Evaluations of introduced lake trout in the Tanana drainage, and estimation of mortality using maximum age analysis

  • 0 Ratings
  • 0 Want to read
  • 0 Currently reading
  • 0 Have read
Evaluations of introduced lake trout in the T ...
John M. Burr
Not in Library

My Reading Lists:

Create a new list

Check-In

×Close
Add an optional check-in date. Check-in dates are used to track yearly reading goals.
Today

  • 0 Ratings
  • 0 Want to read
  • 0 Currently reading
  • 0 Have read

Buy this book

Last edited by WorkBot
January 18, 2010 | History

Evaluations of introduced lake trout in the Tanana drainage, and estimation of mortality using maximum age analysis

  • 0 Ratings
  • 0 Want to read
  • 0 Currently reading
  • 0 Have read

Lake trout stocked as yearlings (age-0) into small lakes in the Tanana drainage in 1988, 1989, and 1991 were sampled during 1992 to estimate abundance, growth, and survival. Estimated abundance of stocked lake trout > 244 millimeters fork length in Coalmine #5 Lake was 650 fish (SE = 167); > 214 millimeters in Pauls Pond was 316 fish (SE = 30); > 159 millimeters in North Twin Lake was 711 fish (SE = 171); > 184 millimeters in Chet Lake was 427 fish (SE = 25); > 188 millimeters in Nickel Lake was 476 (SE = 53); > 228 millimeters in Ghost Lake was 27 (SE = 5); and > 135 millimeters in Rapids Lake was 50 (SE = 13). Growth was rapid in these small lakes and was equal to or exceeded rates estimated from wild populations. Survival to age-4 for the populations varied from 0.01 to 0.017 with a mean of 0.11 (SE = 0.02). Mean survival to age-3 was estimated at 0.26 (SE = 0.03, 0.03 - 0.62). Survival to age-1 varied from 0.01 to 0.71 with a mean of 0.36 (SE = 0.09). Stocked lake trout were present in sufficient numbers at Fourmile, Triangle, and Fourteenmile lakes to warrant future stock assessment. Catch rates of stocked lake trout in Summit Lake were too low to encourage future stock studies; no lake trout were caught in West Twin Lake. Total annual mortality was estimated for eight wild lake trout populations using maximum age analysis. Estimates varied from 0.17 in Twobit Lake to 0.55 in Paxson Lake. The results using this method compared well with results from the Jolly Seber method.

Publish Date
Language
English
Pages
64

Buy this book

Book Details


Edition Notes

"August 1993".

"Literature cited": p. 46-47.

Also issued online.

Published in
Anchorage, Alaska
Series
Fishery data series -- no. 93-27.
Genre
Statistics.

Classifications

Library of Congress
SH11 .A7542 No. 93-27

The Physical Object

Pagination
vi, 64 p. :
Number of pages
64

ID Numbers

Open Library
OL15578296M

Community Reviews (0)

Feedback?
No community reviews have been submitted for this work.

Lists

This work does not appear on any lists.

History

Download catalog record: RDF / JSON
January 18, 2010 Edited by WorkBot add subjects and covers
December 11, 2009 Created by WorkBot add works page