Evaluations of introduced lake trout in the Tanana drainage, and population abundance of lake trout in Sevenmile Lake

by John M. Burr

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Published 1994 by Alaska Dept. of Fish and Game, Division of Sport Fish in Anchorage .
Written in English

Subjects:

• Lake trout -- Alaska -- Interior Region -- Statistics.,
• Fishes -- Alaska -- Interior Region -- Statistics.,
• Fishery resources -- Alaska -- Interior Region -- Statistics.

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About the Edition

Lake trout stocked as yearlings (age-0) into small lakes in the Tanana drainage in 1988, 1989, and 1991 were sampled during 1993 to estimate abundance, growth, and survival. Estimated abundance of stocked lake trout >150 millimeters fork length in Coalmine #5 Lake was 211 fish (SE = 11); >175 millimeters in Paul"s Pond was 154 fish (SE = 9); in North Twin Lake was 217 fish (SE = 54); >210 millimeters in Chet Lake was 180 fish (SE = 10); >150 millimeters in Nickel Lake was 265 (SE = 38); and >160 millimeters in Rapids Lake was 213 (SE = 34). Growth was rapid in these small lakes and was similar to rates estimated from most wild populations. Survival to age-5 for the populations varied from 0.01 to 0.17 with a mean of 0.11 (SE = 0.02). Mean survival to age-4 was estimated at 0.26 (SE = 0.03, range 0.03 - 0.62). Survival to age-2 varied from 0.01 to 0.22 with a mean of 0.09 (SE = 0.02). In 1991, estimated abundance of lake trout 250 millimeters and larger in Sevenmile Lake was 1,426 (SE = 57). Abundance of adult lake trout (>375 millimeters FL) of both sexes was estimated to be 931 (SE = 57) in 1991 and 1,139 (SE = 152) in 1993. A total of 107,500 eggs were live stripped from 90 females. This number of eggs represents a minimum of 20 percent of the annual egg production of the population.

Edition Notes

Statement	by John M. Burr.
Genre	Statistics.
Series	Fishery data series -- no. 94-18.
Contributions	Alaska. Division of Sport Fish.
Classifications
LC Classifications	SH11 .F574 1994 no. 18
The Physical Object
Pagination	vi, 58 p. :
Number of Pages	58
ID Numbers
Open Library	OL15577208M

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