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Last modified
7/14/2009 5:02:29 PM
Creation date
5/20/2009 3:40:27 PM
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UCREFRP
UCREFRP Catalog Number
7256
Author
Radant, R. D., et al.
Title
Colorado Squawfish Investigations - White River, Utah.
USFW Year
1983.
USFW - Doc Type
Salt Lake City, Utah.
Copyright Material
NO
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<br />. <br /> <br />. <br /> <br />RESULTS AND DISCUSSION <br /> <br />. <br /> <br />'Radiotelemetry of Adult Colorado Squawfish <br />Radiotelemetry studies by Miller et ale (1982b) provides the first <br />documentation of Colorado squawfish movement in the White River. A <br />Colorado squawfish radio tagged in the Green River 2 mi below the mouth <br />of the White River in April 1980, later ascended the White River to RM 34 <br />where it displayed apparent spawning behavior on 16 July. <br />In 1981 FWS personnel implanted nine Colorado squawfish in the White <br />River. Contact with seven of these fish was lost in less than one <br />month. The other two fish were monitored for up to five months. One <br />Colorado squawfish 450 mm TL moved slowly 54 mi (86.9 km) downstream <br />between April and September. The other Colorado squawfish 550 mm TL, <br />moved out of the White River to Gray Canyon in the Green River, then back <br />to RM 50 of the White River, traveling 382 mi (614.8 km) during the five <br />month period (Miller et al. 1982a). Miller et ale (1982a) postulated <br />that differing sexual maturity accounted for the divergent movement <br />recorded for the two telemetered fish. <br />Radiotelemetry studies were performed on the White River in 1982 to <br />add to the existing data base. Eight Colorado squawfish were implanted <br />with radio transmitters between 25 May and 2 July 1982 and their subse- <br />quent movement monitored (Table 1). The largest fish implanted with a <br />transmitter was 711 mm long and the smallest 453 mm. Seven of the <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />10 <br /> <br />. <br />
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