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<br />monitoring, and data management; conduct research to acquire life history <br />information and enhance scientific techniques required to complete recovery <br />actions; identify additional razorback sucker spawning areas in lower Green <br /> <br />VI. Study Goals, Objectives, and End Products: <br /> <br />A. Goal: Relate historic collections of young razorback sucker or humpback chub to <br />capture information (e.g., date, time, location) and information on annual/seasonal <br />environmental conditions such as flow, temperature, and habitat. By doing this, it is <br />hoped that a clearer picture will emerge as to the past reproductivelrecruitnient <br />success and environmental requisites of these fishes. <br /> <br />8. Objectives: <br />1. To identify late larvae and early juveniles of razorback sucker or <br />humpback chub in past collections of young fishes from the Green <br />River system (housed in several locations but primarily in the Larval <br />Fish Laboratory, LFL) by applying recently developed diagnostic <br />characters for species separation (developed by LFL). Before <br />development of these diagnostic characters, identity of field-collected <br />and laboratory-processed young potential razorback chub or <br />humpback chub was listed as tentative or possible, or left at genus in <br />the case of Gila. <br /> <br />2. If young razorback sucker or humpback chub are identified, relate <br />collections to samplil1g and environmental conditions at time of <br />capture. <br /> <br />C. End product A report will be prepared that will be synthesized with results of <br />other studies in the 5-Year Flaming Gorge Flow Investigations Program final report. <br /> <br />VII. How is this study contributing to recovery? Are the study goals and <br />objectives being met? <br /> <br />This study is related to Several hypotheses stated in the overall Flaming Gorge <br />Research Program, especially those concemed with reproduction and recruitment of <br />razorback sucker or humpback chub. Data collected in this study will be particularly <br />valuable for documenting past reproductive/recruitment success of razorback sucker <br />or humpback chub in the Green River system and assessing environmental <br />conditions during a certain capture year or season. Adverse effects of sampling on <br />endangered fishes in the Upper Colorado River Basin has been identified as an area <br />of concem within the Recovery Program. One way to reduce field sampling is to <br />make better use of information already available, including a more thorough <br />examination of past fish collections. <br /> <br />2 <br />