7145

• UCREFRP Catalog Number: 7145
• Author: Inslee, T. D.
• Title: Spawning of Razorback Suckers
• USFW Year: 1981.
• Copyright Material: NO

T?ble 3. Correlation coefficients (r) of fish densities (no. fish per 100
m ) in backwaters during fall and yearly peak flow for two Grand Valley
river reaches. Data collected in 1986, 1987, 1988 and 1989. Means of log-
transformed data were used for species maturing within their first year of
life and geometric means for late-maturing species.

Species 15-Mile
r Reach
P 18-Mile
r Reach
P
Native Species
Colorado Squawfishi 0.000 (-) 0.974 (.026)**
Roundtail chubs 0.886 (.114) 0.664 (.336)
Bluehead suckerl 0.920 (.080)* 0.876 (.124)
Speckled dacee 0.821 (.179) 0.930 (.070)*
Flannelmouth suckerl 0.663 (.367) 0.749 (.251)
Introduced Species
White suckerl -0.557 (.443)ns -0.762 (.238)
Common Carpi -0.618 (.382) 0.043 (.957)ns
Green sunfishl -0.346 (.654)ns 0.237 (.763)ns
Mosquitofishe -0.828 (.172) -0.871 (.129)
Fathead minnowe -0.226 (.774)ns -0.878 (.122)
Sand shinere -0.585 (.415) -0.822 (.178)
Red shinere -0.434 (.566)ns -0.938 (.062)*
Plains kilifishe -0.606 (.394) -0.676 (.324)
Brassy minnows 0.908 (.092) 0.000 (-)
Channel catfishs 0.000 (-) -0.584 (.416)
Black bullheads -0.687 (:313) 0.861 (.139)
Largemouth bassi -0.068 (.937)ns 0.178 (.822)ns
Bluegilli 0.000 (-) -0.335 (.665)ns
ns not significant (P > .5) e early-maturing
* (P < .10) 1 late maturing
** (P < .05)
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