FY 04 10/03-9/04 FY 05 10/04-9/05 FY 06 10/05-9/06 FY 07 10/06-9/07 FY 08 10/07-9/08 FY 09 10/08-9/09 OUT- YEARS I. PROVIDE AND PROTECT INSTREAM FLOWS (HABITAT MANAGEMENT) I.A. Green River above Duchesne River (Utah only; flows not threatened in Colorado because river is entirely within a National Wildlife Refuge and National Monument.) I.A.1. Initially identify year-round flows needed for recovery while providing experimental flows. I.A.1.a. Summer/fall. FWS-ES Complete USFWS 1992. I.A.1.b. Winter/spring. FWS-ES Complete Xxxx, et al. 2000. I.A.1.c. Review summer/fall flow recommendation. FWS-ES Complete I.A.2. State acceptance of initial flow recommendations. I.A.2.a. Summer/Fall. UT Complete USFWS 1992 and revised in Muth et al. 2000. I.A.2.b. Winter/Spring. I.A.2.b.(1) Review scientific basis. UT Complete Xxxx et al. 2000. I.A.2.b.(2) Assess legal and physical availability of water. UT X I.A.3. Deliver identified flows. >* I.A.3.a. Operate Flaming Gorge pursuant to the 1992 Biological Opinion to provide summer and fall flows. BR Begin 93, ongoing X
Razorback sucker. IV.A.4.a. (2) Upper Colorado River IV.A.4.b. Bonytail IV.B. Conduct annual fish propagation activities
Razorback sucker. IV.A.4.a.(1) Middle Green FWS-FR Ongoing X X X X X X X Maintain genetic refugia for each of the species. Broodstock are currently maintained and in active use at Ouray National Fish Hatchery - Randlett. IV.A.4.a.(2) Upper Colorado River. FWS-FR Ongoing X X X X X X X Maintain genetic refugia for each of the species. Broodstock are currently maintained and in active use at Horsethief Canyon Native Fish Facility. IV.A.4.b. Bonytail UDWR/CPW Ongoing X X X X X X X Maintain genetic refugia for each of the species. Bonytail broodstock are currently maintained and in active use at Southwest Native Aquatic Resources and Recovery Center (Southwest Native ARRC). IV.A.4.c. Humpback chub. A draft report on the genetics of Gila spp. (Xxxx, in prep), including humpback chub, indicates historical hybridization (not anthropogenic) occurred between humpback chub and roundtail chub in Black Rocks. The authors identified two management units in the upper basin: Deso-Cataract and Black Rocks- Westwater. Authors did not recommend separate broodstocks, rather both management units be represented in a single Upper Basin broodstock. Report will be finalized upon inclusion of Westwater samples. IV.A.4.c.(1) Black Rocks Canyon. FWS-FR Ongoing X X X X X X X Maintain genetic refugia for each of the species. Ten adult humpback chub from Black Rocks were brought into captivity. A total of 28 adult HBC from Black Rocks are being held at Horsethief Canyon Native Fish Facility. See IV.A.4.c. IV.A.4.c.(2) Westwater Canyon. UDWR Ongoing X X X X X X X Maintain genetic refugia for each of the species. IV.A.4.c.(3) Cataract Canyon. (Broodstock currently represented by wild fish in the river.) UDWR Ongoing X X X X X X IV.A.4.c.(4) Yampa Canyon. (Broodstock had been considered represented by wild fish in the river; however, population appears to have declined and Recovery Program was unable to establish a refuge stock.) FWS-FR Dropped IV.A.4.c.(5) Desolation/Gray Canyons. (Broodstock currently represented by wild fish in the river; however, population appears to have declined and Recovery Program is establishing a refuge stock.) UDWR Ongoing X X X X X X X Maintain genetic refugia for each of the species. 25 humpback chub from Desolation Canyon were brought into Ouray NFH in 2009. Eleven remain at Ouray NFH-Randlett. Program may consider bringing in additional fish in future years. See IV.A.4.c. IV.A.4.d. Colorado pikeminnow. IV.A.4.d.(1) Upper Colorado River Basin (Broodstock currently represente...
