Evaluating The Condition Of Age-0 Burbot In Relation To Diet,
2025
Bemidji State University
Evaluating The Condition Of Age-0 Burbot In Relation To Diet, Cian Verbridge
Journal of Earth and Life Science
Burbot are becoming more and more popular for angling and aquaculture. However, populations have been declining across the world. Very little information is available about their early life and their interactions in the ecosystem due to challenges in sampling. Condition estimates and diet metrics were used to better understand the status of burbot in Lake Bemidji. Using backpack electrofishing, 45 young of the year burbot were collected. The lengths ranged from 86 to 146 mm and the wet weights ranged from 4.29 to 24.36 g. The stomach contents were removed and stored in ethanol for later analysis. The burbot were …
Modeling Wild Rice Bed Health: A Dual Metric Approach For Bed Strength And Invasive Impact,
2025
Bemidji State University
Modeling Wild Rice Bed Health: A Dual Metric Approach For Bed Strength And Invasive Impact, Seth Sisneros-Martinez
Journal of Earth and Life Science
Wild rice (mannoomin; Zizania palustris) is an aquatic grain that grows in slow-moving rivers and shallow bays throughout northern Minnesota. In Headquarters Bay on Leech Lake, wild rice has served as a cultural staple for Indigenous communities for centuries. However, its population has declined in recent years due to multiple environmental issues. One potential contributor is Eurasian watermilfoil (Myriophyllum spicatum; EWM), an invasive species that forms dense mats capable of outcompeting native aquatic vegetation, including wild rice. EWM was first recorded on the southern shoreline of Leech Lake in 2005 and has since become widespread. This study …
The Effect Of Zebra Mussels On Minnesota Fish Communities,
2025
Bemidji State University
The Effect Of Zebra Mussels On Minnesota Fish Communities, Benjamin D. Strei
Journal of Earth and Life Science
Zebra mussels Dreissena polymorpha are an aquatic invasive species that has been spreading quickly throughout Minnesota water bodies since 1989. Zebra mussels are known to change certain morphological conditions in lakes such as turbidity, phytoplankton abundance, and aquatic invertebrate populations. However, studies showing impacts of the infestation of zebra mussels on the health of a fish community have been hard to prove due to a lack of repeated surveys and a suite of other confounding variables such as natural and seasonal variability, plant community, and lake morphometry. Therefore, the objective of this study is to determine whether zebra mussels have …
Movement And Activity Of Burbot, (Mizay; Lota Lota) In A Spring-Fed Minnesota Lake,
2025
Bemidji State University
Movement And Activity Of Burbot, (Mizay; Lota Lota) In A Spring-Fed Minnesota Lake, Abigail M. Fountain
Biology Graduate Theses
Burbot (Mizay; Lota lota) are a relatively unmanaged freshwater fish, important in many local Indigenous cultures, but often overlooked or maltreated in research, conservation, and fishing practices. As such, relatively little research has been conducted on Burbot, despite ecological significance as an indicator species. A recent resurgence in popularity as a target species, however, has prompted new research to inform management policies. The objectives of this study were to summarize Burbot movement by identifying patterns in swimming activity and identify possible predictors of the movement observed. This study investigated the movements of 39 individuals implanted with acoustic transmitters in Bad …
Size Of Age-0 Sander Vitreus Pre And Post Dreissena Polymorpha Infestation On Brainerd And Bemidji Area Lakes,
2025
Bemidji State University
Size Of Age-0 Sander Vitreus Pre And Post Dreissena Polymorpha Infestation On Brainerd And Bemidji Area Lakes, Quady Bernu
Journal of Earth and Life Science
Walleye Sander vitreus is the Minnesota state fish and a vital predator fish in lake ecology. Zebra mussels, Dreissena polymorpha were first found in Minnesota inland lakes in the 1980’s. These mussels have had huge impacts on water clarity as well as phytoplankton and zooplankton population levels which affect how age-0 fish feed, especially a low light feeding predator fish like walleye. A study took place on age-0 walleye size and it supported the conclusion that age-0 walleye were negatively impacted by zebra mussels in Minnesota’s large lakes. The goals of this study were to determine how the size of …
Microsatellites Reveal The Population Genetic Structure Of Yellow Perch In Minnesota,
2025
Bemidji State University
Microsatellites Reveal The Population Genetic Structure Of Yellow Perch In Minnesota, Megan Boche
Journal of Earth and Life Science
When analyzing a population’s genetic makeup, looking at variation of individuals and populations is a crucial factor. The management of yellow perch will be aided by this information particularly in regard to stocking or relocation. Microsatellite loci were used to analyze the genetic population structure of yellow perch Perca flavescens within and among 29 sampling areas throughout Minnesota’s basins. Seven microsatellite DNA loci were evaluated, with heterozygosities ranging from 0.41 to 0.78. The Lower Mississippi basin samples showed higher numbers of alleles per locus and greater expected heterozygosities compared to other basins, with Lake Pepin (PEP) exhibiting the highest average …
