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Filters: Tags: Wildlife Disease (X) > partyWithName: Julia S Lankton (X)

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This dataset consists of measurements of the digestive gland in the freshwater snail Lymnaea stagnalis orally exposed to uranium. The objective of the study was to assess the morphological effects of uranium on the snail digestive gland by light microscopy. Laboratory-cultured L stagnalis were exposed to either synthetic or natural solid phases of uranium and a subset (6 controls and 6 exposed) were euthanized and fixed in 10% neutral buffered formalin for histopathological assessment. Slides were processed and stained with hematoxalin and eosin as per standard procedure (Luna 1968). The size of each sample, the length and width of digestive gland tubules (5 random glands per sample) and height of digestive cells...
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The U.S. Geological Survey National Wildlife Health Center (NWHC) measured environmental contaminants in bald eagles (Haliaeetus leucocephalus) and golden eagles (Aquila chrysaetos) to evaluate dietary exposure to lead, mercury, and anticoagulant rodenticides (AR), which was identified by U.S. Fish and Wildlife Service (USFWS) as a priority issue of concern for the Mountain Prairie Region 6. Carcasses of bald eagles (n = 172) and golden eagles (n = 142) collected from North and South Dakota, Montana, Wyoming, Colorado, Utah, Nebraska, and Kansas between 2014-2017 were assessed for cause of death and liver lead, mercury, and AR levels. Trauma, electrocution, and lead poisoning were the 3 leading causes of death,...
This work is part of a study of the immunological effects of exposure to alternative flame retardants in avian species. For the pathology portion of the study, hatchling American kestrels (Falco sparverius) were exposed to the flame retardant isopropyl triphenyl phosphate (ITP) and then challenged with a synthetic analogue of viral double-stranded RNA, polyinosinic:polycytidylic acid (poly I:C). Control birds were challenged with vehicle only or vehicle and poly I:C. At euthanasia, spleen, thymus, and bursa of Fabricius were collected and fixed in 10% neutral buffered formalin for histopathological assessment. Slides were processed and stained with hematoxalin and eosin as per standard procedure (Luna 1968). Quantitative...
This work is part of an experimental trial investigating the effects of microclimate conditions of temperature and humidity on a fungal pathogen, Pseudogymnoascus destructans (Pd), that causes white-nose syndrome (WNS) disease in hibernating bats. As part of the trial, tri-colored bats (Perimyotis subflavus) were exposed to Pseudogymnoascus destructans (Pd) and allowed to hibernate in chambers with a variety of temperature and humidity conditions. Bats were euthanized after 83 days. A portion of the wing was rolled around dental wax dowels, fixed in 10% neutral buffered formalin, processed and stained with periodic acid-Schiff, and assessed by light microscopy for evidence of fungal infection. Three types of cutaneous...
This dataset describes histopathological changes in liver, kidney, heart, skeletal muscle and intestine of captive American kestrels exposed to the second-generation anticoagulant rodenticide brodifacoum (BROD). The goal of the study was to determine the toxic range of brodifacoum by feeding birds a diet containing 0.3, 1.0, or 3.0 ug BROD/g wet weight. Birds were necropsied and examined grossly for hemorrhages or anemia, and liver, kidney, heart, pectoral muscle, and intestine was collected for histopathological evaluation. Tissues were scanned at least 100x magnification and all lesions, including hemorrhage, inflammation, and degenerative changes, were described and assigned a morphologic diagnosis with severity,...
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This work is part of a study investigating the movement of microcystin from aquatic to terrestrial ecosystems via trophic transfer. Little brown bats (Myotis lucifugus), feeding opportunistically on aquatic insects including Hexagenia mayflies, were collected from a maternity roost near Little Traverse Lake (Leelanau County, Michigan, USA). Bats and fecal samples were collected for dietary analysis, quantification of microcystin in livers and feces, and histopathological evaluation of the liver. Liver was collected in RNAlater and stored frozen. Livers from three bats with the highest microcystin levels by ELISA were thawed, washed with PBS, fixed in 10% neutral buffered formalin, processed routinely for histopathology,...
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This dataset includes epidemiology, clinical signs, gross and microscopic pathology, and virology data from two red foxes (Vulpes vulpes) and one fisher (Pekania pennanti) submitted to the USGS-National Wildlife Health Center for cause-of-death determination and confirmed positive for highly pathogenic avian influenza (HPAI) H5N1 by USDA’s National Veterinary Services Laboratories. The foxes were juveniles from North Dakota and the fisher was an adult from Wisconsin. Clinical signs included neurological deficits such as ataxia, lethargy, or paralysis. Gross and microscopic lesions included myocardial pallor, pulmonary and hepatic congestion, meningoencephalitis, interstitial pneumonia, myocardial necrosis, and hepatic...
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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...
Snake fungal disease (SFD) represents a conservation threat to wild snake populations. The disease was reported in North America early in the 21st century, but the history of SFD has not been investigated. We examined museum specimens and confirmed cases of SFD based on clinical signs, histopathologic lesions, and detection of the causative agent Ophidiomyces ophidiicola. The first confirmed cases of SFD in these specimens was >50 years prior to the disease’s reported emergence.
