Density-independent survival of wild lake trout in the Apostle Islands area of Lake Superior

被引:14
作者
Bronte, CR [1 ]
Schram, ST [1 ]
Selgeby, JH [1 ]
Swanson, BL [1 ]
机构
[1] WISCONSIN DEPT NAT RESOURCES, LAKE SUPER OFF, BAYFIELD, WI 54814 USA
关键词
lake trout; recruitment; survival; Lake Superior;
D O I
10.1016/S0380-1330(95)71097-8
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The lake trout (Salvelinus namaycush) stock at Gull Island Shoal in western Lake Superior was one of only a few stocks of lean lake trout in the Great Lakes that survived overfishing and predation by the sea lamprey (Petromyzon marinus). Since the mid 1960s, the abundance of wild recruits measured at age 0 and the number of age-7 to -11 wild fish recruited to the fishable stock have increased. We used the Varley-Gradwell method to test for density-dependent survival between these life stages. Survival from age-0 to ages 7-11 was not affected by increasing density, which suggests that further increases in recruitment and stock size are still possible. We suggest that testing for the existence of density-dependent survival can be used to indicate when lake trout populations are rehabilitated.
引用
收藏
页码:246 / 252
页数:7
相关论文
共 35 条
[1]   Hatching, dispersal, and bathymetric distribution of age-0 wild lake trout at the Gull Island Shoal Complex, Lake Superior [J].
Bronte, CR ;
Selgeby, JH ;
Saylor, JH ;
Miller, GS ;
Foster, NR .
JOURNAL OF GREAT LAKES RESEARCH, 1995, 21 :233-245
[2]  
BRONTE CR, 1995, 1995 M LAK SUP COMM
[3]   Genetic strategies for lake trout rehabilitation: A synthesis [J].
BurnhamCurtis, MK ;
Krueger, CC ;
Schreiner, DR ;
Johnson, JE ;
Stewart, TJ ;
Horrall, RM ;
MacCallum, WR ;
Kenyon, R ;
Lange, RE .
JOURNAL OF GREAT LAKES RESEARCH, 1995, 21 :477-486
[4]  
BUSIAHN TR, 1990, GREAT LAKES FISH COM, V901
[5]  
Conner DJ, 1993, TECHNICAL REPORT, V59, P1
[6]  
DRYER WR, 1965, T AM FISH SOC, V94, P169, DOI 10.1577/1548-8659(1965)94[169:FOLTIL]2.0.CO
[7]  
2
[8]   REHABILIATION OF LAKE TROUT IN APOSTLE ISLANDS REGION LAKE SUPERIOR [J].
DRYER, WR ;
KING, GR .
JOURNAL OF THE FISHERIES RESEARCH BOARD OF CANADA, 1968, 25 (07) :1377-&
[9]  
ESCHMEYER PAUL H., 1955, TRANS AMER FISH SOC, V84, P47, DOI 10.1577/1548-8659(1954)84[47:TROLTI]2.0.CO
[10]  
2