Lake trout spawning habitat suitability at two offshore reefs in Illinois waters of Lake Michigan

2017 ◽  
Vol 43 (2) ◽  
pp. 335-344 ◽  
Author(s):  
Rebecca Redman ◽  
Scudder Mackey ◽  
Joshua Dub ◽  
Sergiusz Czesny
Keyword(s):  
Habitat Suitability ◽  
Lake Michigan ◽  
Lake Trout ◽  
Spawning Habitat

Potential Spawning Habitat for Lake Trout on Julian's Reef, Lake Michigan

1996 ◽  
Vol 22 (1) ◽  
pp. 83-88 ◽  
Author(s):  
Thomas A. Edsall ◽  
Gregory W. Kennedy ◽  
William H. Horns
Keyword(s):  
Lake Michigan ◽  
Lake Trout ◽  
Spawning Habitat

Side-Scan Sonar Mapping of Lake Trout Spawning Habitat in Northern Lake Michigan

1989 ◽  
Vol 9 (3) ◽  
pp. 269-279 ◽  
Author(s):  
Thomas A. Edsall ◽  
Thomas P. Poe ◽  
Robert T. Nester ◽  
Charles L. Brown
Keyword(s):  
Lake Michigan ◽  
Lake Trout ◽  
Spawning Habitat ◽  
Side Scan Sonar

An examination of the PCB: lipid relationship among individual fish

1997 ◽  
Vol 54 (5) ◽  
pp. 1031-1038
Author(s):  
C A Stow ◽  
L J Jackson ◽  
J F Amrhein
Keyword(s):  
Salmo Trutta ◽  
Lake Michigan ◽  
Oncorhynchus Tshawytscha ◽  
Lake Trout ◽  
Coho Salmon ◽  
Salvelinus Namaycush ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Strong Linear Correlation ◽  
Brown Trout Salmo Trutta ◽  
The Relationship

We examined data from 1984 to 1994 for five species of Lake Michigan salmonids to explore the relationship between total PCB concentration and percent lipid. When we compared mean species lipid and PCB values, we found a strong linear correlation. When we compared values among individuals, we found modest positive PCB:lipid associations in brown trout (Salmo trutta), chinook salmon (Oncorhynchus tshawytscha), coho salmon (Oncorhynchus kisutch), and rainbow trout (Oncorhynchus mykiss) collected during spawning, but positive associations were not apparent among nonspawning individuals. Lake trout (Salvelinus namaycush) exhibited no discernible PCB:lipid relationship. Our results are not incompatible with previous observations that contaminants are differentially partitioned into lipids within a fish, but these results do suggest that lipids are not a major factor influencing contaminant uptake.

An Energetics Model for Lake Trout, Salvelinus namaycush: Application to the Lake Michigan Population

1983 ◽  
Vol 40 (6) ◽  
pp. 681-698 ◽  
Author(s):  
Donald J. Stewart ◽  
David Weininger ◽  
Donald V. Rottiers ◽  
Thomas A. Edsall
Keyword(s):  
Lake Michigan ◽  
Lake Trout ◽  
Salvelinus Namaycush ◽  
High Energy ◽  
Alosa Pseudoharengus ◽  
Fishing Mortality ◽  
Age Classes ◽  
Short Term ◽  
Conversion Efficiencies

An energetics model is implemented for lake trout, Salvelinus namaycush, and applied to the Lake Michigan population. It includes an egestion function allowing any proportional mix of fish and invertebrates in the diet, a growth model accounting for both ontogenetic and seasonal changes in energy-density of predator and prey, a model for typical in situ swimming speed, and reproductive energy losses due to gametes shed. Gross conversion efficiency of energy by lake trout over their life (21.8%) is about twice the efficiency of converting biomass to growth because they store large amounts of high-energy fats. Highest conversion efficiencies are obtained by relatively fast-growing individuals, and over half the annual energy assimilated by older age-classes may be shed as gametes. Sensitivity analysis indicates a general robustness of the model, especially for estimating consumption by fitting a known growth curve. Largest sensitivities were for the intercept and weight dependence coefficients of metabolism. Population biomass and associated predatory impact of a given cohort increase steadily for about 3.5 yr then decline steadily after fishing mortality becomes important in the fourth year in the lake. This slow response time precludes manipulation of lake trout stocking densities as a means to control short-term prey fluctuations. Predation by lake trout on alewife, Alosa pseudoharengus, has been increasing steadily since 1965 to about 8 400 t∙yr−1, and is projected to rise to almost 12 000 t∙yr−1 by 1990.

