1,721,027 research outputs found
Data and code in support of: Release of live baitfish by recreational anglers drives fish pathogen introduction risk
No full textThis 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.Minnesota Environment and Natural Resources Trust FundMinnesota Aquatic Invasive Species Research CenterMcEachran, Margaret C.; Phelps, Nicholas B. D.; Drake, D. Andrew R.; Mladonicky, Janice M.; Picasso, Catalina. (2022). Data and code in support of: Release of live baitfish by recreational anglers drives fish pathogen introduction risk. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://doi.org/10.13020/g22a-ty37
Carp Edema Virus Host Range Study in Lake Swartout and Outbreaks in four other lakes
No full textThis data set includes qPCR data for several species of fish from a lake with an outbreak of CEV in 2019 as well as qPCR data from carp from the same lake and from four other lakes.Mass mortality events of common carp (Cyprinus carpio, carp) associated with carp edema virus (CEV) alone or in coinfections with koi herpesvirus (KHV), is an emerging issue. Despite recent outbreaks of CEV in wild carp populations, the host range of North American species has not been well studied. To that end, we intensively sampled carp (n = 106) and co-habiting native fish species (n = 5 species; n = 156 total fish) from a CEV-suspect mass-mortality event of carp in a small Minnesota lake (Lake Swartout). Additionally, fecal and regurgitant samples (n = 73 each) from double-crested cormorants (Phalacrocorax auritus, DCCO) were sampled to test the potential of DCCO to act as a vector for virus transmission. CEV was confirmed to be widespread in the Lake Swartout carp population during the outbreak with high viral loads and histological confirmation, suggesting that CEV was the cause of the mortality event. There were no detections of CEV in any native fish species; however, DCCO regurgitant and fecal samples were positive for CEV DNA. In addition, three CEV-positive and one CEV+KHV-positive mortality events were confirmed with no observed mortality or morbidity of non-carp species in other lakes. This study provides evidence that CEV infection and disease may be specific to carp during mortality events with mixed-species populations, identifies DCCO as a potential vector for CEV, and further expands the known range of CEV, as well as coinfections with KHV, in North America.This research was funded by the Environment and Natural Resource Trust Fund, as recommended by the Minnesota Aquatic Invasive Species Research Center, and state of Minnesota.Tolo, Isaiah; Phelps, Nicholas. (2021). Carp Edema Virus Host Range Study in Lake Swartout and Outbreaks in four other lakes. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://doi.org/10.13020/2gcq-pt83
KHV disease data from wild Cyprinus carpio from Lake Elysian (Le Seuer, MN) and cohabitation disease trial of Cyprinus carpio, Pimephales promelas and Carassius auratus
No full textThis data set includes
1: Disease and demographic data of wild carp (C. carpio) captured from Lake Elysian in 2019
2: Disease data of disease-free carp (C. carpio), fathead minnows (P. promelas), and goldfish (C. auratus), experimentally exposed to koi herpesvirusKoi herpesvirus (KHV) is an important pathogen worldwide and a common cause of mass mortality events of wild common carp (Cyprinus carpio) in North America, however reference strains and genomes obtained from wild carp are not available. Additionally, it is unclear if fishes native to North America are susceptible to KHV infection due to incomplete susceptibility testing. Here we present the first North American type strain and whole genome sequence of KHV isolated from wild carp collected from a lake with history and recent incidence of carp mortality. Additionally, the strain was used in an in-vivo infection model to test the susceptibility of a common native minnow (Pimephales promelas) and goldfish (Carrasius auratus) which is invasive in North America. Detection of KHV DNA was confirmed in the tissues of a single fathead minnow but the same tissues were negative for KHV mRNA and samples from exposed fathead minnows were negative on cell culture. There was no detection of KHV DNA or mRNA in goldfish throughout the experiment. KHV DNA in carp tissues was reproducibly accompanied by detection of KHV mRNA and isolation on cell culture. Additionally, environmental KHV DNA was detected on all tank filters during the study. These findings suggest that fathead minnows and goldfish are not susceptible to KHV infection and that detection of KHV DNA alone in host susceptibility trials should be interpreted with cautionFunding for this study was provided by the Environment and Natural Resource Trust Fund, as recommended by the Minnesota Aquatic Invasive Species Research Center, and the State of MinnesotaTolo, Isaiah; Phelps, Nicholas. (2020). KHV disease data from wild Cyprinus carpio from Lake Elysian (Le Seuer, MN) and cohabitation disease trial of Cyprinus carpio, Pimephales promelas and Carassius auratus. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://hdl.handle.net/11299/216462
