Propagated Fish in Resource Management

2004 ◽  
Keyword(s):  
Colorado River ◽  
Pimephales Promelas ◽  
Initial Study ◽  
Lepomis Cyanellus ◽  
Green River ◽  
Endangered Fish ◽  
Black Bullhead ◽  
Nonnative Fish ◽  
Floodplain Reconnection ◽  
Ictalurus Melas

<em>Abstract.</em>—Floodplains are presumed to be important rearing habitat for the endangered razorback sucker <em>Xyrauchen texanus</em>. In an effort to recover this endemic Colorado River basin species, the Upper Colorado River Endangered Fish Recovery Program developed a floodplain acquisition and enhancement program. A levee removal study was initiated in 1996 as one component of this floodplain restoration program. The goal of the Levee Removal Study was to evaluate the system responses to levee removal and make specific recommendations concerning the value of floodplain reconnection for endangered species (specifically razorback sucker) recovery. However, because there were very few razorback suckers in the Green River, answers to several important questions pertaining to razorback sucker utilization of the floodplain were not answered during this initial study. In an effort to answer some of these questions, age-1 and larval razorback suckers were stocked into depression floodplain wetland habitats along the Middle Green River in northeastern Utah. Age-1 razorback suckers were stocked during the spring of 1999 and 2000 into The Stirrup (river kilometer [Rkm] 444.0), Baeser Bend (Rkm 439.3), and Brennan (Rkm 432.0) wetland sites. Larval razorback suckers were stocked during the spring of 1999 into The Strirrup and into Baeser Bend during 2001. At the time of stocking, each floodplain site was occupied by numerous nonnative fish, including black bullhead catfish <em>Ictalurus melas</em>, fathead minnow <em>Pimephales promelas</em>, green sunfish <em>Lepomis cyanellus</em>, and common carp <em>Cyprinus carpio</em>. The goal of this study was to test if floodplain depressions will aid in the recovery of razorback suckers.

scholarly journals Survival of Some Freshwater Fishes in the Alkaline Eutrophic Waters of Nebraska

1971 ◽  
Vol 28 (11) ◽  
pp. 1811-1814 ◽  
Author(s):  
D. B. McCarraher
Keyword(s):  
Pimephales Promelas ◽  
Freshwater Fishes ◽  
Total Alkalinity ◽  
Lepomis Cyanellus ◽  
Black Bullhead ◽  
Alkaline Environments ◽  
Ictalurus Melas ◽  
Classification Index ◽  
Green Sunfish ◽  
Alkaline Waters

Of 14 species of freshwater fishes held in cages in one or more of 13 alkaline lakes and ponds in Nebraska, few species survived more than a month where carbonate alkalinity, mostly as compounds of Na2CO3 and KCO3, was above 300 mg/liter. Of the 14 species tested, Sacramento perch (Archoplites interruptus), fathead minnow (Pimephales promelas), northern pike (Esox lucius), and the black bullhead (Ictalurus melas), were the most tolerant of alkaline environments. Most centrachid fishes except A. interruptus and the green sunfish (Lepomis cyanellus), did not survive more than a month in alkaline waters greater than 950 mg/liter total alkalinity. A lake classification index for slightly alkaline to strongly alkaline environments is presented, along with suggested fish species for introduction into such waters.

Cutthroat Trout: Evolutionary Biology and Taxonomy

2018 ◽  
Keyword(s):  
Great Basin ◽  
Late Miocene ◽  
Colorado River ◽  
Cutthroat Trout ◽  
Snake River Plain ◽  
Fish Populations ◽  
Snake River ◽  
Green River ◽  
Bear River ◽  
River Plain