Razorback sucker. >* I.A.3.a. Operate Flaming Gorge pursuant to the 1992 Biological Opinion to provide summer and fall flows. BR Complete
Razorback sucker. The razorback sucker is a large-bodied, long-lived catostomid sucker endemic to the Xxxxxxxx Xxxxx Xxxxx xx xxx xxxxxxxxxxxx Xxxxxx Xxxxxx, including the mainstem Colorado River and major tributaries. Adult razorback suckers are characterized by the presence of a distinct dorsal bony keel and thickened, foreshortened caudal rays thought to be adaptations to historic flow and current conditions in Colorado River mainstem and tributary habitats. Adult fish can reach 1 meter (m) in length and a weight of up to 6 kilograms (kg) although lengths of 400-740 millimeters (mm) are typical. The razorback sucker was historically common and widely distributed from Mexico to major lower and upper Colorado River basin tributaries including the Gila and Salt rivers in Arizona and the Green, Yampa and San Xxxx xxxxxx in Utah, Colorado, Wyoming and New Mexico. Lower Colorado River basin populations exhibited significant declines in numbers and distribution beginning in 1935 with the creation of Lake Xxxx, and subsequently, other mainstem Colorado River reservoirs. Declines in upper basin adult fish captures have accelerated in the last 20 years indicating an ongoing loss of upper basin populations in most known habitats (USFWS 1998). An absence of recruitment, related to both habitat alterations and the increased presence of introduced fish species, is assumed to be the primary cause of population declines on a range wide basis but the great longevity of adult fish (<40 years, XxXxxxxx and Xxxxxxxx 1987) has allowed the retention of old-aged, reproducing adult stocks and provides the opportunity for collection of wild larvae which can be successfully reared in off-river, predator free habitats and facilities. Bonytail: The bonytail is a large cyprinid fish endemic to the Colorado River Basin (Xxxxxx and Xxxxxxx 1982). Closely related to the roundtail chub (Gila robusta) and other endemic Gila species, it demonstrates unique morphological adaptations presumably related to flow regimes of the historic Colorado River mainstem and tributaries. The bonytail typically reaches 350mm total length (TL) although large adults in lower basin habitats can reach a length of 600mm. Adult fish are characterized by a small head and an elongated, laterally compressed body with a long, thin caudal peduncle. The bonytail was historically widespread throughout the Colorado River mainstem and tributaries from the mouth of the Colorado River at the Gulf of California to Grand Junction in Colorad...
Razorback sucker. In the lower Colorado River basin, the current distribution of razorback sucker is limited to altered mainstem habitats and reservoirs in four known locations. A relict population exists in Lake Xxxx of <200 adult fish which has demonstrated very limited recruitment in the wild. In Lake Mohave a population estimated at <20,000 adult fish is composed of both aged wild fish and additional young adult fish released into the reservoir since 1994, which were hatchery reared individuals from larvae collected in the wild. A population of unknown size exists in Lake Havasu and upstream to below Xxxxx Dam from reared sub-adult fish released into that reservoir. An unknown number of adult razorback sucker persist in the Colorado River above Imperial Dam from recent releases for research purposes. With the exception of Lake Xxxx, none of these populations have conclusively demonstrated natural recruitment. In the upper Colorado River basin above Xxxx Canyon Dam, Arizona, there are small reproducing populations in the Green River, Utah, as well as small numbers of wild individuals in the upper Colorado River and San Xxxx River sub-basins. The fish in all upper basin populations are aged, with senescent adults and little or no recruitment, except for the middle Green River (USFWS 2000b). Hatchery-reared juvenile and adult fish are currently being stocked into selected riverine habitats in the upper basin with some recent evidence of success. Although naturally recruited razorback suckers are thought to be extirpated from the Gunnison River and this population consists of only a few hatchery-reared adults (USFWS 2000b), analysis of larval fish collected from the Gunnison River in spring 2002 indicated the presence of razorback sucker larvae in the sample, suggesting successful reproduction in the wild by hatchery-reared adults released into mainstem upper basin habitats (USFWS 2002a). Bonytail: In the lower Colorado River bonytail are limited in distribution to a small number of sub-adult and adult fish in Lake Mohave and Lake Havasu. The majority of these fish represent recent releases of juvenile and adult fish produced from parent stock held at Dexter National Fish Hatchery (NFH), New Mexico, and the rate of survival for those recently released fish is unknown. The total number of free-ranging bonytail in the lower basin is unclear and it is unknown if any wild naturally recruited fish still exist in lower basin riverine habitats. Bonytail in off-stream refugium pond...
