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<br />VANICEK AND KRAMER-SQUAWFISH AND CHUll LIFE HISTORY
<br />
<br /> I 1964 (
<br />~:~ ,--- JUNE 13-17
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<br />g SOr I JULY 16-Z0
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<br />TOTAL BODY lENGTH - MM
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<br />SEPT IZ-IS
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<br />I J
<br />
<br />100
<br />
<br />OCT 31
<br />n
<br />125 -;So
<br />
<br /> 1965
<br /> APR II
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<br /> MAY 16
<br /> n
<br />, - . , , --'
<br />I n JUNE 7-8
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<br /> JULY 17 -18
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<br /> AUG 1- 7
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<br />AUG 19 -Z4
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<br />
<br />SEPT 5
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<br />5'0
<br />
<br />SEPT 8 -IZ
<br />I l[
<br />75 -lOo~--,56
<br />
<br />1966
<br />
<br />IT
<br />
<br />APR Z9
<br />
<br />~--'
<br />
<br />JUNE 10
<br />n
<br />- -..I
<br />
<br />JULY 7
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<br />_____-....1-__....J
<br />
<br />I
<br />
<br />AUG 3 - 4
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<br />~
<br />
<br />AUG 7-8
<br />
<br />FIGlill[ 4,-Length-frcl)ucncics of youn;: Colorado
<br />sl)uawfish, Green River, 1%4, 1%:;' and 1%6,
<br />
<br />199
<br />
<br />.coor"
<br />I
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<br />300r-
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<br />III
<br />
<br />20 40 60 80 100
<br />ANTERIOR SCALE: RADIUS - MM (X68)
<br />
<br />
<br />FIGURf: 5.-Ilody-scale relationship of Colorado
<br />
<br />chub (G, r, elegans-lriangles; G, r, robus/a-open
<br />
<br />circles; undifferentiated.closed circles), Green River,
<br />
<br />Colorado chub had different body-scale re-
<br />lationships and were treated separately. Fish
<br />shorter than 200 mm total length were not
<br />identified to subspccies and were used in the
<br />growth analyses for both subspecies, The
<br />roundtail body-scale relationship appeared
<br />10 be linear (Figure 5) ann was described
<br />by a linc,1I" regression line filled by least
<br />squares:
<br />
<br />L = lO.5 + 4.12 S
<br />
<br />I
<br />
<br />where L = total hody Il'ngth in millimeters,
<br />awl S = anterior scale radiw; in millimeters
<br />x68. Lengths at various annuli were back-
<br />calculated on a standard numograph (Car-
<br />lander and Smith. EqJ.) , The body.scale re-
<br />lationship fur the bunylaiL l10wever, was
<br />non-linear and was descrilJed by three straight
<br />lines (Figure 5). The l(Jwcr and upper seg-
<br />ments were described by two linear regres-
<br />sions and the middle segment was fitted by
<br />eye since data for only one fish was avail.
<br />able in this size range, ^ special nomograph
<br />was constructed to fit the S.shaped curve
<br />
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