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<br />--"":1~""'''''-''''--'''-'''' -'-'-'... '-"'-..L..LV'-.....~L.<=:~ c.lL L"'- ..l.IILt.::LlldL.LUllc1.L UurUeL. <br /> <br />V. Hatcheries <br /> <br />.0 <br /> <br />Federal and state fish and wildlife agencies WIll conduct <br /> <br />research to determine if hatchery-reared fish released into the <br /> <br />Colorado River system will either contribute to the increase 1n <br /> <br />abundance within existing populations or to establishment of new <br /> <br />populations. This will involve release of stocks of hatchery- <br /> <br /> <br />reared individuals of appropriate age classes into certain criti- <br /> <br /> <br />calor essential habitat areas and extensive monitoring of the <br /> <br /> <br />behavior and reproductive success of these individuals in the <br /> <br />wild. The goal will be to evaluate, over the long term, the <br /> <br /> <br />effectiveness of hatchery programs in supplementing the recovery <br /> <br /> <br />measures. The effectiveness of hatcheries must be established <br /> <br />prior to commitment of resources to a hatchery program. <br /> <br />A research program adopted to evaluate the effectiveness of <br /> <br />. hatcheries shall consider, among other things, the efficacy of <br /> <br />developing rearing channels in which fry could be reared under <br /> <br />conditions approxinlating the natural ellviroIlnlent but from which <br /> <br />predatoc species coulc be e~cluced, <br /> <br />Once reared to a suitable <br /> <br />age, the C;1ClnnE:]S could b(: breClched, permitt.i.ng the fish to <br /> <br />escai)C to [~10 ]-j'..c~' <br /> <br />'i.'h.i.s !;'l~:..~lO,--:O]()q'/ llltlY jlerlnit increased <br /> <br />survivi:'..: \~.:liJe t:\:o'--,11.:lCj p.:.:-ob.l.eJ11~-;) of i:nprinting, disease, and may <br /> <br />be much less eX(Jel1sive tllOIl construction of new 11atcheries. <br /> <br />In no event ''''';': ].1. stocks collected [rom the Green River sub- <br /> <br />basin be introduce'\; into tht: L~olorado Hivcr sub-basin, and vice <br /> <br />verso. <br /> <br />~~i;:li.lal"Jy, :..I:.f-; .(;tOCK~) cllr-rcnl.ly being used for research <br /> <br />likely 2re :10 1 a:"!'>" 9"netically suitable for release to the wild <br /> <br />. <br /> <br />l J <br />