Skip to main content
Advanced Search

Filters: partyWithName: Daniel A Grear (X)

13 results (29ms)   

View Results as: JSON ATOM CSV
(i) This dataset presents macroscopic and microscopic pathological findings and bacteriology of 178 tadpoles diagnosed with Severe Perkinsea Infections. (ii) Specimen were collected and submitted to the NWHC as part of mortality investigations and collection of specimen from apparently healthy populations as part of ongoing amphibian health monitoring. (iii) Necropsies and gross evaluation of carcasses were carried out under a dissecting microscope. (iv) Severe Perkinsea Infection was confirmed in each specimen by histological observation of pathological changes in tissues with presence of Perkinsea-like organisms in at least one organ, including brain, eyes, gastrointestinal tract, gills, heart, liver, lungs, kidney,...
Snake fungal disease (SFD; ophidiomycosis), caused by the pathogen Ophidiomyces ophidiicola (Oo), has been documented in wild snakes in North America and Eurasia, and is a potentially emerging disease in the eastern USA. However, a lack of historical disease data has made it challenging to determine whether Oo is a recent arrival to the USA or whether SFD emergence is due to other factors. Here, we examined the genomes of 82 Oo strains to determine the pathogen’s history in the eastern USA. This dataset contains metadata on the strains used in that study.
Results of a literature search performed December 1, 2020. The tables in this document summarize the publications fitting in this search criteria and are split into the publications that update the list of international species that could carry Bsal (Appendix 1 Table S1). Number of individual live amphibians imported in categories of urodelan (salamander, newt, and related taxa) species restricted under the interim regulations and not listed, species not listed on the regulations that have had Bsal detected, notably Bombina spp., anuran species in the genus Rana, and Xenopus (including African clawed frogs) as a comparison of species not thought to be susceptible to Bsal, but commonly imported (Appendix 3 Table...
thumbnail
This dataset includes results from external skin swabbing of Rana boylii and Dicamptodon tenebrosus to test for the fungus Batrachochytrium dendrobatidis from Fox Creek in Mendocino County, California, in 2016-2020. Morphological measurements of swabbed animals were recorded, and Rana boylii had a unique identifier (pit tag) inserted beneath their skin for identification in future capture events. These data supports the following publication: Belasen, A.M., Peek, R.A., Adams, A.J., Russell, I.D., De León, M.E., Adams, M.J., Bettaso, J., Breedveld, K.G.H., Catenazzi, A., Dillingham, C.P. and Grear, D.A., 2024. Chytrid infections exhibit historical spread and contemporary seasonality in a declining stream-breeding...
thumbnail
Comma-separated values (.csv) file containing data related to amphibian sampling across the United States between 2016 and 2021. Data files contain mercury concentrations in amphibian and dragonfly tissues, mercury concentrations in sediment, as well as amphibian morphometrics, and habitat and climate characteristics where the samples were collected.
thumbnail
Avian morbidity and mortality events reported in WHISPers that began in calendar year 2023. Events reported in WHISPers represent only those events that are reported to the USGS National Wildlife Health Center or the Southeastern Cooperative Wildlife Disease Studies at the University of Georgia, or that State, Federal, and Tribal partners voluntarily report into WHISPers, not legal, and marked as “Visible to the Public”.
thumbnail
This dataset provides the results of a national survey of the conterminous U.S. for the salamander chytrid fungus Batrachochytrium salamandrivorans (Bsal) conducted by the U.S. Geological Survey Amphibian Research and Monitoring Initiative from May 2014 to August 2017. Sites were sampled by capturing amphibians by hand or by traps or nets that were then swabbed individually using methods that prevent sample contamination. All swabs were then analyzed using a real-time TaqMan PCR for detection of B. salamandrivorans on the extracted DNA. The data consist of locality information and data on the individual sampled, as well as the result of the test for B. salamandrivorans. No cases of B. salamandrivorans were detected...
thumbnail
This dataset includes results from external skin swabbing of Anaxyrus williamsi and Lithobates catesbeianus to test for the fungus Batrachochytrium dendrobatidis from the Dixie Valley in Churchill County, Nevada, in 2019-2021.
thumbnail
The emergence of ophidiomycosis (or snake fungal disease) in snakes has prompted increased awareness of the potential impacts of fungal infections on wild reptile populations. Yet, aside from Ophidiomyces ophidiicola, little is known about other mycoses affecting wild reptiles. The closely related genus Paranannizziopsis has been associated with dermatomycosis in snakes and tuataras in captive collections and P. australasiensis was recently identified as the cause of skin infections in non-native wild panther chameleons (Furcifer pardalis) in Florida, USA. Here we describe five cases of Paranannizziopsis spp. associated with skin lesions in wild snakes in North America and one additional case from a captive snake...
thumbnail