Evidence of lake trout (Salvelinus namaycush) spawning and spawning habitat use in the Dog River, Lake Superior

2018 ◽  
Vol 44 (5) ◽  
pp. 1117-1122 ◽  
Author(s):  
Nicholas E. Jones ◽  
Michael Parna ◽  
Sarah Parna ◽  
Steve Chong
Keyword(s):  
Habitat Use ◽  
Lake Trout ◽  
Lake Superior ◽  
Salvelinus Namaycush ◽  
Spawning Habitat

Muskellunge Management: Fifty Years of Cooperation Among Anglers, Scientists, and Fisheries Biologists

2017 ◽  
Keyword(s):  
Aquatic Vegetation ◽  
Lake Michigan ◽  
Radio Telemetry ◽  
Habitat Preferences ◽  
Vegetation Coverage ◽  
Limiting Factor ◽  
Suitable Habitat ◽  
Spawning Habitat ◽  
Green Bay ◽  
Natural Reproduction

<em>Abstract</em>.—The identification, protection, and restoration of spawning habitat for Muskellunge <em>Esox masquinongy </em>in Green Bay, Lake Michigan are vital steps for re-establishing a self-sustaining population. This study was designed to locate spawning areas, document and model spawning habitat preferences, assess natural recruitment, and determine if suitable habitat was found throughout Green Bay (Fox River, lower Green Bay, Menominee River, and Little Sturgeon Bay). Radio transmitters were inserted into the oviduct of mature female Muskellunge prior to spawning and expelled transmitters were later located using radio telemetry to identify spawning locations. Between 2009 and 2010, 26 of 37 (70%) implanted transmitters were located as deposited at spawning locations. Using identified spawning locations, habitat selection was estimated for key environmental variables, and MaxEnt (maximum entropy) was utilized to model Muskellunge spawning habitat in the Menominee River, as it was the only study area where natural reproduction was documented. Menominee River Muskellunge showed significant preferences for spawning in areas with shallow bottom slopes (5%), with medium-to-high submerged aquatic vegetation coverage (>33%), where coarse woody debris was present, and where dominant substrates were sand or cobble. MaxEnt modeling predicted a ~2.5 magnitude greater likelihood of spawning at an average spawning location compared to an average background location. Comparisons of available habitat among study areas showed the Menominee River contained more spawning habitat with preferred characteristics. Results from this study are important steps in identifying spawning habitat as a potential limiting factor to successful Muskellunge reintroduction and models could be used to locate suitable areas to stock and guide delineation of critical spawning habitat to designate for protection.

Factors Affecting Postrelease Survival of Coded‐Wire‐Tagged Lake Trout in Lake Michigan at Four Historical Spawning Locations

2019 ◽  
Vol 39 (5) ◽  
pp. 868-895 ◽  
Author(s):  
Matthew S. Kornis ◽  
Charles R. Bronte ◽  
Mark E. Holey ◽  
S. Dale Hanson ◽  
Theodore J. Treska ◽  
...  
Keyword(s):  
Lake Michigan ◽  
Lake Trout ◽  
Factors Affecting

Modelling Atlantic mackerel spawning habitat suitability and its future distribution in the north‐west Atlantic

2019 ◽  
Vol 29 (1) ◽  
pp. 84-99
Author(s):  
Baye Mbaye ◽  
Thomas Doniol‐Valcroze ◽  
Pablo Brosset ◽  
Martin Castonguay ◽  
Elisabeth Van Beveren ◽  
...  
Keyword(s):  
Habitat Suitability ◽  
Spawning Habitat ◽  
North West ◽  
Atlantic Mackerel ◽  
The North

Evidence of Wild Juvenile Lake Trout Recruitment in Western Lake Michigan

2013 ◽  
Vol 33 (1) ◽  
pp. 186-191 ◽  
Author(s):  
S. Dale Hanson ◽  
Mark E. Holey ◽  
Ted J. Treska ◽  
Charles R. Bronte ◽  
Ted H. Eggebraaten
Keyword(s):  
Lake Michigan ◽  
Lake Trout ◽  
Western Lake
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