Marine Heatwave Response Plan For Western Australia’S Wild Capture Fisheries And Aquaculture,
2025
Department of Primary Industries and Regional Development, Western Australia
Marine Heatwave Response Plan For Western Australia’S Wild Capture Fisheries And Aquaculture, Department Of Primary Industries And Regional Development, Western Australia
Fisheries Management Papers
The purpose of the Western Australian wild capture fisheries and aquaculture marine heatwave response plan (the Plan) is to document the Department’s approach for identifying and responding to the hazard of a marine heatwave on wild catch fisheries (commercial, recreational, charter and customary) and aquaculture resources within the geographic boundaries of WA. It provides risk reduction strategies and establishes best-practice processes for each stage of the hazard management and response continuum, ensuring that DPIRD is able to adequately prepare for, respond to, and recover from marine heatwave events. This Plan operates in conjunction with WA’s existing aquatic resource management framework, …
The Effect Of Bait Types On Catch Performance In The Vietnamese Swimming Crab Trap Fishery,
2025
Nha Trang University, 2 Nguyen Dinh Chieu, Nha Trang City, Vietnam
The Effect Of Bait Types On Catch Performance In The Vietnamese Swimming Crab Trap Fishery, Nghiep K. Vu, Khanh Q. Nguyen, Luong T. Nguyen
Journal of Marine Science and Technology–Taiwan
Trapping is a primary fishing method to capture swimming crab species along the coast of Vietnam, because it has low ecological and environmental impacts. In trap fisheries, bait plays a primary role in determining the effectiveness of the gear and is one of the largest operational costs. Fishermen determine bait types based on their experience and what they can find, where trash fish caught by trawl fisheries is preferred and commonly used. However, the catch rates of swimming crab traps are typically low and highly variable and thus, there is considerable interest to improve the catchability. This study examined the …
Habitat Use And Selection Of Silver Carp In The Lower Wabash River System,
2025
Eastern Illinois University
Habitat Use And Selection Of Silver Carp In The Lower Wabash River System, Coy B. Blair
Masters Theses
The spatial ecology of non-native species in invaded systems remains relatively poorly understood despite the importance of suitable habitat in the success of invasion. Silver Carp Hypophthalmichthys molitrix are a highly invasive non-native species with established populations throughout the Midwestern United States. Much research has focused on habitat use of bigheaded carp in large river systems, though invasion risk remains high in smaller systems, such as tributaries of the Great Lakes and the Ohio River. The Wabash River, a unique system in the Midwest, remains largely un-impounded and is comparable to many of the smaller riverine systems at risk of …
Tailwater Trout Population Dynamics,
2025
Missouri State University
Tailwater Trout Population Dynamics, Connor Dylan Cunningham
Graduate Theses/Dissertations
Dams have been constructed throughout the world and provide several resources for humans (e.g., flood control, hydropower). These structures heavily alter the upstream and downstream environment. One consequence of these alterations is the creation of “tailwaters”, which can create cold-water habitat via hypolimnetic releases. In the southeast United States these tailwater environments are often managed for the recreational use of nonnative salmonids. The unnatural flow regimes of tailwaters affect the biotic and abiotic conditions and ultimately the dynamic rate functions (i.e., recruitment, growth, mortality) of the fish inhabiting them. As such, the goal of this research is to provide fisheries …
Integrating Invasion Risk And Habitat Suitability To Guide Invasive Species Management In Wetlands, Lakes, And Rivers,
2025
South Dakota State University
Integrating Invasion Risk And Habitat Suitability To Guide Invasive Species Management In Wetlands, Lakes, And Rivers, Brenden M. Elwer
Electronic Theses and Dissertations
Invasive species disrupt ecosystems by altering habitats, competing with native species, and disrupting food webs. The northern Great Plains is an ecologically important region with many wetlands, lakes, and rivers that are under threat from two invasive species, Bighead (Hypophthalmichthys nobilis) and Silver Carp (H. molitrix; bigheaded carp). These large planktivores change the abundance and composition of phytoplankton and zooplankton communities which alters prey for native mussels, fishes, and, potentially, waterfowl. Bigheaded carps have invaded a portion of the Northern Great Plains, and preventing further spread is a primary management goal. My work assists these efforts by providing tools to …
