9683

• 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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11

Flannelmouth suckers exhibit nearly the same longitudinal pattern as
speckled dace. The species was uncommon in the downstream reaches but
became more common in an upstream direction. Crosby (1975a) reported this
species ranging in composition from 2% at the Mt. Fuel Bridge to 32% at
Asphalt Wash and 48% at Hell's Hole Canyon. Lanigan and Berry (1979),
however, reported that flannelmouths composed only 3% and 0% of the catch at
the Mt. Fuel Bridge and Asphalt Wash, respectively. At Hell's Hole Canyon,
flannelmouths made up only 7% of the catch. The ERI (1982) data also showed
an upstream longitudinal increase in the species; 8% at both Ouray Bridge
and Mt. Fuel Bridge and 22% at the Utah-Colorado border (RM 70).
No discernible longitudinal patterns were seen in the bluehead sucker
and the roundtail chub. Crosby (1975a) found bluehead suckers more abundant
(16%) in the Asphalt Wash area than in any other site, while Lanigan and
Berry (1979) found them at low levels at the Mt. Fuel Bridge (3%) and at
Hell's Hole Canyon (1%) but absent at Asphalt Wash. ERI (1982) studies
revealed low numbers of bluehead suckers at Ouray Bridge, Mt. Fuel Bridge
and the Utah-Colorado border (4, 7 and 3%, respectively).
The roundtail chub was found at only one site by Crosby (1975a), but
Lanigan and Berry (1979) found the species common at the Mt. Fuel Bridge
(14%) and at Hell's Hole Canyon (18%). ERI (1982) demonstrated a trend
toward greater numbers of the species in an upstream direction froln OUr6j
Bridge (2%) to Mt. Fuel Bridge (3%) to the Utah-Colorado border (24%).
Two trend modes are discernible in fishes of the White River, Utah;
temporal trends and spatial or longitudinal trends. The temporal trends