Publications
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The freshwater mysid Mysis diluviana (Audzijonyte and Väinölä, 2005) (Mysida: Mysidae) consumes detritus in the presence of Daphnia (Cladocera: Daphniidae)
Freshwater mysids of the Mysis relicta group are omnivorous macroinvertebrates that form an important link between fishes and lower trophic levels in many north temperate to Arctic lakes, where they exhibit diel vertical migration (DVM) to exploit subsurface food-rich layers at night. Benthic food resources have been assumed to be less important for mysid diets than pelagic zooplankton. Studies ha
Authors
Jessica E. Griffin, Brian O'Malley, Jason D. Stockwell
Dynamics of lake trout production in the main basin of Lake Huron
To inform lake trout (Salvelinus namaycush) fishery management in Lake Huron that has undergone rapid ecosystem changes, we quantified lake trout production dynamics by coupling age-structured stock assessment and fish bioenergetics models. Our approach revealed the connection between piscivore production and prey consumption, included growth compensation to reproduction losses, and allowed compa
Authors
Ji X. He, James R. Bence, Charles P. Madenjian, Randall M. Claramunt
Applications of deep convolutional neural networks to predict length, circumference, and weight from mostly dewatered images of fish
Simple biometric data of fish aid fishery management tasks such as monitoring the structure of fish populations and regulating recreational harvest. While these data are foundational to fishery research and management, the collection of length and weight data through physical handling of the fish is challenging as it is time consuming for personnel and can be stressful for the fish. Recent advance
Authors
Nicholas Bravata, Dylan Kelly, Jesse Eickholt, Janine Bryan, Scott M. Miehls, Daniel Zielinski
Lake sturgeon (Acipenser fulvescens) spawn in the St. Marys River Rapids, Michigan
The St. Marys River connects Lake Superior to Lake Huron, comprising the international border between Michigan, United States, and Ontario, Canada. This Great Lakes connecting channel naturally encompasses various habitats including lakes, wetlands, islands, tributaries, side channels, and main channels. The St. Marys River Rapids are shallow rock areas with high flow velocities (>1 m/s) in the up
Authors
Edward F. Roseman, Eric John Adams, Robin L. DeBruyne, J. Gostiaux, H. Harrington, K. Kapuscinski, A. Moerke, C. Olds
Benthic habitat is an integral part of freshwater Mysis ecology
Diel vertical migration (DVM) is common in aquatic organisms. The trade‐off between reduced predation risk in deeper, darker waters during the day and increased foraging opportunities closer to the surface at night is a leading hypothesis for DVM behaviour.Diel vertical migration behaviour has dominated research and assessment frameworks for Mysis , an omnivorous mid‐trophic level macroinvertebrat
Authors
Jason D. Stockwell, Brian O'Malley, Sture Hansson, Rosie C Chapina, Lars G. Rudstam, Brian C. Weidel
Validation of the model-predicted spawning area of grass carp Ctenopharyngodon idella in the Sandusky River
Spawning of grass carp, Ctenopharyngodon idella, in the Great Lakes basin was verified when eight fertilized eggs were collected in the Sandusky River, a tributary to Lake Erie, in 2015. Using a fluvial drift model (FluEgg) and simulation modeling, researchers predicted the fertilization location for those eggs was 3.8 ± 1 km (95% credible interval, CI) downstream of Ballville Dam. In June 2018, s
Authors
Patrick Kočovský, Nicole R. King, Eric Weimer, Christine Mayer, Song S. Qian
Where you trap matters: Implications for integrated sea lamprey management
Barriers and pesticides have been used in streams to control sea lamprey in the Laurentian Great Lakes for nearly 70 years. Considerable effort has been spent to develop additional control measures, but much less effort has gone toward identifying how or where additional control measures might be cost-effectively integrated into the sea lamprey control program. We use a management strategy evaluat
Authors
Scott M. Miehls, Heather Dawson, Alex Maguffee, Nicholas S. Johnson, Michael Jones, Norine Dobiesz
Does fecundity of cisco vary in the Upper Great Lakes?
Fecundity of fish is influenced by several factors, including body length, condition, population density, and environmental conditions. It follows that fecundity of fish populations can exhibit spatiotemporal variability; thus, periodic quantification of length–fecundity relationships is important for management. We hypothesized that average fecundity of Cisco Coregonus artedi in the upper Laurent
Authors
Daniel Yule, Jamie A. Dobosenski, Jared T. Myers, Mark Ebener, Randall M. Claramunt, James E. McKenna, H. George Ketola, Owen T. Gorman
Hypoxia augments edge effects of water column stratification on fish distribution
Hypoxic conditions in both freshwater and marine habitats have a significant effect on the distribution of fish in the water column, resulting in some fishes aggregating near the edges of the hypoxic zone. These aggregations may increase fish susceptibility to fishing gears, with attendant effects on stock assessment inferences. We investigated how hypoxic conditions influenced catch rates of yell
Authors
Derek W. Chamberlin, Carey Knight, Richard Kraus, Ann Marie Gorman, Wenzhao Xu, Paris D. Collingsworth
A synthesis of the biology and ecology of sculpin species in the Laurentian Great Lakes and implications for the adaptive capacity of the benthic ecosystem
The Laurentian Great Lakes have experienced recent ecosystem changes that could lead to reductions in adaptive capacity and ultimately a loss of biodiversity and production throughout the food web. Observed changes in Great Lakes benthic communities include declines of native species and widespread success of invasive species like dreissenid mussels in all but Lake Superior. Understanding the ecol
Authors
Kelly F. Robinson, Charles R. Bronte, David Bunnell, Peter T. Euclide, Darryl W. Hondorp, John J. Janssen, Matthew S. Kornis, Derek H. Ogle, Will Otte, Stephen Riley, Mark Vinson, Shea L. Volkel, Brian C. Weidel
A century of intermittent eco‐evolutionary feedbacks resulted in novel trait combinations in invasive Great Lakes alewives (Alosa pseudoharengus)
Species introductions provide opportunities to quantify rates and patterns of evolutionary change in response to novel environments. Alewives (Alosa pseudoharengus) are native to the East Coast of North America where they ascend coastal rivers to spawn in lakes and then return to the ocean. Some populations have become landlocked within the last 350 years and diverged phenotypically from their anc
Authors
Shelby Smith, Eric Palkovacs, Brian C. Weidel, David Bunnell, Andrew W. Jones, Devin Bloom
Gut contents from multiple morphs of lake trout (Salvelinus namaycush) at two offshore shoals in Lake Superior
Four lake trout, Salvelinus namaycush, Walbaum 1792 morphs occur in Lake Superior: lean, siscowet, humper, and redfin. Diets of lean and siscowet have been relatively well described. However, less is known about diets of humper and redfin, and overall few studies have been conducted at offshore shoals. We compared gut content data among mature (357–867 mm) sympatric lake trout morphs caught at two
Authors
Mark Vinson, John P. Hoffmann, A. M. Muir, Caroline Lynn Rosinski, C. C. Krueger, C.R. Bronte, M.J. Hansen, S. P. Sitar, Allen E. W., L.F. Baker, H. Swanson