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19 results for “Muskrat”
Data from a Large-Scale Experiment to Evaluate the Effects of Trapping to Control Muskrats (Ondatra zibethicus) in The Netherlands
<p>This data set supports the publication 'A Large-Scale Experiment to Evaluate the Effects of Trapping to Control Muskrats (Ondatra zibethicus) in The Netherlands' by Daan Bos, Emiel van Loon, Erik Klop and Ron Ydenberg. (the paper was accepted for publication in Wildlife Society Bulletin in 2020)</p> <p>The Muskrat is an invasive species in Europe and in the Netherlands muskrat burrowing can compromise the integrity of dykes and hence poses a public safety threat. For that reason a control programme has been in effect since the arrival of the species in 1941. To investigate the relation between catch and effort and enhance prediction models, a large randomized controlled experiment was designed and conducted from 2013 till 2016. The publication by Bos et al. (2020) analyses the experimental results and here we present and document the experimental data. See the readme.md file for further information.</p>
Presence of Echinococcus multilocularis and Taenia taeniaformis in muskrats (Ondatra zibethicus)
<p>This dataset describes the presence of <em>Echinococcus multilocularis</em> and <em>Taenia taeniaformis </em>in muskrats (<em>Ondatra zibethicus</em>) in Flanders, Belgium.</p> <p>From 1994 onward, muskrats from Flanders have been autopsied with the aim of understanding their demography. In 2008, we first detected EM in a muskrat from Lessines (Wallonia), just across the border with Flanders. Therefore, from 2009 onward, all available muskrats from Flanders and neighbouring regions were collected and examined.</p> <p>The dataset contains the following variables:</p> <ul> <li><code>date</code>: YYYY-MM-DD</li> <li><code>province</code>: Flemish province where the muskrat was captured, for locations outside of Flanders only a municipality is provided</li> <li><code>municipality</code>: the municipality where the muskrat was captured</li> <li><code>weight</code>: the weight of the animal in grams</li> <li><code>sex</code>: either M: male or F: female</li> <li><code>taen</code>: Infection with <em>Taenia taeniaformis</em>, scored as: <ul> <li>0: No <em>T. taeniaformis </em>present</li> <li>1: Few <em>T. taeniaformis </em>present</li> <li>2: Multiple <em>T. taeniaformis </em>present</li> <li>3: A high number of <em>T. taeniaformis </em>present</li> </ul> </li> <li><code>EM</code>: Infection with <em>Echinococcus multilocularis</em>, scored as: <ul> <li>N: negative, no parasites present</li> <li>P: positive, parasite present</li> <li>?: unsure</li> </ul> </li> </ul>
MRI and unbiased averages of wild muskrats (Ondatra zibethicus) and red squirrels (Tamiasciurus hudsonicus)
<p>Preprocessed data from:</p> <p>Amuno, S., Rudko, D.A., Gallino, D., Tuznik, M., Shekh, K., Kodzhahinchev, V., Niyogi, S., Chakravarty, M.M., Devenyi, G.A., 2020. Altered neurotransmission and neuroimaging biomarkers of chronic arsenic poisoning in wild muskrats (Ondatra zibethicus) and red squirrels (Tamiasciurus hudsonicus) breeding near the City of Yellowknife, Northwest Territories (Canada). Sci. Total Environ. 707, 135556. https://doi.org/10.1016/j.scitotenv.2019.135556</p> <p> </p> <p>As well as averages and brain masks generated during DBM processing. Files in both MINC2 and NIFTI format.</p>
MICA - Muskrat and coypu camera trap observations in Belgium, the Netherlands and Germany
