Abstract
Abstract Retention time and effects of surgically implanted radiotransmitters on growth and survival were evaluated for Colorado squawfish Ptychocheilus lucius and razorback sucker Xyrauchen texanus from the Green River, Utah. No transmitter expulsion was detected during radiotracking of 97 Colorado squawfish and 9 razorback suckers that had been implanted between 1978 and 1985. Of 14 transmitters removed from recaptured fish, 12 had been retained from 3 months to 8 years in Colorado squawfish and 2 had been retained for 1 year in razorback suckers. This suggests surgical implants may be retained for the life of the fish. Growth rates of implanted fish did not differ from those of nonimplanted fish of the same size range. There was no difference in mortality between implanted and dangler-tagged fish. Beeswax provided a suitable coating for the surgical implants.
Published Version
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