7125 ‎(2)‎

• UCREFRP Catalog Number: 7125
• Author: McAda, C. W.
• Title: Aspects of the Life History of Three Catostomids Native to the Upper Colorado River Basin.
• USFW Year: 1977.
• USFW - Doc Type: Utah State University,
• Copyright Material: YES

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LIST OF FIGURES
Figure Page
1. Native catostomids of the upper Colorado River basin:
razorback sucker, Xyrauchen texanus (top), flannel-
mouth sucker, Catostomus Zatipinnis (center) and
bluehead sucker, Catostomus discobo tus (bottom photo) 4
2. Location of sampling sites on the Colorado, Green
and Yampa Rivers, Utah-Colorado 7
3. Views of Echo Park (top photo) and Whirlpool Canyon
in the Green River below the confluence with the Yampa
River 8
4. Historical (all circles) and present (solid circles
only) distribution of the razorback sucker in the
Colorado River basin 17
5. Length-weight relationship for male (M) and female (F)
razorback suckers from the Walter Walker Wildlife Area,
Colorado River, 1974-75 29
6. Length-weight relationship for male (M) and female (F)
razorback suckers from the Green and Yampa Rivers,
1974-75 30
7. Location of gravel bars in the Yampa River used for
spawning by razorback and flannelmouth suckers,
1975-76 36
8. Gravel bar near the mouth of the Yampa River used for
spawning by razorback and flannel mouth suckers 36
9. Movement of razorback sucker "A" in the lower Yampa
River, as determined by tracking with ultrasonic
transmitters, May 1975 41
10. Movement of razorback sucker "B" in the lower Yampa
River, as determined by tracking with ultrasonic
transmitters, May 1975 42
11. Movement of razorback suckers "C" and "D" in the
lower Yampa River, as determined by tracking with
ultrasonic transmitters, May 1975 43