<p><em>MICA - Muskrat and coypu camera trap observations in Belgium, the Netherlands and Germany</em> is a camera trap observations dataset published by the <a href="https://inbo.be">Research Institute of Nature and Forest (INBO)</a>. It is part of the <a href="https://lifemica.eu/">LIFE project MICA</a>, in which innovative techniques are tested for a more efficient control of muskrat and coypu populations, both invasive species. The dataset contains camera trap observations of muskrat and coypu, as well as many other observed species.</p> <p>Data in this package are exported from the camera trap management system Agouti (<a href="https://agouti.eu">https://agouti.eu</a>) and formatted as a <a href="https://tdwg.github.io/camtrap-dp/">Camera Trap Data Package (Camtrap DP)</a>.</p> <p><strong>Files</strong></p> <p>Files are structured as a <a href="https://specs.frictionlessdata.io/data-package/">Frictionless Data Package</a>. You can access all data in R via <code>https://zenodo.org/record/5590881/files/datapackage.json</code> using <a href="https://frictionlessdata.github.io/frictionless-r/">frictionless</a>.</p> <ul> <li><strong>datapackage.json</strong>: technical description of the data files.</li> <li><strong>deployments.csv</strong>: camera trap deployments. Includes <code>deploymentID</code>, start, end, location and camera setup information.</li> <li><strong>media.csv</strong>: media files (images/videos) captured by the camera traps. Associated with deployments (<code>deploymentID</code>) and organized in sequences (<code>sequenceID</code>). Includes timestamp and file path.</li> <li><strong>observations.csv</strong>: observations based on the media files. Associated with deployments (<code>deploymentID</code>) and sequences (<code>sequenceID</code>). Observations can mark non-animal events (camera setup, human, blank) or one or more animal observations (<code>observationType</code> = <code>animal</code>) of a certain taxon, count, age, sex, behaviour and/or individual.</li> </ul>
Estimated wetland vegetation cover comparing reference and muskrat disturbed areas
Biota that act as ecosystem engineers are increasingly recognized as effective components of habitat restoration as they can continuously alter and shape their environments without human intervention. Muskrats are considered ecosystem engineers and are relatively common in North American wetlands. While muskrat impacts to large areas have been documented, few studies have quantified the impact of muskrats on ecosystem biodiversity. We conducted a field study in wetlands along the Upper St. Lawrence River (New York, USA) to investigate the effects of muskrat herbivory and structure building on plant biodiversity in cattail-invaded wetlands. The data collected are separated into two main groups, i.e. “reference” vegetation surveys and “muskrat” vegetation surveys. “Reference” surveys were conducted for the partial grant fulfillment funded by the New York Department of Environmental Conservation [contract AM10165] and the National Fish and Wildlife Foundation special project administered by the United States Fish and Wildlife Service, Partners for Fish and Wildlife Program, New York Field Office, Cortland, NY [grant number #2005-0129-055/58859]. “Muskrat” surveys were conducted for the Masters project by Z.X. Kua. The five datasets include 1) Reference quadrat plant taxa estimated cover (n = 1912), 2) Reference quadrat cattail measurements (n = 737), 3) Muskrat-disturbed quadrat plant taxa estimated cover (n = 1886), 4) Muskrat-disturbed quadrat cattail measurements (n = 582), and 5) Wetland plant taxa lookup table for vegetation survey (n = 135).
Muskrat Lodge Locations near transect 1 on northern Hog Island of the Virginia Coast Reserve 2005-2015
Locations of lodges of muskrats near Transect 1 on the northern end of Hog Island in May 2005 and repeated in May 2007, April 2009, May 2011, April 2013 and March 2015. In April 2009 no active muskrat lodges were observed from Transect 1. The remains of two lodges were observed, but they were less than 20 cm in height, had vegetation growing out of them, and showed no sign of activity, so they were not surveyed. Similarly in April 2011 a survey yielded no lodges. So for 2009 and 2011 GIS files were not created, because they would not have contained any points. In 2013 and 2015 one and three lodges were observed, respectively. Data collection was ceased after 2015, when the spread of Phragmites decreased visibility along the open areas of the transect to a few meters, making it impossible to detect lodges adjacent to the transect. Comments in the attribute tables in the layers contains information on the diameter and height(in decimeters or meters) of lodges.
