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G~~ ~ ~~ <br />~ :. ~~ <br />~ !~,s <br />RESULTS '`'!~1~ ~,U ~~~ . ~ J`' <br />~, ~' ~~ ~ 1 <br />~~ <br />Razorback suckers ~~ ~ ~~( `~' ~ ~ , <br />Adult sampling 1 ~U" ~~ <br />~~ <br />No adult razorback suckers were found during specific project sampling, however one adult ~ , ~ C <br />razorback sucker was collected while conducting ISMP electrofishing in 1995 at Mineral G~f~ ~ ~,~ ,~ <br />~ .~ t <br />Bottom. This fish (TL= 559mm, Wt = 2150 g, PIT # = 1F74374E68) was caught 43 miles below ~ , <br />the San Rafael River at RM 53.8 on May 1b, 1995. ~ `~Q~-a ~ ~ ~~~~ <br />~' v ~S <br />In 1994, 14.9 hours of electrofishing effort was expended in the study areab, l9 hours in 1995. <br />Flannehnouth suckers (Catostomus latipinnis) were the most abundant species collected both <br />years. In 1994, other species collected in order of decreasin ance.~ere: channel catfish <br />(Ictalurus punctatus), common carp (Cyprinus carpio), C lorado uawfis and bluehead sucker <br />(C. discobolus) (Figure 3). In 1994, 19.5% of the flanne ~ uth rs coll in the Green <br />River main channel were tuberculated and 6.5 % of those were running ripe. No o fish <br />showed signs of reproductive maturity. In 1995, walleye (Stizostedion vitreum) were cull ed in <br />addition to those species collected the previous year (Figure 4). Only one flannelmouth sucker <br />was running ripe of those collected in 1995, 14% were tubercazlated, and 27.4% appeared to be in ~}~ <br />post spawn condition. One bluehead sucker was tuberculated. /~ y \ <br />Larval / YOY sampling ~ ~~ \~ <br />A total of 333 ~ . ~~ <br />.2 and 458.7 larval trap hours were accumulated m 1994 and 1995, respectively. U ~~` ~ <br />In 1994, a total of 441aival razorback suckers were collected in the lower Green River near the ~ ~\~ <br />j -f the San Rafael river (RM 97.0) with the majority of those (n=36, 82.8%) collected on ~' %~ <br />/ June O 1 1). Collection dates ranged from May 17th to June 16th, and total lengths <br />ranged from 10 up to 14.2 mm (Figure 5). Four sympatric native species were collected: <br />flannehnouth sucke , bluehead suckers, speckled dace and Gila spp. in decreasing order of <br />abundance (Figure 6)~~ Sympatric native sucker collections peaked on the same day as the <br />razorback collections. \Red shiners (Cyprinella lutrensis) were the most abundant species overall <br />in the 1994 collections, accounting for 53.7% of the total catch (N= 2041). Non-native cyprind <br />collections generally incr through the period of study. <br />~\ <br />~~ <br />I, <br />DRAFT ~, g ~ ~~~, <br />ti <br />!~~ <br />