<em>Abstract</em>.—In the past 17 million years (myr), the topography and drainage systems of the northwestern United States were drastically modified by the Yellowstone–Snake River Plain (YSRP) hotspot and associated east–west extension of the Basin and Range Province. These geologic changes influenced distribution and diversification of Cutthroat Trout <em>Oncorhynchus clarkii</em> and allowed connections between Snake River, Colorado River, and Great Basin fish populations beginning in the late Miocene. Studies of detrital zircon grains in Miocene to Holocene fluvial sands of the Snake River document the eastward migration of the regional drainage divide from central Idaho to northwestern Wyoming. This migration was concomitant with the southwest migration of the North American tectonic plate over the YSRP hotspot. In the late Miocene and Pliocene, since 10 million years before present (Ma), the Chalk Hills and Glenns Ferry lake systems formed on the western Snake River Plain and were hosts to diverse fish fauna. The modern Snake River formed after 3 Ma with the cutting of Hells Canyon and integration of the Snake and Columbia River drainage. In the Great Basin south of the Snake River watershed, Lake Lahontan has a history that goes back to the Miocene. Connections between the western Snake River Plain and the Great Basin were recurrent over the past 10 myr. In southeastern Idaho, the Bear River has had a complex drainage interaction with the Snake River and Bonneville watersheds. Lake Bonneville, in northern Utah, grew during Pleistocene glacial climate regimes. The modern Bear River connection to Lake Bonneville was initiated about 50,000 years before the present. The integration of the Green River with the Colorado River occurred in the late Miocene, developing after breaking of Eocene connections between the Green River and streams draining to the Atlantic Ocean. In sum, geological constraints are compatible with patterns of fish fossils and genetic linkages and identify mechanisms of colonization and isolation of fish populations that have resulted in regional diversification of Cutthroat Trout.

Cutthroat Trout: Evolutionary Biology and Taxonomy

2018 ◽  
Keyword(s):  
River Basin ◽  
Evolutionary Biology ◽  
Colorado River ◽  
Cutthroat Trout ◽  
Green River ◽  
South Platte River ◽  
Continental Divide ◽  
San Juan River ◽  
Conservation Actions ◽  
Platte River Basin

<em>Abstract</em>.—Despite major declines in distribution and abundance of Cutthroat Trout <em>Oncorhynchus clarkii </em>across their native range since European settlement, substantial morphological and genetic diversity remains. For example, recent molecular investigations revealed the presence of six discrete lineages of Cutthroat Trout native to the Southern Rocky Mountains rather than four as previously thought. These include the previously recognized Yellowfin Cutthroat Trout <em>O. c. macdonaldi </em>(extinct) and Rio Grande Cutthroat Trout <em>O. c. virginalis</em>, as well as the true native of the South Platte River basin, located east of the Continental Divide, which we continue to refer to as Greenback Cutthroat Trout. Within the range of Colorado River Cutthroat Trout <em>O. c. pleuriticus</em>, which is located west of the Continental Divide, we highlight two divergent clades that historically occupied upstream, coldwater reaches of the Green River and Colorado River basins. Both are also found outside their historical ranges as well, due to extensive, mostly undocumented stocking in the early 20th century that served to conceal native diversity in the region. An additional clade closely aligned with those two Colorado River groups historically occupied the San Juan River basin. In this chapter, we discuss both molecular and morphomeristic evidence that indicates distinct lineages are aligned with major drainage basins, information that guides ongoing conservation actions.

Bioaccumulation of PCBs from Sediments by Oligochaetes and Fishes: Comparison of Laboratory and Field Studies

1992 ◽  
Vol 49 (10) ◽  
pp. 2080-2085 ◽  
Author(s):  
Gerald T. Ankley ◽  
Philip M. Cook ◽  
Anthony R. Carlson ◽  
Daniel J. Call ◽  
Julie A. Swenson ◽  
...  
Keyword(s):  
Pimephales Promelas ◽  
Field Studies ◽  
The Other ◽  
Fathead Minnows ◽  
Lumbriculus Variegatus ◽  
Tissue Concentrations ◽  
Test Species ◽  
Black Bullhead ◽  
Study Laboratory ◽  
Ameiurus Melas

Fathead minnows (Pimephales promelas) and oligochaetes (Lumbriculus variegatus) were exposed in the laboratory to sediment samples from the lower Fox River/Green Bay, and their bioaccumulation of PCBs was compared with PCB concentrations in synoptic collections of fish (black bullhead, Ameiurus melas) and oligochaetes (primarily Limnodrilus sp.) from the field. Total PCBs and PCB homologues (expressed as lipid-normalized tissue concentrations/organic carbon-normalized sediment concentrations) were qualitatively and quantitatively similar in the laboratory-exposed and field-collected oligochaetes. PCB concentrations in A. melas generally were greater than in any of the other test species, due possibly to differences in exposure (e.g. biomagnification) compared with the other organisms. PCB concentrations in P. promelas were consistently smaller than in any of the other species investigated. These results indicate that, under the exposure regime used in this study, laboratory tests with L. variegatus can provide a reasonable quantitative estimate of the bioaccumulation of PCBs in field populations of oligochaetes. However, the use of P. promelas in laboratory sediment tests may result in significant underprediction of the exposure of indigenous benthic invertebrates and fishes to bioaccumulable contaminants.

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