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.w ,~.......r <br />•r....... a...> w.a. <br />UNITED STATES GOVERNMENT <br />Memorandum <br />U S. FISH ~ WILDLIFE SERVICE <br /> <br />~ ~ Regional Director, Region 6, Fish and Wildlife <br />Service, Demver, Colorado <br />rxoY ~~ ~q~~ Manager, Fish and Wildlife Service, phoenix, <br />Arizona <br />suslECr: Draft Him~pbaclc Chub Recovery Plan <br />~Ta: A~S~_~, 1978 <br />~ ~F <br />~~s~ <br />We have reviewed the subject draft recovery plan and have the following <br />comments: <br />The text discusses five known areas of humpback c~nib ~: <br />I-1 <br />however, the map aai page 6 shows four areas. <br />Throughout the draft plan the need for a better means of capturing <br />humpback chubs is discussed. Has the team considered instead of <br />the biologist going to-where they suspect the fish to be. ~eY let <br />the fish caane to them? It may be possible to capture the fish by <br />constructing ~ electric weir which would divert chubs into a trap. <br />i-2 If properly designed it might be possible to capture fish moving <br />both up and down the river. Weirs of this type are often used in <br />the northwest where adult salmon and stbelheadible to design and <br />from a stream into a hatchery. It ~Y~ P° rtable generator <br />constzuct a weir which could be powe by Po _ <br />and be easily moved from one area to another ~i ~bia1 ~ a~ <br />of this type of weir aver a stationary rack <br />,~;n;~~ maintanence needs. <br />Another method of solving the taxonolay questions that the team might <br />consider involves using the technique of starck-gel-electrophoresis. <br />I '3 This technique has been used successfully on Pacific salmonids to <br />identify races within a species. <br />~ The implenentation schedule and proposed budget should be modi1b1~ <br />to show which Fish and Wildlife Servcce Region will be respons' <br />. for what P~ of the costs. For e~cample, 'fie P~ discusses the <br />I-6 use of lfi].low Beach Nt~i as a refugia and a production facility for <br />chubs, yet in the budget section of the plan a single amount is <br />shown. For this region to adequately budget for holding and rearing <br />the fish we need to knew how much is available to this region. <br />~ ~~ <br />`~ <br />.yy ,1` <br />n76-19'~ <br />43 <br />RECEiv~D <br />SEP 5 '78 <br />a <br />~~ ~sststu~ <br />