Data from: Historical surveys reveal a long-term decline in muskrat populations
<p>The muskrat (<i>Ondatra zibethicus</i>) is an iconic species in Canada, valued for both its fur and its integral role in wetland ecosystems, and widely regarded for its perseverance. However, the resilience of this semi-aquatic mammal seems to be in question now as increasing evidence points to widespread population declines. Recent analyses of harvest data across North America suggest a reduction in their numbers, but this has not been widely corroborated by population surveys. In this study we replicated historic muskrat house count surveys at two large Great Lakes coastal wetlands and present confirmation that declines in muskrat harvest correspond to actual declines in muskrat abundance. At the Point Pelee National Park marsh and the Matchedash Bay-Gray Marsh wetland we found that mean muskrat house counts declined by 93% and 91% respectively between historic surveys 40-50 years ago and contemporary surveys over the past seven years. The factors responsible for these dramatic declines remain unclear but there may be a relationship with changes in the habitat quality of these wetlands that have occurred over the same time frame. Not only is the loss of muskrats an issue for the resulting loss of the wetland ecosystem services they provide, but it may be an indication of broader marsh ecosystem degradation. As such, a scarcity of muskrats should be considered a red flag for the state of biodiversity in our wetlands. Continued surveys and ongoing research are needed to shed more light on the current status of muskrat populations and their marsh habitats across their native range.</p>
Seasonal changes of vomeronasal responses to chemosensory cues associated with circulating estrogen in the female muskrats (Ondatra zibethicus)
<p>In numerous animals, the vomeronasal organ (VNO) is a crucial chemosensory organ that receives chemical signals, which is involved in species-specific behaviors, including social and sexual behaviors. Muskrat (<em>Ondatra</em> <em>zibethicus</em>) has a sensitive VNO system that detects specific chemicals such as pheromones and hormones and induces seasonal breeding behaviors. The purpose of this study is to investigate the distributions and expression patterns of vomeronasal receptor type-1 (V1R), vomeronasal receptor type-2 (V2R), estrogen receptors α and β (ERα and ERβ) in the female muskrats' VNO during the different periods. V1R, V2R, ERα and ERβ were found in sensory epithelial cells, non-sensory epithelial cells and lamina propria cells of the female muskrats' VNO. V2R and ERα mRNA levels in the VNO of the breeding period declined sharply, in comparison to those of the non-breeding period, while V1R and ERβ mRNA levels were detected reversely. Additionally, a transcriptomic study in the VNO identified that differentially expressed genes might be related to estrogen signals and metabolic pathways. These findings suggested that the seasonal structural and functional changes of VNO in the female muskrats within different reproductive statuses, and estrogen regulated its function through binding to ERα and ERβ in the female muskrats' VNO.</p>
A digital GIS update to the classic Ulbrich 1930 map of muskrat (Undatra zibethica) population range expansion in Central Europe
<p>This dataset is a digital version of a seminal dispersal data set of muskrat spread in Central Europe. We obtained and scanned an original copy of Ulbrich (1930), creating a digital image file, which we then geo-referenced in Arc Gis 10.2. The data herein contains metadata explaining the conversion process, necessary images to geo-reference the map, reference points used to "fix" the dispersal map to a map of present-day Europe, intermediate files (points and polygons produced when tracing the population ranges), and the final spatial dataset.</p> <p> </p> <p>Reference to the original data: Ulbrich, Johannes. 1930. Die Bisamratte; lebenweise, gang ihrer ausbreitung in Europa, wirtschaftliche bedeutung und bekampfung. Heinrich, Dresden.</p>
Marsh interspersion and muskrat (Ondatra zibethicus) habitat use
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Data from: Historical surveys reveal a long-term decline in muskrat populations
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Seasonal changes of vomeronasal responses to chemosensory cues associated with circulating estrogen in the female muskrats (Ondatra zibethicus)
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Data for: Impact of invasive Typha and wetland interspersion on muskrat declines in North America
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Data from: Muskrat disturbances and their analogues reduce invasive plant dominance within a Great Lakes coastal wetland