Adaptation For Whom? Understanding The Impacts Of Dyke Policies On Small-Scale Farmers In Ca Mau Province Of Vietnam,
2025
Can Tho University
Adaptation For Whom? Understanding The Impacts Of Dyke Policies On Small-Scale Farmers In Ca Mau Province Of Vietnam, Nguyen Minh Quang, Nguyen Van Minh, Nguyen Vo Chau Ngan, Martha B. Lerski
Publications and Research
Low-lying deltas worldwide are extremely vulnerable to sea-level rise. As the risks of climate-induced flooding become increasingly clear, the thirst for infrastructure-driven adaptation increases. This highlights a patent need to understand the impacts of engineering adaptation solutions, especially those targeting built structures such as dykes and sluices, on farmers from a bottom-up, farmer-centred perspective. The study addresses this call by examining cases where dyke policies, while successful in some dimensions, have undermined small-scale farmer livelihoods in Ca Mau ― Vietnam’s southernmost rural province. It identifies areas in need of attention and adds empirical data related to this group of farmers. …
Identifying Intangible And Biocultural Heritage Elements Toward Environmental Understanding: Engaging Stakeholders Through Art,
2025
CUNY Lehman College
Identifying Intangible And Biocultural Heritage Elements Toward Environmental Understanding: Engaging Stakeholders Through Art, Martha B. Lerski
Publications and Research
Grounded in a case study in Barbuda in the Caribbean, this research examines sustainability from the perspective of what arts and heritage can contribute to community engagement and local and broader understandings about the environment. This article documents a growing body of literature recognizing the role of arts and culture, including local knowledge and traditional ecological knowledge (TEK), in climate change endeavors. Art and TEK present expansive world views. Contextual information situates research done on the island of Barbuda pre- and post-Hurricane Irma. Visual arts workshops engaged community members in mixed methods research. Results documented cultural elements, particularly intangible and …
Noaa Oceanic And Atmospheric Research Ocean Carbon Observing Science Plan Fy25 To Fy35,
2025
University of Nebraska - Lincoln
Noaa Oceanic And Atmospheric Research Ocean Carbon Observing Science Plan Fy25 To Fy35, United States National Oceanographic And Atmospheric Administration
National Oceanographic and Atmospheric Administration: Technical Reports and Related Materials
United States National Oceanographic and Atmospheric Administration oceanic and atmospheric research ocean carbon observing science plan for fiscal years 2025 through 2035.
Effects Of Insect Meals On Fish Digestibility, Blood Parameters, And Economic Performance: A Meta-Analysis,
2025
WorldFish
Effects Of Insect Meals On Fish Digestibility, Blood Parameters, And Economic Performance: A Meta-Analysis, M. A. Aaqillah-Amr, A. Hidir, M. Ikhwanuddin, N. A. Fatan, R. Muhammad-Rahimi, S. Ning-Shahira, R. G.N. Siankhe, G. W. Vandenberg, C. M. Tanga, R. Yossa
All Peer-Reviewed Publications
This review examines the use of insect meal (IM) as a substitute for fishmeal (FM) in fish feeds within the past decade. While global interest in this alternative is growing, research on its effects on fish digestibility, blood parameters, and economic performance has been limited. Meta-analysis on the apparent digestibility coefficient revealed a negative effect summary on dry matter (0.92) and crude lipid (0.51), although the difference between the two groups was relatively minor. However, a positive effect summary was reported in the apparent digestibility of crude protein (0.12), suggesting a potential advantage in the utilization of protein by fish …
Fisheries Research Report No. 345: Metropolitan Monitoring Program 2024,
2025
Department of Primary Industries and Regional Development, Western Australia
Fisheries Research Report No. 345: Metropolitan Monitoring Program 2024, Alissa C. Tate, Claire B. Smallwood, Karina L. Ryan
Fisheries Research Reports
Ongoing monitoring of recreational fisheries in the Metropolitan zone is essential to ensure the sustainable use of fisheries resources. Surveys of shore- and boat-based recreational fishers within the Metropolitan zone of the West Coast bioregion provide information on human dimensions and catch-per-fisher as well as mean length and weight of key recreationally caught species. For shore-based fishers, estimates of fishing effort, catch and harvest are also presented for key nearshore species. Information in this report is used to support ongoing assessments for key nearshore species and inform the development and evaluation of harvest strategies and other management actions, such as …
New Observations Of Common Snook, Centropomus Undecimalis, In Mississippi Coastal Waters, With A Summary Of Local Records,
2025
University of Southern Mississippi
New Observations Of Common Snook, Centropomus Undecimalis, In Mississippi Coastal Waters, With A Summary Of Local Records, Tiffany A. Weidner, William C. Tilley, Brooke Doucet, Angelos Apeitos, Eric A. Saillant, James S. Franks, Jeremy M. Higgs
Gulf and Caribbean Research
No abstract provided.
