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<br />The number of native species in the 2002 collection, in general, was extremely low. Native <br />YOY species collected include !1annelmouth sucker (n = 9), bluehead sucker (n = 2), and <br />Gila spp. (n = 3). Seine samples continue to be dominated by nonnative cyprinids including <br />red shiner, fathead minnow, and sand shiner. A higher incidence of black crappie was <br />observed in the 2002 collections with the first appearance of crappie near river-mile 252.8 <br />(Ouray National Wildlife Refuge) and continued down river through the remainder of the <br />sampling reach (RM 226). A total of 14 samples were preserved for later identification and <br />enumeration in the UDWR laboratory. <br /> <br />Colorado Pikeminnow Young-of-the-year <br />ISMP fall seineing 1992 - 2002 <br /> <br />350 <br />~300 <br /><= <br /><= <br />E250 <br />" <br />-'" <br />~200 <br />'0 <br />OJ <br />.Q 150 <br />o <br />o <br />'0100 <br /> <br />- ~ <br />- f- <br />- , f- <br /> , <br /> : <br /> , <br />- , <br /> 1; <br />- f- <br /> ,. " <br />- ., f- <br />';'1 <br /> , -. <br /> .,1-. <br />- , .s , - <br /> , , r, . ~ <br /> , r: , ~, " <br /> I <br /> <br />70 <br />60 <br /> <br />s:: <br />50 :E <br />::J <br />40 :; <br />::J <br /><0 <br />30 :;: <br /> <br />:;; <br />..0 50 <br />E <br />:J <br />Z <br /> <br />~ <br />20 ~ <br />~ <br /> <br />o <br /> <br />10 <br />o <br /> <br />92 93 94 95 96 97 98 99 200020012002 <br />Year <br /> <br />o Number pikeminnow (Y1) <br /> <br />o Mean length (Y2) <br /> <br />Figure 1. Number and mean length ofYOY Colorado pikeminnow collected during fall <br />ISMP seining in the middle Green River: 1992-2002. <br /> <br />FY 2002 Annual Report 22c Page - 3 <br />