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<br />000582 <br /> <br />34 <br /> <br />IN 6. Describe the relative importance of various tributaries to flannelmouth <br />survival (spawning, recruitment, predation). <br /> <br />IN 7. What is the food source in the mainstem now? Is there a sufficient food base <br />for adequate growth and a healthy population in the mainstem? What was <br />historic food source? <br /> <br />IN 8. Determine the optimal habitat conditions for flannelmouth sucker. <br />reproductions, survival, recruitment, etc., i.e., temperature, flow, food, shelter. <br />What habitat factors in the mainstem attract adult Flannelmouth suckers to <br />spawn? What is the attraction over tributaries, i.e., Paria River? <br /> <br />IN 9. Determine the fidelity of Flannelmouth suckers to certain areas and spawning <br />beds,. <br /> <br />IN 10. Determine if possible the current and historic use of Flannelmouth sucker <br />habitat for spawning, foraging, cover, etc., within the Colorado River and <br />Paria Rivers as well as other tributaries. <br /> <br />IN 11. Develop a Flannelmouth sucker conceptual model for the Colorado River <br />ecosystem, i.e., food, habitat, predation. <br /> <br />IN 12 What habitat modifications could be made to improve Flannelmouth sucker <br />population levels and overall health, i.e., substrate modification, nursery <br />habitat establishment (warm backwaters), flow modification, etc. <br /> <br />IN 13. Ass~ss the influence of non-native fish on native fish species. <br /> <br />IN 14. Det~rmine the effect of current selenium levels discharged from Glen Canyon <br />Datti on native fish species. <br /> <br />Revised 6-10-98 <br />