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<br />IV. Study Schedule: <br />Final Summary: <br /> <br />1994 through 1997 <br />April 1998 <br /> <br />V. Relationship to RIPRAP: <br />Colorado River Action Plan: Mainstem <br />n.A.To restore and manage flooded bottomland habitat. <br /> <br />VI. Accomplishment of FY 97 Tasks and Deliverables, Discussion of Initial Findings and <br />Shortcomings: <br />Due to insufficient number of larvae spawned from razorback suckers stocked in 1995, <br />larvae from razorback sucker broodstock held at Horsethief refugia ponds were used in <br />the larval survival, growth, and bioaccumulation study. Larvae were not available to <br />stock at Adobe Creek to monitor overall growth rates. <br /> <br />After the eggs were water hardened, they were transferred to the mobile laboratory. <br />The eggs were monitored daily for viability and number of live and dead eggs were <br />recorded. A sample of unfertilized eggs from each female was collected and analyzed <br />for selenium and other trace elements. <br /> <br />After hatching, 10 larvae from each spawn were placed in a larval exposure chamber <br />for 30 days to assess survival, growth, and abnormal development. Two replicates <br />from each of the 3 spawns were exposed to 4 treatments; i.e.brine shrimp & hatchery <br />water, brine shrimp & site water, site food & hatchery water, and site food & site <br />water. <br /> <br />Water quality parameters have been measured in situ at 7 sample locations on a weekly <br />basis. Water and invertebrate samples have been collected on a monthly basis and <br />sediment samples collected on a semi-annual basis for analyses of selenium and other <br />trace elements. Water chemistry analyses have been performed on water samples on a <br />monthly basis. <br /> <br />Depuration rates in adult razorbacks were also documented at 30, 60 and 90 days. <br /> <br />Vll. Recommendations: <br />None. <br /> <br />vm.Project Status: <br />On-track and ongoing. Final Report expected to be delayed 1 month. <br /> <br />IX. <br /> <br />FY 97 Budget: <br />A. Funds Provided: <br />B. Funds Expended: <br />C. Difference: <br /> <br />$91,730.00 <br />$88,730.00 <br />$ 3,000.00 <br /> <br />2 <br />