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<br />375
<br />
<br />V1\NICEK ANIl KHAl\IEl{ S(JlJAWFISIl ANIl CHUB LIFE IIISTOHY
<br />
<br />~
<br />~
<br />
<br />
<br />350
<br />
<br />300
<br />
<br />,-
<br />/'
<br />'"
<br />/'
<br />,
<br />,
<br />,
<br />,
<br />,
<br />,
<br />,
<br />,
<br />,
<br />,
<br />,
<br />,
<br />,
<br />,
<br />,~~ ~ ROIUS7A
<br />I
<br />,
<br />I
<br />I
<br />I
<br />I
<br />I
<br />I
<br />
<br />!!.,~
<br />
<br />250
<br />
<br />200
<br />r
<br />~
<br />
<br />~'''I
<br />
<br />~ .0J
<br />
<br />50
<br />
<br />---
<br />
<br />___-L-__..l._-.l
<br />1 Ir m nr
<br />AGE
<br />
<br />,
<br />Z
<br />
<br />,
<br />:n
<br />
<br />Fn;I'HE 6,-(;rowlh in lola] Icngth and lenglh in.
<br />lTl'mcnl" of Colorado ..hull (C, f, e/egallS and C, f,
<br />m/Jlls/a), en'l'n Hi\'cL
<br />
<br />Colorado Chub
<br />
<br />Length-weight regressions were calculated
<br />.-eparalely for Ihe two forms of Colorado
<br />chub, the roundtail (G, T. Tabusta) and the
<br />llOnytail I,G. T, elegalls) since these forms
<br />were morphologically distinct (Figure 8).
<br />Fish shorter than 200 mm total lellgth were
<br />II.-cd ill holh rq~ressions oecallse they could
<br />not oe separated illto the two subspecies. The
<br />linear regressions were filled by least squares:
<br />roundtail: log W = -5.2.1.62 + 3,036 log L
<br />bonylail: log W = ---4,7899 + 2,860 log L
<br />where L = tolal body length in millimeters
<br />,1/111 \V = wcight in grams. The hypothesis
<br />Ihat thc regression coefficients and the ad-
<br />justed means were equal was tested by
<br />analysis of covariance, and all "F" values
<br />were significant at the ,01 level. Thus the
<br />roundtails awl Ihe bony tails had significantly
<br />differellt length.weight relationships, The
<br />roundlails hecame heavier than the LOllY tails
<br />as body length increased.
<br />
<br />1964
<br />
<br />JUNE 14 -17
<br />II
<br />
<br />201
<br />
<br />~:~
<br />
<br />,or
<br />~ rOr
<br />0(
<br />U 50r 0
<br />VI lot ~
<br />"'0
<br />~ IO[ 1 JULY 21-)1
<br />- L-----L----L...-....-.-,...... . .
<br />~ ~:[ I AUG 1- 4
<br />~ k..- --
<br />01( 50r
<br />>- 10~
<br />J:
<br />~50l 0 SEPT 5
<br />
<br />~ 10 -~-_.------L.-__----l.-_____---L---J
<br />
<br />O,oL 0 SEPT 12-15
<br />ci '0 ......
<br />z
<br />,or
<br />'0[_
<br />0-'- Z~
<br />
<br />I
<br />....... --
<br />
<br />I
<br />~
<br />
<br />JUL.'Y 4-12
<br />
<br />II
<br />-----.l----J
<br />
<br />I
<br />-
<br />
<br />JULY 16-20
<br />II
<br />
<br />,
<br />i
<br />I
<br />I
<br />!
<br />i
<br />i
<br />r----~~L, -
<br />I .o~ ~
<br />I ~~';LL
<br />I g ~~~ .:
<br />
<br />I -50r
<br />
<br />I ~ ::r 0
<br />~IOt~
<br />, .
<br />I J: ~Or 0
<br />'I VI ~
<br />~. 51~r 0
<br />I 0 'ot._______
<br />o
<br />z ~:~
<br />
<br />,or
<br />lOr
<br />o
<br />
<br />I
<br />~
<br />
<br />AUG 10 -21
<br />
<br />,15
<br />
<br />100
<br />
<br />, ,
<br />125 /50
<br />
<br />>0
<br />
<br />1965
<br />
<br />II
<br />
<br />II
<br />
<br />JUNE 6-1
<br />
<br />n
<br />
<br />JUNE 15
<br />
<br />I
<br />-
<br />
<br />n JULY 6-7
<br />
<br />JULY 27~28
<br />
<br />- --L--...----J.-__~
<br />
<br />I
<br />I ---
<br />
<br />AUG 1-9
<br />n
<br />
<br />AUG 19-2'4
<br />n
<br />
<br />iL
<br />
<br />I
<br />--
<br />
<br />SEPT 7-'2
<br />
<br />NOV 14
<br />
<br />-------.....J...______.....I.......__J
<br />15 100 125 .~o
<br />
<br />2>
<br />
<br />'0
<br />
<br />>0 1966
<br />loL__~4______:.. ___ _.APAI ~"~__2:
<br />~t__---,--~___ L.. _ ~_~ln:
<br />;;;~t__~___'_____~E~-~
<br />oJ
<br />..:
<br />~~~~ ~-L- _rt JUNE 21
<br />
<br />g ~Or- JUL Y 19-21
<br />:: lOt ~ ___----I
<br />50r AUG I
<br />Z tof 0 n:
<br />~ 50~.-----....J.....------>.-------.L --- - ----'
<br />I- ,0L 0 -----'---__..1 __A_~~~
<br />
<br />~50; ~ AUG 7-8
<br />i: 10L__~ _ --.!.. _ j ---.-'--!...___-i
<br />...
<br />050r 0 AUG 19
<br />~ 10[_ ~~~___ __~ __~___~
<br />
<br />,or 0
<br />lO~ -- ~____ ,-~::.~
<br />~:r 0 OCri 29
<br />[_._._,~----> -----~--,
<br />o 2' '0 75 tOO IZ' "0
<br />TOTAL BODY LENGTH - MM
<br />
<br />FIGUHE 7,- L,'n~tldrt.lJlh.ncie" of }11\1Il~ Colorado
<br />chubs, Grecn Hivcr, l%,t, ]%5, and 1966,
<br />
<br />OCT 31
<br />
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<br />APFi II
<br />
<br />WAY 16
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