Contributions

  • Alaska. Division of Sport Fish. - Contributor

Publication

1998 - Alaska Dept. of Fish and Game, Division of Sport Fish, Research and Technical Services, Anchorage, Alaska

Language

English

Word Count

8,500 words, Guess

Page Count

34 pages

Identifiers

Classifications

  • LCCSH11 .A7542 no. 98-37

Description

In 1995 and 1996, 110 adult Arctic grayling Thymallus arcticus with implanted radio transmitters were released at their summer feeding area in the Delta Clearwater River, a spring-fed tributary to the Tanana River in interior Alaska. The fish were tracked from aircraft and by boat for one year after implanting to locate overwintering and spawning areas and to estimate fidelity to the Delta Clearwater River for summer feeding. The majority of fish overwintered within a 115 mi reach of the Tanana River. Spawning areas were found in eight streams up to 72 mi distant from release. The greatest proportion of radio tagged fish spawned in the Goodpaster (59%, SE = 7%) and Volkmar (20%, SE = 6%) rivers. After spawning, 98% (SE = 3%) of live fish returned to the Delta Clearwater River for summer feeding. A radio tag shedding rate of 25% (SE = 9%) is estimated from recaptures of 24 radio-tagged fish one to two years after release.

Subjects

Topics

StatisticsFish taggingRadio trackingArctic graylingFish populationsFish tagging -- Alaska -- Delta Clearwater River -- StatisticsArctic grayling -- Alaska -- Delta Clearwater River -- Statistics

Places

AlaskaDelta Clearwater River

Series Statement

  • Fishery data series -- no. 98-37.

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