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<br />. ( . <br /> <br />. r <br /> <br />'1';lc~sLciL.Ut; of X.;,TUu.cr'!8.{1 i1:" !.;r:e ut'PGr 0J.sL.l (a;...vve Granq CalljO{"!) <br /> <br />has been outlined by Vani~eic a.c~d Franklin (1970) and by Holdel! <br /> <br />and Stalnaker (1970). <br /> <br />From June 1974 through June 1975. the USDr F'ish and Wildlife <br /> <br />Service contracted the Lower Colorado River Basin Research Labora- <br /> <br />tory at Arizona State University to initiate a complete life his- <br /> <br />tory study of x. teX&lUS in Lake Mohave. Originally intended to be <br /> <br />a five-,year study, the research labol.'atol'yvlas assigned a f irst-' . <br /> <br />year task of i~lvestigating the specific areas of early development. <br /> <br />adult sexual dimorphism 6l1ld fecuniity. The overall aim of this 1'e- <br /> <br />search is to provide criteria for evolving a manae5ement p1'og1'alll Cd.- <br /> <br />pable of saving tili s ~hr8atened, 11a\;i ve ge!lllS from total c.estruc-;, <br /> <br />tion. <br /> <br />HA'I'EIU.ALS Al'W NhtHODS <br /> <br />The Lowe~ Colorado River Basin Research Laboratory conducted <br /> <br />field studies on Lake Moh~ve reservoir in harch aad April 1975 for <br /> <br />the purpuse of capti..l.ring live, adult razorback suckers. Fish ~\j'e.l"e <br /> <br />::'a~i:~!l Ly trammel 11~t (i-in mesh withlll l-ft; mesh. bar measur"e) <br /> <br />... . <br />cU.. <br /> <br />t~.;o locali ties on the Arizoua bank: <br /> <br />(1) on the Colorado River ap- <br /> <br />'.'!::...,'..,,--....._7""......... -', --~_.;:t^':.....--; -.-.'t <br /> <br />"1Ilr"l <br />