Life History of the Yellow Perch Perca Flavescens (Mitchill)
Author : Russell Everett Nelson
Publisher :
Page : 166 pages
File Size : 23,70 MB
Release : 1977
Category : Fishes
ISBN :
Author : Russell Everett Nelson
Publisher :
Page : 166 pages
File Size : 23,70 MB
Release : 1977
Category : Fishes
ISBN :
Author : Robert Joseph Toth
Publisher :
Page : 204 pages
File Size : 23,60 MB
Release : 1959
Category : Fishes
ISBN :
Author : Richard Lawrence Pycha
Publisher :
Page : 170 pages
File Size : 48,33 MB
Release : 1955
Category : Perch
ISBN :
Author : John Wilson Parsons
Publisher :
Page : 110 pages
File Size : 22,15 MB
Release : 1950
Category : Perch
ISBN :
Author : J. Howard McCormick
Publisher :
Page : 30 pages
File Size : 13,32 MB
Release : 1976
Category : Perch
ISBN :
Author : FRANK. JOBES
Publisher :
Page : 498 pages
File Size : 43,29 MB
Release : 1940
Category :
ISBN :
Author : David Allen Vogel
Publisher :
Page : 63 pages
File Size : 43,1 MB
Release : 1979
Category : Fish populations
ISBN :
Author : Rebecca Yuen Wah Ng
Publisher :
Page : 172 pages
File Size : 18,39 MB
Release : 2005
Category : Fish populations
ISBN :
"This study evaluates the life history responses of yellow perch to mass removal and the potential for population recovery. We removed approximately 94% of a perch population from Nepawin Lake, a 35 hectare oligotrophic lake in Algonquin Provincial Park, Ontario, as part of a study designed to enhance the recruitment success of brook trout. Several response variables were examined both before and after mass removal: (1) condition, which includes growth, diet and overall condition responses, and (2) reproduction, which includes size at maturity and fecundity. We examine the question of whether compensatory life history responses in the yellow perch will overcome brook trout predation leading to a reestablishment of a high density perch population. Results showed that prior to the manipulation, perch exhibited a narrow size distribution, high dietary overlap, and low condition, typifying a stunted population. After mass removal, the perch population remained in a narrow size distribution, exhibited decreased growth rates for older age classes, showed increased mean condition and increased consumption of zooplankton in all size classes. Perch also exhibited increased size at maturity and decreased fecundity immediately following the mass removal. A time lag is expected before compensatory recruitment is possible in the population, but it is likely that the perch will recover from the mass removal because of strong age 0+ and 1+ cohorts. However, stunting and bottlenecking may still occur in the population. Continued monitoring and management is necessary to observe further changes to the perch population dynamics in Nepawin Lake." --
Author : Roger Allen Bergstedt
Publisher :
Page : 144 pages
File Size : 28,38 MB
Release : 1977
Category :
ISBN :
Author : Edward Schneberger
Publisher :
Page : 168 pages
File Size : 40,57 MB
Release : 1933
Category : Fishes
ISBN :