7760

• UCREFRP Catalog Number: 7760
• Author: Beyers, D. W., R. T. Muth and M. S. Farmer.
• Title: Experimental Evidence of Competition Between Larvae of Colorado Squawfish and Fathead Minnow.
• USFW Year: 1994.
• USFW - Doc Type: \
• Copyright Material: NO

Table 1. Summary of the statistic d, competitive ability, and diet overlap
for larvae of Colorado squawfish and fathead minnow in 15 experimental
treatments (N=3).
Treatment da
Relative Feeding Colorado Fathead Competitive Diet
Abundanceb Regime` squawfish Minnow Ability Overlap
0:100 32 NA 0.0367 NA 0.95
25:75 32 1.99 0.825 0.106 0.69
50:50 32 -0.179* 1.21 -0.0834 0.66
75:25 32 -0.326* 2.55 -0.168 0.88
100:0 32 -0.0333 NA NA 0.95
0:100 80 NA 0.0274 NA 0.99
25:75 80 -2.15* 1.43 -0.137 0.95
50:50 80 -0.669 1.35 -0.0864 0.98
75:25 80 -0.396 -0.467 -0.0336 0.70
100:0 80 0.211 NA NA 0.99
0:100 200 NA 0.0496 NA 0.92
25:75 200 -8.41` -1.54 -0.112 0.87
50:50 200 -0.644 -4.69 0.0447 0.91
75:25 200 -0.389 -36.1' -0.0767 0.92
100:0 200 -0.200 NA NA 0.92
ad = relative growth in single-species assemblage - relative growth in
mixed-species assemblage.
~'/o Colorado squawfish:% fathead minnow.
~Zoopl ankton • f i sh-~ • day- .
NA = not applicable, treatment was a single-species assemblage.
'Significantly different by t-test, alpha = .05.
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