Article
Fisheries
Dieter Koemle, Jurgen Meyerhoff, Robert Arlinghaus
Summary: The brackish lagoons around German island of Rugen are popular recreational fishing spots for pike. However, the pike stock is declining and conflicts between recreational and commercial fishers have emerged. To inform future fisheries management, this study aims to understand the preferences and reactions of German recreational pike fishers towards different harvest regulations and catch outcomes. The study found four distinct angler types with different preferences, but all types generally accepted more restrictive regulations for pike removals and preferred catch ambiguity over low catch probabilities. Most angler types showed diminishing marginal utility returns for catch rates, with a focus on size rather than catch rate. The study highlights the importance of maintaining catch rate and increasing the number of trophy pike in the stock to satisfy the expectations of most angler types.
FISHERIES RESEARCH
(2022)
Article
Fisheries
Brian R. Herwig, Kyle D. Zimmer, David F. Staples
Summary: Research indicates that there is little niche overlap between muskellunge and northern pike, while walleye overlaps more extensively with both muskellunge and northern pike. Muskellunge primarily feed on cisco, walleye mainly consume non-cisco prey fish, and northern pike have a diet dominated by non-cisco prey fish and invertebrates.
ECOLOGY OF FRESHWATER FISH
(2022)
Article
Fisheries
Michael J. Lant, Derek H. Ogle, Zachary S. Feiner, Greg G. Sass
Summary: This study examined angler travel patterns to lakes in Vilas County, Wisconsin and found that catch rates did not significantly differ among anglers from different areas. The results suggest that local knowledge may not be a reliable indicator of fishing trip success or catch rates, as technology and information sources may lead to homogenization of catch rates.
FISHERIES RESEARCH
(2022)
Article
Fisheries
Andrew J. Paul, Christopher L. Cahill, Laura MacPherson, Michael G. Sullivan, Myles R. Brown
Summary: Research in Alberta lakes has shown that increased Walleye populations may not necessarily have a negative impact on Northern Pike populations. While some studies suggest a negative relationship between the two species, the mechanism is unclear, and the impact is generally weak.
NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
(2021)
Article
Environmental Sciences
Tania Charette, Maikel Rosabal, Marc Amyot
Summary: The study identified associations between metals and muscle lipids and proteins, which could help explain changes in bioaccumulation patterns within fish and individuals, with potential implications for fish toxicology and human consumption guidelines.
Article
Environmental Sciences
Jason T. T. Magnuson, Mark B. B. Sandheinrich
Summary: This study examined the relationship between selenium (Se), methylmercury (MeHg), inorganic mercury (IHg), total mercury (THg), and the expression of biomarkers of oxidative stress and metal regulation in northern pike livers. The results showed a positive correlation between THg and Se concentrations, with a mercury:selenium molar ratio less than one. There was no significant relationship between biomarker expression and mercury:selenium molar ratios, except for catalase and superoxide dismutase, which were significantly related to the increase in MeHg concentration relative to THg.
Article
Environmental Sciences
Mehdi Moslemi-Aqdam, Leanne F. Baker, Jennifer L. Baltzer, Brian A. Branfireun, Marlene S. Evans, Brian D. Laird, George Low, Mike Low, Heidi K. Swanson
Summary: The concentrations of mercury in fish are influenced by complex biogeochemical and ecological interactions. These interactions have profound effects on fish mercury concentrations, particularly in northern latitudes. The study found that fish growth rates and concentrations of methylmercury in benthic invertebrates are important factors affecting mercury concentrations in Northern Pike. These variables are influenced by concentrations of dissolved organic carbon, methylmercury, and total mercury in lakes, which are ultimately driven by catchment characteristics.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Fisheries
Christopher M. Somers, Una Goncin, Shayna Hamilton, Michelle Chupik, Ryan Fisher
Summary: Catch-and-release ice angling is a popular recreational activity, but little is known about the postrelease behavior of fish in the winter. A study tracking Northern Pike in Buffalo Pound Lake, Saskatchewan, Canada found that despite cold water temperatures, the fish exhibited unexpected long-distance movements postrelease. Furthermore, postrelease behavior varied with fish size, with larger fish moving shorter distances initially compared to smaller fish.
NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
(2021)
Article
Forestry
Jacob J. Muller, Linda M. Nagel, Brian J. Palik
Summary: The ASCC project tested ecosystem-specific adaptation approaches, with the first trial conducted in 2014 in northern Minnesota, USA. The transition treatment showed relative success, reducing mortality, increasing structural diversity, and achieving a species composition adapted to future climates.
CANADIAN JOURNAL OF FOREST RESEARCH
(2021)
Article
Fisheries
Taku Yoshiyama, Jun-Ichi Tsuboi, Takashi Matsuishi
Summary: The study found that there is a close relationship between angler satisfaction and fish catch, with different types of anglers having different demands for different target species. Therefore, when formulating management strategies for fish resources, it is important to consider anglers' orientations and their needs for catch.
NIPPON SUISAN GAKKAISHI
(2021)
Article
Fisheries
Timo D. Rittweg, Clive Trueman, Elias Ehrlich, Michael Wiedenbeck, Robert Arlinghaus
Summary: Accurate age estimates are crucial for assessing fish life histories and providing management advice. This study validated age estimates for northern pike using oxygen isotopes and found that estimates from scales significantly underestimated the age of older fish. This underestimation has implications for population models and management regulations, leading to conservative management and lost yield.
FISHERIES MANAGEMENT AND ECOLOGY
(2023)
Article
Criminology & Penology
Robyn Lesley Richmond, Wei Hao Lee, Sophia Lin, James Henry Obol, Peter Akera, Gail Menezes, Fran Hyslop, Agnes Awor, Mike Shabiti Sevenska, Phillip Ojara, Amanzuru Geofrey Melik, Daniel Oceng, Lucy Acaye, Phiona Ayero, Ruth Ayeerwot, Rutuja Dandgaval, Emma Bence, Eleanor Black, Susan Clarke, Helen Fry, Heather Worth
Summary: IPV is a significant issue in northern Uganda, with high prevalence rates. Factors such as alcohol abuse, physical fights, and controlling behaviors contribute to IPV in rural areas, while economic empowerment appears to be a protective factor in urban areas.
JOURNAL OF INTERPERSONAL VIOLENCE
(2023)
Article
Psychiatry
Carmen H. Logie, Candice L. Lys, Nina Sokolovic, Kayley Inuksuk Mackay, Holly Donkers, Amanda Kanbari, Sherri Pooyak, Charlotte Loppie
Summary: Factors associated with depression among adolescents in the NWT include gender disparities, sexual orientation diversity, food insecurity, and dating violence. Tailored interventions focusing on these factors are needed to alleviate depression symptoms among adolescents in the NWT.
GLOBAL MENTAL HEALTH
(2021)
Article
Substance Abuse
Adam Palayew, Kelly Knudtson, Sue Purchase, Shayna Clark, Lucia Possehl, Elise Healy, Sarah Deutsch, Courtney A. A. McKnight, Don Des Jarlais, Sara N. N. Glick
Summary: Since 2019, there have been multiple HIV outbreaks among people who inject drugs (PWID) in Minnesota. Syringe service programs (SSPs) are effective in reducing HIV transmission. A survey was conducted to assess the characteristics, HIV risk, and prevention behaviors of clients of a mobile SSP in rural, northern Minnesota.
HARM REDUCTION JOURNAL
(2023)
Article
Ecology
Daniel Nsoh Akongyuure, Elliot Haruna Alhassan
Summary: This study assessed water quality parameters and their correlation with fish catch in the Tono Reservoir. The results showed that water quality parameters were within recommended range for fish production, with only chloride showing a significant positive correlation with catch per unit effort. It is recommended that the Ministry of Fisheries and Aquaculture Development monitor the reservoir water quality quarterly to ensure safe fish production.
JOURNAL OF FRESHWATER ECOLOGY
(2021)
