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

39
Table 10. Fecundity of razorback suckers from the Green River in
Dinosaur National Monument.
Location of Date of Total Weight Total no.
capture capture length (mm) (g) of eggs
Island Park 8-21-64 534 1524 72,476
Green River
Campground 9- 5-64 530 1437 41,119
IslandaPark 11- 1-64 529 .1317 24,490
-- -- 519 1560 69,460
-- -- 516 1380 37,665
Green River
Campground 9- 5-64 513 1570 30,854
Island Park 11- 1-64 505 1145 42,522
-- -- 485 1360 76,576
Echo Park 10-31-64 470 990 27,614
--
--------------- --
------------- 466
---------------- 1100
------------ 44,624
----------------
mean
standard deviation
506.7 1338.3 46,740
24.81 201.44 19,201.21
a A dash indicates that the date and location of capture were not
available.
Movement
Yampa River
During May 1975, ultrasonic transmitters were inserted into five
male razorback suckers in an attempt to track their movements and
determine spawning sites in the Yampa River. We were not able to
track the fish successfully with the transmitters due to problems
with the equipment. In addition, turbulence in the river reduced the
range of the transmitters when compared to data reported for lentic
areas [Personal communication, D. Brumbaugh, designer of the tags,
Tucson, Arizona]. Objects such as rocks or vegetation between the
receiver and the transmitter blocked the signal. In general, contact