We conducted a serosurvey of snowshoe hares (Lepus americanus) for vector-borne pathogens in 2016-2017 that were captured in the Hiawatha National Forest in the eastern Upper Peninsula of Michigan, USA. At capture, in addition to age, sex, body weight of the hare and a blood sample data was collected on the ecological land type (USDA Forest Service. 2006. Hiawatha National Forest 2006 Forest Plan. https://www.fs.usda.gov/detail/hiawatha/landmanagement/planning/?cid=STELPRDB5106336) at the point of capture. Serology was conducted for antibodies to Snowshoe hare virus, Jamestown Canyon virus, La Crosse virus, West Nile virus, tick-transmitted Powassan virus, Silverwater virus, Borrelia burgdorferi, and Francisella...
thumbnail
Data in this dataset were collected as a part of the Student Network for Amphibian Pathogen Surveilance (SNAPs) program throughout the United States by undergraduate students in biology or ecology courses as a part of their curriculum. This data was collected in the field by students and sent to the USGS National Wildlife Health Center (NWHC) for testing of two amphibian fungal pathogens, Batrachochytrium dendrobatidis (Bd) and Batrachochytrium salamandrivorans (Bs). The dataset includes both the field records of the individual amphibians tested and the results for individuals for Bd and Bs. This is Product Number 209311 of the U.S. Geological Survey Amphibian Research and Monitoring Initiative (ARMI).
Climate change is expected to have significant effects on the phenology of vectors of arthropod-borne diseases, particularly mosquitoes. However, forecasting the direction and magnitude of future phenological shifts requires a more detailed understanding of the climate drivers of mosquito phenology. Addressing this knowledge gap is particularly salient for mosquitoes, as they have the potential to affect human health through transmission of zoonotic disease. While models based on climate and mosquito life history have been created at local or regional scales, national-scale predictions of the timing of mosquito activity are not readily available for the U.S. Our workshop proposes to synthesize primary data on mosquito...
(i) Severe perkinsea data was based on the observation of characteristic gross and microscopic lesions and the morphological identification of Perkinsea organisms within the lesions. Necropsies and gross evaluation of carcasses were carried out under a dissecting microscope. Specimen were collected and submitted to the NWHC as part of mortality investigations and collection of specimen from apparently healthy populations as part of ongoing amphibian health monitoring. (ii) Epidemiological information was compiled from each anuran sample, including the detection type (mortality event or health monitoring study), location (state and county), anuran species reported in the event, life-stage of species reported in the...
    map background search result map search result map Pathogenic lineage of Perkinsea causes mass mortality of frogs across the USA: Data Data from a national survey for the amphibian chytrid fungus Batrachochytrium salamandrivorans Pathology and bacteriology of 178 tadpoles with histologically confirmed Severe Perkinsea Infections: Data Evaluating regulations and surveillance as risk-mitigation to the emerging amphibian pathogen Bsal- Data release Amphibian Chytrid Swab Data from Mendocino County, California (2016-2020) Amphibian Chytrid Swab Data from Churchill County, Nevada (2019-2021) Mercury concentrations in amphibian tissues across the United States, 2016-2021 Student Network for Amphibian Pathogen Surveillance Data (ver. 2.0, April 2024) Paranannizziopsis spp. associated with skin lesions in wild snakes in North America and development of a real-time PCR assay for rapid detection of the fungus in clinical samples Serologic Survey of Selected Arthropod Borne Pathogens in Free-ranging Snowshoe Hares (Lepus americanus) Captured in Northern Michigan, USA Avian morbidity and mortality data reported to the Wildlife Health Information Sharing Partnership - event reporting system (WHISPers) in the continental United States for events beginning on or between January 1, 2023 and December 31, 2023 Amphibian Chytrid Swab Data from Mendocino County, California (2016-2020) Amphibian Chytrid Swab Data from Churchill County, Nevada (2019-2021) Serologic Survey of Selected Arthropod Borne Pathogens in Free-ranging Snowshoe Hares (Lepus americanus) Captured in Northern Michigan, USA Data from a national survey for the amphibian chytrid fungus Batrachochytrium salamandrivorans Pathogenic lineage of Perkinsea causes mass mortality of frogs across the USA: Data Evaluating regulations and surveillance as risk-mitigation to the emerging amphibian pathogen Bsal- Data release Student Network for Amphibian Pathogen Surveillance Data (ver. 2.0, April 2024) Mercury concentrations in amphibian tissues across the United States, 2016-2021 Avian morbidity and mortality data reported to the Wildlife Health Information Sharing Partnership - event reporting system (WHISPers) in the continental United States for events beginning on or between January 1, 2023 and December 31, 2023 Paranannizziopsis spp. associated with skin lesions in wild snakes in North America and development of a real-time PCR assay for rapid detection of the fungus in clinical samples Pathology and bacteriology of 178 tadpoles with histologically confirmed Severe Perkinsea Infections: Data