Author: Roger John Glass
Publisher:
ISBN:
Category : Aquaculture
Languages : en
Pages : 128
Book Description
The Optimum Loading and Density for Yellow Perch (Perca Flavescens) Raised in a Single Pass, Flow-through System
Author: Roger John Glass
Publisher:
ISBN:
Category : Aquaculture
Languages : en
Pages : 128
Book Description
Publisher:
ISBN:
Category : Aquaculture
Languages : en
Pages : 128
Book Description
The Optimal Protein
Author: Laurel J. Ramseyer
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 244
Book Description
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 244
Book Description
Continuous Loading-multiple Size Cohort Management Versus Single-size Cohort Management in the Culturing of Yellow Perch (Perca Flavescsens)
Author: Steven Daniel Hart
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 164
Book Description
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 164
Book Description
Temperature Effects on Young Yellow Perch, Perca Flavescens (Mitchill)
Author: J. Howard McCormick
Publisher:
ISBN:
Category : Perch
Languages : en
Pages : 30
Book Description
Publisher:
ISBN:
Category : Perch
Languages : en
Pages : 30
Book Description
Growth of yellow perch (Perca flavescens) as a function of density within the aquacultural setting
Author: Thomas W. Coote
Publisher:
ISBN:
Category : Aquaculture
Languages : en
Pages : 0
Book Description
Publisher:
ISBN:
Category : Aquaculture
Languages : en
Pages : 0
Book Description
Modeling Yellow Perch (Perca Flavescens) Abundance in Inner Saginaw Bay, Lake Huron, 1971-2001
Author: Sarah Ann Thayer
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 212
Book Description
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 212
Book Description
Provisional Agenda for the 1st Meeting, to be Held at the National Institute of Environmental Health, Budapest, Starting on Monday, 14 May 2001
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 7
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 7
Book Description
Physiological Compensation to the Environment in a Population of Yellow Perch (Perca Flavescens) from a Naturally Acidic Lake
Author: Jay Arlen Nelson
Publisher:
ISBN:
Category :
Languages : en
Pages : 658
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 658
Book Description
Spatial and Temporal Variability in Post-larval Yellow Perch Density
Author: Steve Hauschildt
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 116
Book Description
"Yellow Perch Perca flavescens are important as forage for other species and for sport fishing in many northern lakes. However, estimating post-larval Yellow Perch populations can be difficult because of many environmental factors that cause unexplained variation. The objective of this study was to help reduce unexplained variation by determining a post-larval Yellow Perch population density estimate on Blackduck Lake, MN, provide guidance to help dete1mine the number of trawls required for trawling-based recruitment indices to achieve varying levels of precision, and test for the effects of wind speed and direction on post-larval Yellow Perch spatial variability. This study estimated a density of 0.45 fish/m3 (0.58 SD) during the sampling period (26 Jun - 07 Jul 2017). It was determined that between 10-15 trawls produced a precise density estimate; however, trawls should be taken over multiple days in varying wind speeds to avoid over/under estimation. Trawling should also be performed in-line with wind direction to ensure non-bias estimates are calculated from both upwind and downwind sectors. This study determined wind speed and direction had a significant influence on the distribution of post-larval Yellow Perch, as more fish were caught in the downwind sector until winds reached 15 kmph. At 15 kmph, fish densities were equal in the upwind and downwind sectors of the lake. Wind did not have a significant influence though on how post-larval Yellow Perch were distributed by total length. During high wind events, more fish were found in the upwind sector of the lake, suggesting that post¬larval fish are being moved laterally out of non-towable areas. From the results of this study it appears Yellow Perch must continually relocate back into shallow areas after each high wind event moves them out of the non-towable areas, until they are strong enough to resist the wind."-Abstract.
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 116
Book Description
"Yellow Perch Perca flavescens are important as forage for other species and for sport fishing in many northern lakes. However, estimating post-larval Yellow Perch populations can be difficult because of many environmental factors that cause unexplained variation. The objective of this study was to help reduce unexplained variation by determining a post-larval Yellow Perch population density estimate on Blackduck Lake, MN, provide guidance to help dete1mine the number of trawls required for trawling-based recruitment indices to achieve varying levels of precision, and test for the effects of wind speed and direction on post-larval Yellow Perch spatial variability. This study estimated a density of 0.45 fish/m3 (0.58 SD) during the sampling period (26 Jun - 07 Jul 2017). It was determined that between 10-15 trawls produced a precise density estimate; however, trawls should be taken over multiple days in varying wind speeds to avoid over/under estimation. Trawling should also be performed in-line with wind direction to ensure non-bias estimates are calculated from both upwind and downwind sectors. This study determined wind speed and direction had a significant influence on the distribution of post-larval Yellow Perch, as more fish were caught in the downwind sector until winds reached 15 kmph. At 15 kmph, fish densities were equal in the upwind and downwind sectors of the lake. Wind did not have a significant influence though on how post-larval Yellow Perch were distributed by total length. During high wind events, more fish were found in the upwind sector of the lake, suggesting that post¬larval fish are being moved laterally out of non-towable areas. From the results of this study it appears Yellow Perch must continually relocate back into shallow areas after each high wind event moves them out of the non-towable areas, until they are strong enough to resist the wind."-Abstract.
Food Requirements for Optimal Growth and Survival of Larval Yellow Perch (perca Flavescens) Through the Critical Period
Author: Justin C. Johnston
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 132
Book Description
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 132
Book Description