Laserfiche WebLink
<br />. <br /> <br />. <br /> <br />. <br /> <br />EXECUTIVE SUMMARY <br /> <br />. <br /> <br />A study to determine Colorado squawfish spawning requirements, using radio <br />telemetry, was initiated in April, 1978. Seven squawfish were surgically im- <br />planted with radio transmitters. Only one fish was located for any period of <br />time, and it too was lost after a month and a half of tracking. That fish moved <br />over 78 miles downstream during the course of the study. The project was termi- <br />nated on July 18 after thorough searches of the study area failed to reveal any <br />transmitter signals. The major reason for the unsuccessful completion of the <br />project appears to be failure of the transmitters to perform properly. Tests <br />with five unimplanted tags showed weakening of signal strength over time, changes <br />in frequency, and weakness in initial strength. All of these problems could' have <br />contributed to the failure to locate the implanted fishes. Reconmendations for <br />future studies include an equipment test study to be conducted before additional <br />spawning studies are initiated; early initiation of spawning test studies so <br />equipment can be obtained and checked before squawfish are implanted; and pro- <br />curementof manufacturer's guarantee for the equipment to be used. <br />This report was submitted in fulfillment of Contract No. 14-16-0009-77-050, <br />Work Order No.3, by BIO/WEST, Inc., under the sponsorship of the Office of Bio- <br />logical Services, U. S. Fish and Wildlife Service. Work was completed as of <br />August 4, 1978. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />viii <br /> <br />. <br />