Document Type

Thesis

Abstract

Length and age data were collected from a population of stream resident Dolly Varden (Salveilnus malma) in the Tiekel River in southcentral Alaska during the summers of 1985 and 1986. In addition to stream-dwelling individuals, fish in­habiting beaver ponds in the Tiekel River drainage and the nearby Little Tonsina River were also sampled. From these data, a description of some basic charac­teristics of the Tiekel River population was developed. The Tiekel River Dolly Varden population is young, with high natural mortality after age 4, especially in the mainstem Tiekel. Fish in this drainage mature at young ages and small sizes. Although they do not reach lengths or ages as great as anadromous char, Dolly Varden of the Tiekel River drainage are similar in both length and age to resident char reported in other studies. Habitat plays an important role in determining both growth and life span of these fish. Beaver ponds are capable of producing larger fish than the mainstem, and some beaver ponds are more productive than others.

Publication Date

9-17-1988

Handle

http://hdl.handle.net/11122/14756

Download

Share

COinS