Razorback sucker. GENERAL RECOVERY PROGRAM SUPPORT ACTION PLAN Assmt: Hydrology Page 1 Please scroll down and to the right to see all graphs and the table on this tab. Upper Colorado River Flow Targets in 2012 Aug 1 - Sep 30 Target 2012 Avr Difference Aug-Sep Min Annual Min Duchesne 50 43 -7 20 13 Green R. @ G. R. 1300 1342 42 1200 1160 Gunnison 750 1047 297 847 847 Xxxxxx 1300 1387 87 1220 1220 Maybell 93 79 -14 45 38 Palisade 810 414 -396 273 273 Price 53 36 -17 9.2 5 Stateline 1800 2604 804 2310 2150 Xxxxx (draft) 300 176 -124 115 37 Keep Last modified: 2/7/2013 6:48:48 PM Fish produced and stocked by facility in 2012 Total Numbers of Fish Stocked in the Upper Colorado River Basin Since 1995 Facility Species Target Stocked Percent Razorback Sucker Stocking in the Upper Colorado River Basin Colorado and Gunnison Rivers Middle Green River Lower Green River Grand Valley Razorback sucker 14,895 15,722 106% Year Stocking Goal # Stocked % Target # Stocked % Target # Stocked % Target Ouray Razorback sucker 14,895 16,168 109% 1995 Upper Colorado River experimental stocking plan (13,100 in various size ranges) 316 2.4% Wahweap Bonytail 10,660 5,427 51% 1996 13,100 in various size ranges 1,112 8.5% Xxxxx Bonytail 5,330 5,551 104% 1997 13,100 in various size ranges 2,926 22.3% 1998 26,200 in various size ranges 606 2.3% 387 No Plan Razorback sucker stocked by river 1999 58,600 in various size ranges 6,155 10.5% 1,357 No Plan Facility River Target Stocked Percent 2000 104,800 in various size ranges 29,826 28.5% 224 No Plan Grand Valley Upper Colorado 6,620 6,951 105% 2001 104,800 in various size ranges 6,199 5.9% Gunnison 3,310 3,555 107% 2002 State Stocking Plans (CO = 16,440 300+ mm; UT = 18,500 >300 mm) 11,374 69.2% 274 1.5% Lower Green 4,965 5,216 105% 2003 Integrated Stocking Plan (9,930 per reach) 5,541 55.8% 8,446 85.1% 2,377 23.9% Ouray Middle Green 9,930 11,191 113% 2004 Integrated Stocking Plan (9,930 per reach) 6,153 62.0% 9,619 96.9% 5,957 60.0% Lower Green 4,965 4,977 100% 2005 Integrated Stocking Plan (9,930 per reach) 10,284 103.6% 4,850 48.8% 4,231 42.6% 2006 Integrated Stocking Plan (9,930 per reach) 10,726 108.0% 5,021 50.6% 15,188 153.0% Bonytail stocked by river 2007 Integrated Stocking Plan (9,930 per reach) 10,064 101.3% 7,749 78.0% 8,549 86.1% Facility River Target Stocked Percent 2008 Integrated Stocking Plan (9,930 per reach) 12,949 130.4% 11,677 117.6% 10,161 102.3% Wahweap Middle Green* 2,665 0 0% 2009 Integrated Stocking Plan (9,930 per reach) 17,975 181....
