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Last modified
7/14/2009 5:02:35 PM
Creation date
5/22/2009 4:46:54 PM
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UCREFRP
UCREFRP Catalog Number
9449
Author
Hawkins, J. A.
Title
Recapture and growth rates of three Colorado River endangered fish species
USFW Year
2003.
USFW - Doc Type
a comparison between electrofishing and non-electrofishing.
Copyright Material
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Table 2- Rate of recapture of Upper Colorado River Basin endangered fishes after initial capture by electrofishing or <br />non-electrofishing gears. X 2 denotes the chi-square statistic for recapture rates of the two sampling gears and P denotes <br />the significance of the test that the recapture rates are similar between sampling gears. <br />Sampling gear at Number of Number of Recapture <br />initial capture fish tagged fish recaptured rate (%) X 2 P <br />Colorado pikeminnow <br />electrofishing <br />non-electrofishing <br />electrofishing <br />non-electrofishing <br />electrofishing <br />non-electrofishing <br />3,448 617 17.9 4.086 0.04 <br />1,526 310 20.3 <br /> humpback chub <br />1,972 115 5.8 1.051 0.31 <br />526 37 7.0 <br /> razorback sucker <br />489 113 23.1 0.379 0.54 <br />108 22 20.4 <br />15 <br />
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