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. 1 . ~ <br />500 <br />450 <br />400 <br />r-. <br />~ 350 <br />W <br />C~ 300 <br />Q <br />U 250 <br />~_ <br />200 <br />150 <br />100 <br />I <br />n=27 ~ <br />... , <br />.'- ,. <br />~ ' <br />,' . . <br />~ ~~ ~' <br />~. <br />I <br />,'` ~- ''~ <br />,~ ,, ,-. <br />. , ., ~ <br />•,~ <br />I <br />~, <br />~~, <br />_. , <br />'~ ~ <br />T ,~ <br />B I <br />25 <br />20 <br />15 (~ <br />0 <br />cL <br />10 Iw- <br />5 <br />0 <br />APRIL MAY ~ JUNE JULY <br />Figure 4. Relation between average discharge, temperature, and initiation of <br />spawning migration for Colorado squawfish to Green River spawning grounds. <br />Solid vertical lines =average dates first and last radio-tagged fish <br />exhibited movement to spawning grounds; dashed vertical line=average date <br />all radio-tagged fish exhibited migratory movements; n=total number of <br />radio-tagged fish. <br />