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<br />110
<br />
<br />. ..
<br />
<br />COl'E!.\. I!J70, NO.3
<br />
<br />
<br />"'(~.~.;~
<br />
<br />
<br />Fi~. I. (;;1" "Y[""'. G. clC~"".\. alltl G. I'. mblHln hOlll lop t" hnll""'.
<br />
<br />(;It'C1I alld Yalllpa rinTs o[ lIorthcrn lllah
<br />a"tI Color;IILo.
<br />
<br />(;il" t'\'[dw l\liller (I!llli). Crand Callyon o[
<br />Colorado !tin:r, Arizona.
<br />
<br />1\/illcr (lfllIi) lisled as snl"pcci('s of C.
<br />)"olnts/a: "(jluDra, ('/C{!JUIS, s('lIrilllu{o, ;llld
<br />ill(,T,I/I'''ill. Ill' ;lId;,al('(1 Ih('y W('IC ('(ol,,/!:i.
<br />I;d s"h'pccics. s"ggcs,i,,/!: r;lpid par;dkl no.
<br />Jution ill disjunn. yet sirllilar, hahitats.
<br />precludill!?; the idea of a single enllutiollary
<br />line for ('ach [Orlll. This study was nlll.ler-
<br />1:,1:.('11 10 e"amille the ecosllhspecics COllccpt
<br />as applied to Colorado hasill Ciln. Ohjcc-
<br />lilTS o[ the slndy were: 10 delcTmi"e sys.
<br />lenl;"i( relationships het\\"Cen 11I(,llIhcrs 01
<br />the Cil" cOlllplex ill thc upper Colorado
<br />Ri,'er h:\.,ill; to delerlllinc :nnonnl o[ illlra-
<br />specilic ,'arialioll cxhihitcd hy mcmhcts o[
<br />this complex.
<br />
<br />I'ROCI':lIl1RI':S ";';Il 1\1 f:lIlOIlS
<br />
<br />SCI'eraJ hundred Gila specilllens were ex-
<br />;nnincII. O[ thcsc. 30fl spccil11ellS rangill!?; in
<br />slandard lenglll from 159 to 'I;I~) mOl werc
<br />illtcnsi,dy studied by t;lximc(rics analysis.
<br />Sillcc ge"eral hody morphology is very di[.
<br />fercut hctwceu mature allll inlln;tlurc [ish,
<br />a mi"illlum size of 210 nlln sl;IIHl:inl lengtll
<br />was e"forccd [or most [ish sludied. Speci-
<br />11)('''' wcrc collected prilllarily hy P('l'SO,,"e1
<br />o[ the \ ',ah Cooperat;\{: Fishery (I"it. l'l;,h
<br />SI;lIe (Inin'rs;ly. frolll IIIli2 to Illli7. ,\ddi-
<br />
<br />tional specimcns "TIT graciously 1,,;,," ,I ;
<br />\V. L. 1\lill(kky. :";IlI":' ,<;I;lte ('ni",.,..
<br />Ernest \';,dllllT. I r. S. National Mil",,'"
<br />and John Li,"Csay. l'tah Slate \)Cl'a"",'"
<br />o[ Fish and G;lIuc. These s('eeil11('II' 1'1'
<br />st'1l1 I'ollc'(\ io", frol1l "pp('r (:1('1'11 It;..--
<br />
<br />~~-~-l-.)~!lJ -=~~-
<br />."lL rll''''I~c.
<br />GQAC.{
<br />Il(U'l\lC'.Q
<br />DI"'QSAUR ~_
<br />"'V.DA: i ., D(sol~:~J'~":~~~/'.;~ -.:'~.'.
<br />
<br />. ~""UO~ .
<br />~~I~~~AL ': " GR[(\~ - /lC~~~;:Q.'
<br />I':' \... .,,-
<br />Co .."I...
<br />.' \"IIl.G'''' A /
<br />: -------'/~~{.."" ~'~
<br />. ,....... J--....
<br />lI1Tl( "
<br />~~~(AV[ 'CL""YOfol c.~',-OClAOO
<br />
<br />Al'",,,",LA"'O,^\ ~//'
<br />
<br />COLORADO A L.../-<f"r..~ N[w ..~",_..
<br />~.~S"'l' Ill. "e/{
<br />
<br />. 'GILA . -;::,:~\-v~
<br />
<br />
<br />
<br />Fif!;. ~. ~Lol' of "1(' (;"Iorad" Rill" ,
<br />~ho\\'illJ.'; ;IIT:IS (If fisll ((IIIt:c:li(Jll~ (.1 II.'"
<br />Ihis sludy.
<br />
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