Antimicrobial Residues in Farmed Shrimp
Get PDFLee, James; Phelps, Nicholas. (2014). Antimicrobial Residues in Farmed Shrimp. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/170086
Survey of anglers who had a fishing license in the 2018-2019 fishing season
No full textData files including de-identified survey responses, variable labels, supplementary tables, and qualitative responses.This is a dataset containing responses to a 2019 mailed paper survey of recreational anglers in Minnesota, USA. The release of live baitfish by anglers has been identified as a high-risk pathway for aquatic invasive species due to the potential for invasive fish, invertebrates, or pathogens to be release simultaneously with the baitfish. Consequently, the release of live baitfish is illegal in many jurisdictions, but little is known about compliance rates or motivations for illegal release. To assess the incidence of live baitfish release, we administered a mailed survey to a random sample of anglers who held a 2018-2019 annual fishing license and received 681 responses. To mitigate potential recall bias, we also administered 345 intercept surveys at waterbody access sites around the state asking anglers about the current day’s behaviors. Four hundred and eighty-one (72%) of the mailed survey respondents reported that they used live baitfish and of those, 99 (20%) reported that they release their leftover live baitfish into the water at least some of the time. Of the anglers surveyed at waterbody access sites, 59 (19%) were using live baitfish on the day they were surveyed and of those, 11 (18%) released their leftover baitfish into the water. The reasons provided for release included convenience and a misperception that released baitfish benefit the recipient ecosystem. Given the many millions of fishing trips that occur every year, the current rate of illegal baitfish release results in many chances for invasive species introduction. However, there is also significant opportunity for management interventions aimed at changing perceptions and providing convenient disposal alternatives to illegal release to reduce the risk presented by this pathway. This data is being released in accordance with the terms of our funding and to facilitate review of the paper prior to publication.Legislative Citizen Commission on Minnesota ResourcesMinnesota Aquatic Invasive Species Research CenterEnvironment and Natural Resources Trust Fund (CON 00074066)McEachran, Margaret C.; Hofelich Mohr, Alicia; Lindsay, Thomas; Phelps, Nicholas; Fulton, David. (2022). Survey of anglers who had a fishing license in the 2018-2019 fishing season. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://doi.org/10.13020/7tpp-c606
Network-based optimization algorithm code for AIS Explorer: Prioritization for Watercraft Inspections
No full textThe algorithm submitted here operates on a directed, weighted boat-movement network between lakes and a lake-level infestation status database. It identifies a ranked list of lakes to assign watercraft inspectors to, maximizing the proportion of “risky boats” (boats moving from AIS-infested to uninfested lakes) that are inspected at least once, subject to county-level placement constraints. The algorithm uses an iterative rank-and-remove heuristic based on lake strength (the sum of risky boats entering and leaving each lake). Outputs include, for each lake in a given county, its rank, the marginal proportion of risky boats intercepted if an inspector is placed there, and the cumulative proportion of risky boats intercepted as inspectors are added sequentially. The code was developed to support the AIS Explorer: Prioritization for Watercraft Inspections web application and is provided here for transparency and reuse.This research was supported by the Environment and Natural Resources Trust Fund as recommended by the Legislative Citizen Commission of Minnesota Resources and the Minnesota Aquatic Invasive Species Research Center, and the State of Minnesota.Kinsley, Amy; Haight, Robert; Snellgrove, Nicholas; Muellner, Petra; Muellner, Ulrich; Duhr, Meg; Phelps, Nicholas. (2022). Network-based optimization algorithm code for AIS Explorer: Prioritization for Watercraft Inspections. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://hdl.handle.net/11299/277275
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