Evaluating The Chemical Reactivity Of Wildfire-Derived Dissolved Organic Molecules: Glutathione Binding Through Kendrick Mass Defect Analysis,
2025
Old Dominion University
Evaluating The Chemical Reactivity Of Wildfire-Derived Dissolved Organic Molecules: Glutathione Binding Through Kendrick Mass Defect Analysis, Hannah M. Hamontree, Patrick G. Hatcher
Chemistry & Biochemistry Faculty Publications
The emerging risks to organisms of pyrogenic-derived dissolved organic matter (PyDOM) from forest fires are of concern due to its toxic and mutagenic potential (e.g., pro-oxidative responses in fauna through the depletion of glutathione, a nitrogen- and sulfur-containing tripeptide found in cells). This study simulates this phenomenon in a laboratory setting by identifying bonding between reduced l-glutathione and organic molecules in leachates from environmentally weathered biomass samples (charred and uncharred) using Kendrick Mass Defect (KMD) analysis from formula lists obtained from negative-mode electrospray ionization-Fourier transform-ion cyclotron resonance-mass spectrometry ((-)ESI-FT-ICR-MS). These formula lists reveal a 10-fold increase in nitrogen- and sulfur-containing …
Cellular Responses Of Astrangia Poculata (Ellis And Solander, 1786) And Its Symbiont To Experimental Heat Stress,
2025
Grand Valley State University
Cellular Responses Of Astrangia Poculata (Ellis And Solander, 1786) And Its Symbiont To Experimental Heat Stress, Tyler E. Harman, Daniel Barshis, Briana Hauff Salas, Kevin B. Strychar
Biological Sciences Faculty Publications
Climate change has had devastating effects on tropical coral reefs; however, much less is known regarding how heat stress affects temperate coral. This research focuses on Astrangia poculata (Ellis and Solander, 1786) collected from Narragansett Bay, RI, during the summer and winter seasons and understanding the effect of experimental thermal extremes (i.e., 26 °C) on seasonally different populations. Photosynthetic efficiency (Fv/Fm), symbiont density (via an inverse relationship with pixel intensity), and oxidative stress via reactive oxygen species (ROS) concentrations were measured on symbiotic and aposymbiotic A. poculata. Higher Fv/Fm rates were observed in summer- vs. winter-collected corals (p ≤ …
Assemblage Structure Of Large Carnivorous Coral Reef Fishes At Shallow And Mesophotic Depths In Two Of The Largest And Most Isolated Marine Protected Areas In The Philippines,
2025
Stanford University
Assemblage Structure Of Large Carnivorous Coral Reef Fishes At Shallow And Mesophotic Depths In Two Of The Largest And Most Isolated Marine Protected Areas In The Philippines, Rene A. Abesamis, Mikaela L. Salvador, Ryan Murray, Kymry Delijero, Segundo F. Conales, Jean T. Utzurrum, Christopher E. Bird, David T. Gauthier
Biological Sciences Faculty Publications
Overfishing remains a threat to coral reef fishes globally, with large carnivores often the most vulnerable. Marine protected areas (MPAs) can restore fish populations and biodiversity, but their impact has been understudied in mesophotic coral ecosystems (MCEs – extensions of shallow reefs from 30 to 150 m). We analyzed baited remote underwater videos recorded in 2016 to investigate the assemblage structure of large carnivorous fishes at shallow (4–12 m) and mesophotic (45–96 m) depths in two of the largest and most isolated MPAs in the Philippines: Tubbataha Reefs Natural Park (TRNP), a fully no-take MPA enacted in 1988; and Cagayancillo, …
