Browsing by Subject "fisheries"

Now showing 1 - 4 of 4
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    Data and code in support of: Release of live baitfish by recreational anglers drives fish pathogen introduction risk
    (2022-06-06) McEachran, Margaret C.; Phelps, Nicholas B. D.; Drake, D. Andrew R.; Mladonicky, Janice M.; Picasso, Catalina; thom4412@umn.edu; McEachran, Margaret; University of Minnesota Department of Fisheries, Wildlife and Conservation Biology; University of Minnesota Department of Veterinary Population Medicine; University of Minnesota Gabbert Raptor Center; Fisheries and Oceans Canada Great Lakes Research Laboratory
    This repository contains supplementary information, simulation data, and R computer code to accompany the manuscript titled "Release of live baitfish by recreaional anglers drives fish pathogen introduction risk." The purpose of this project was to quantify the risk of fish pathogen introduction, conceptualized as the number of fish infected with a priority pathogen released in a given year of fishing, under a range of conditions.
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    Data in Support of Predicting climate change impacts on poikilotherms using physiologically guided species abundance models
    (2022-07-14) Schliep, Erin M; North, Joshua S; Kundel, Holly; Custer, Christopher A; Ruzich, Jenna K; Hansen, Gretchen J A; ghansen@umn.edu; Hansen, Gretchen J A; University of Minnesota Dr. Hansen Research Team
    Fish catch and effort data for three species caught in gill nets and trap nets between 1988 and 2019 as part of Minnesota Department of Natural Resources (MNDNR) fisheries surveys conducted during the summer and early fall are included from over 1,300 Minnesota lakes. The three fish species included are: bluegill (Lepomis marochirus) a warm-water adapted species, yellow perch (Perca flavescens) a cool-water adapted species, and cisco (Coregonus artedi) a cold-water adapted species. Additional data concerning lake characteristics and surrounding land cover were also included. Mean July lake surface temperature was calculated using simulated daily water temperatures. Watershed land use including agricultural, barren, forest, grass, shrub, urban, and wetland cover, was determined using the 2016 National Land Cover Database. Secchi, a measure of water clarity was calculated from remotely sensed Secchi depth courtesy of Max Glines. Lastly, lake area and maximum depth were obtained from MNDNR public databases.
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    Department of Entomology, Fisheries and Wildlife, 1888-1974
    (University of Minnesota, 1976) Hodson, A. C. (Alexander Carlton), 1906-1996
    A chronological and somewhat anecdotal history of the Department of Entomology, Fisheries and Wildlife written by A. C. Hodson, who was Head of the Department from 1960-1974.
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    Predicting the Impacts of Heterosporis sutherlandae on the Yield of a Yellow Perch Population: An Integrated Modeling Approach
    (2018-01) Tomamichel, Megan
    Heterosporosis a disease caused by a microsporidian parasite, Heterosporis sutherlandae, and can result in lesions in the host muscle tissue. I developed a stochastic, cohort-based integrated disease model to predict the impacts of this parasite on a yellow perch (Perca flavescens) population. I addressed if heterosporosis can cause large losses of yield and which factors are most important to yield. I conducted field and laboratory work to parameterize my model. I found that heterosporosis was rare in all field sites and sampling seasons (6% average prevalence). Transmission by feeding infected tissue ranged between 23% and 31%, while only 2% of minnows exposed by near direct contact became infected. My model indicates that heterosporosis may become extinct in Leech Lake in 25 years, is unlikely to cause significant losses of yield, and that yield is more sensitive to bioenergetic parameters (183% change in yield) than to disease (<1% change in yield).