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On following pages: 4. Golden Hamster (Mesocricetus auratus); 5. Ciscaucasian Hamster (Mesocricetus raddei); 6 Hamster (Cricetulus migratorius); 9. Long-tailed Dwarf Hamster (Cricetulus longicaudatus); 10. Striped Dwarf Hamster (Cricetulus alticola); 13. Tibetan Dwarf Hamster (Cricetulus kamensis); 14. Gansu Hamster (Cansumys canus); 15. Eversmann's Hamster (Allocricetulus eversmanni); 18. Common Hamster (Cricetus cricetus); 19. Long-clawed Mole (Ondatra zibethicus); 22. Western Heather Vole (Phenacomys intermedius); 23. Eastern Heather Vole (Phenacomys Tree Vole (Arborimus pomo); 27. Northern Bog Lemming (Synaptomys borealis); 28. Southern Bog Lemming (Synaptomys 31. Norway Brown Lemming (Lemmus lemmus); 32. Siberian Brown Lemming (Lemmus sibiricus); 33. Nearctic Brown. Brandt's Hamster (Mesocricetus brandti); 7. Romanian Hamster (Mesocricetus newton); 8. Gray Dwarf (Cricetulus barabensis); 11. Sokolov's Dwarf Hamster (Cricetulus sokolovi); 12. Ladakh Dwarf Hamster Greater Long-tailed Hamster (Tscherskia triton); 16. Mongolian Hamster (Allocricetulus curtatus); 17. Vole (Prometheomys schaposchnikowi); 20. Round-tailed Muskrat (Neofiber allen); 21. Common Muskrat ungava); 24. White-footed Vole (Arborimus albipes); 25. Red Tree Vole (Arborimus longicaudus); 26. Sonoma cooperi); 29. Wood Lemming (Myopus schisticolor); 30. Amur Brown Lemming (Lemmus amurensis); Lemming (Lemmus trimucronatus). in Cricetidae
On following pages: 4. Golden Hamster (Mesocricetus auratus); 5. Ciscaucasian Hamster (Mesocricetus raddei); 6 Hamster (Cricetulus migratorius); 9. Long-tailed Dwarf Hamster (Cricetulus longicaudatus); 10. Striped Dwarf Hamster (Cricetulus alticola); 13. Tibetan Dwarf Hamster (Cricetulus kamensis); 14. Gansu Hamster (Cansumys canus); 15. Eversmann's Hamster (Allocricetulus eversmanni); 18. Common Hamster (Cricetus cricetus); 19. Long-clawed Mole (Ondatra zibethicus); 22. Western Heather Vole (Phenacomys intermedius); 23. Eastern Heather Vole (Phenacomys Tree Vole (Arborimus pomo); 27. Northern Bog Lemming (Synaptomys borealis); 28. Southern Bog Lemming (Synaptomys 31. Norway Brown Lemming (Lemmus lemmus); 32. Siberian Brown Lemming (Lemmus sibiricus); 33. Nearctic Brown. Brandt's Hamster (Mesocricetus brandti); 7. Romanian Hamster (Mesocricetus newton); 8. Gray Dwarf (Cricetulus barabensis); 11. Sokolov's Dwarf Hamster (Cricetulus sokolovi); 12. Ladakh Dwarf Hamster Greater Long-tailed Hamster (Tscherskia triton); 16. Mongolian Hamster (Allocricetulus curtatus); 17. Vole (Prometheomys schaposchnikowi); 20. Round-tailed Muskrat (Neofiber allen); 21. Common Muskrat ungava); 24. White-footed Vole (Arborimus albipes); 25. Red Tree Vole (Arborimus longicaudus); 26. Sonoma cooperi); 29. Wood Lemming (Myopus schisticolor); 30. Amur Brown Lemming (Lemmus amurensis); Lemming (Lemmus trimucronatus).
Figure 2 from: Brunke A, Smetana A, Carruthers-Lay D, Buffam J (2017) Revision of Hemiquedius Casey (Staphylinidae, Staphylininae) and a review of beetles dependent on beavers and muskrats in North America. ZooKeys 702: 27-43. https://doi.org/10.3897/zookeys.702.19936
Figure 2 - Hemiquedius ferox (Casey) (A, B, E); H. infinitus Brunke and Smetana (C, D, G); and H. castoris Brunke and Smetana (F). Aedeagus in parameral view (A, C), median lobe in lateral view (B, D), paramere (E), left portion of paramere with peg setae (F, G). Scale bars: 0.5 mm (A–E), 0.25 mm (F–G).
Figure 1 from: Brunke A, Smetana A, Carruthers-Lay D, Buffam J (2017) Revision of Hemiquedius Casey (Staphylinidae, Staphylininae) and a review of beetles dependent on beavers and muskrats in North America. ZooKeys 702: 27-43. https://doi.org/10.3897/zookeys.702.19936
Figure 1 - Habitus of Hemiquedius castoris Brunke and Smetana (A); H. castoris, elytra and scutellum (B); H. infinitus Brunke and Smetana, elytra and scutellum (C); H. ferox (Casey), male sternite VIII (D); H. castoris, male sternite VIII (E). Scale bars: 2 mm (A); 1 mm (B–E).
Figure 4 from: Brunke A, Smetana A, Carruthers-Lay D, Buffam J (2017) Revision of Hemiquedius Casey (Staphylinidae, Staphylininae) and a review of beetles dependent on beavers and muskrats in North America. ZooKeys 702: 27-43. https://doi.org/10.3897/zookeys.702.19936
Figure 4 - Distribution of H. castoris Brunke and Smetana, Hemiquedius ferox (Casey), and H. infinitus Brunke and Smetana. White markers indicate state only records (placed at the centre of each state) in the absence of more detailed data.
Figure 3 from: Brunke A, Smetana A, Carruthers-Lay D, Buffam J (2017) Revision of Hemiquedius Casey (Staphylinidae, Staphylininae) and a review of beetles dependent on beavers and muskrats in North America. ZooKeys 702: 27-43. https://doi.org/10.3897/zookeys.702.19936
Figure 3 - Pronotum shape in Hemiquedius species (n = 10, 5 of each sex): Hemiquedius castoris Brunke and Smetana (A); H. infinitus Brunke and Smetana (B) and H. ferox (Casey) (C).
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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