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Last modified
7/14/2009 5:02:37 PM
Creation date
5/17/2009 10:59:48 PM
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UCREFRP
UCREFRP Catalog Number
9683
Author
Valdez, R. A.
Title
a Survey of Fish Collections in the White River, Utah.
USFW Year
1984.
USFW - Doc Type
Logan, UT.
Copyright Material
NO
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<br />11 <br /> <br />1'-',-,:, <br />" <br /> <br /> <br /> <br /> <br />I) <br />I' <br />I' <br />I <br />I' <br />I <br />I: <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I. <br />I <br />I; <br /> <br />7 <br /> <br />(Table 1). The species varied from 49.2 to 62.5 % of the catch. The ERI <br />(1981) study found speckled dace (43%) were the most abundant followed by <br />red shiner (32%). Generally, red shiner, speckled dace, flannelmouth <br />suckers, roundtail chub and bluehead suckers were the most abundant fish <br />species caught, together ranging in composition from 91.1 to 97.0%. Fathead <br />minnows were the sixth most abundant fish species, followed by channel <br />catfish and common carp. The remaining nine species occurred less <br />frequently, including the endangered Colorado squawfish. <br />Of the 17 species reported in the White River, Utah, six were evolved <br />in the river system and are classified as either native (also occur <br />naturally in other river basins) or endemic (unique to the Colorado River <br />basin). The remaining eleven species were introduced and are classified as <br />nonnative (from other basins in North America) or exotic (from basins <br />outside of North America). Appropriate designations are provided in Table <br />1. <br /> <br />Of the five most abundant species, only one (red shiner) was <br />introduced. The other four (speckled dace, flannelmouth sucker, roundtail <br />chub and bluehead sucker) are either native or endemic. The predominance of <br />native or endemic fishes suggests that the White River has apparently not <br />undergone significant habitat changes to enhance populations of introduced <br />species at the expense of the native and endemic species. <br />The site-specific composition and longitudinal distribution of fishes <br />in the White River is depicted in Figure 2. By using percentage of catch <br />from selected fish sample sites of three investigative groups (CrOSby 1975a, <br />
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