This work is part of a study of the immunological effects of exposure to alternative flame retardants in avian species. For the pathology portion of the study, spleens and bursas from American kestrels (Falco sparverius) exposed by egg injection to varying doses of short-chain chlorinated paraffins (SCCPs) and the flame retardant TBBPA-BDBPE were examined microscopically for architectural and cellular abnormalities. At euthanasia, spleen and bursa of Fabricius were collected and fixed in 10% neutral buffered formalin for histopathological assessment. Slides were processed and stained with hematoxalin and eosin as per standard procedure (Luna 1968). Quantitative and qualitative B and T cell parameters were assessed...
Detailed data collected from the field and generated during diagnostic evaluation of whooping crane carcasses from the Eastern Migratory Population.
This work is part of a study demonstrating that the fungus Nannizziopsis guarroi is the cause of the disease known as yellow fungus disease in bearded dragons (Pogona vitticeps) by fulfilling Koch’s postulates. In this study, bearded dragons were exposed to N. guarroi to assess gross and microscopic lesion development and the ability to re-culture the fungus from infected sites. At euthanasia, skin and internal organs were collected and fixed in 10% neutral buffered formalin for histopathological assessment. Slides were processed and stained with periodic acid-Schiff as per standard procedure (Luna 1968). Skin from exposed and control animals was assessed via light microscopy for the following parameters: type,...
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This data set is composed of all animals received as a diagnostic submission to the USGS National Wildlife Health Center for which algal toxin testing was performed from November 1998 to January 2018. Birds with a histologic diagnosis of avian vacuolar myelinopathy, a disease caused by the algal toxin aetokthonotoxin, are also included. Algal toxins tested for include brevetoxin, cylindrospermopsin, domoic acid, microcystin, and saxitoxin. Case-accession number, species, state collected, month and year collected, and detection or non-detection of the algal toxin is reported.
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This dataset documents histopathological changes in liver, kidney, skeletal muscle and intestine of captive American kestrels (Falco sparverius) exposed to brodifacoum formulations with differing elimination half-lives in target rodents. The toxicity of two brodifacoum formulations with stereoisomers having markedly different elimination half-lives in rats (Formulation A containing the 2 least persistent stereoisomers, Formulation B containing the most persistent stereoisomer) were tested in a 7-day dietary feeding trial. Based on previous kestrel studies using commercially available brodifacoum, Formulations A and B were each provided at 3 dietary concentrations (0.05, 0.1 and 0.5 µg/g diet, 4 kestrels/dose level)...
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This data set provides biological information from of a captive study of transgenic mice that received either passive serum transfers from black-footed ferrets (BFFs) that were vaccinated against SARS-CoV-2 or BFFs that were unvaccinated, or a monoclonal antibody against SARS-CoV-2 or lastly a placebo. After these treatments mice were challenged with SARS-CoV-2. The data included here have viral loads in the lungs of treated mice, as well as histological results from various tissues collected at the end of the study.
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This data set is composed of all events in the Wildlife Health Information Sharing Partnership Event Reporting System (WHISPers) between 1/1/2000 and 12/31/2020 from counties bordering the Chesapeake Bay. Relevant fields include WHSPers ID number, estimated number of animals affected, event start and end dates, states, counties, species involved, event diagnoses, etiological category of the primary cause/diagnosis, and whether concurrent algal blooms or toxins were reported at the time of the event. Additional information from NWHC case 24171is provided including: WHISPers event ID, case number, accession numbers, state, county, collection date, species, presence or absence of liver necrosis, and cause of death.
Rabbit hemorrhagic disease, a notifiable foreign animal disease in the USA, was reported for the first time in wild native North American rabbits and hares in April 2020 in the southwestern USA. Affected species included the Desert Cottontail (Sylvilagus audubonii), Mountain Cottontail (S. nutallii), Black-tailed Jackrabbit (Lepus californicus), and Antelope Jackrabbit (L. alleni). Desert Cottontails (n=7) and Black-tailed Jackrabbits (n=7) collected in April and May 2020 were necropsied at the U.S. Geological Survey National Wildlife Health Center (NWHC) and tested positive for Lagovirus europaeus GI.2, also known as rabbit hemorrhagic disease virus 2 (GI.2/RHDV2/b), by real-time PCR at the U.S. Department of Agriculture’s...
    map background search result map search result map Results of algal toxin testing from wildlife mortality submissions to the National Wildlife Health Center Confirmed cases of snake fungal disease in historical museum specimens Data from pathology of Lagovirus europaeus GI.2/RHDV2/b (rabbit hemorrhagic disease virus 2) in native North American lagomorphs Histopathology of little brown bats (Myotis lucifugus) collected from a maternity roost in Leelanau County, Michigan, USA, in June 2014 Wildlife mortality events in counties surrounding the Chesapeake Bay recorded in the Wildlife Health Information Sharing Partnership Event Reporting System (WHISPers) from 2000-2020 Viral loads, histology, and adverse events in transgenic mice after passive transfer of serum from black-footed ferrets (Mustela nigripes) used to assess the anti-viral efficacy of a subunit SARS-CoV-2 vaccine candidate USGS National Wildlife Health Center necropsy and contaminant results for bald and golden eagles collected in 8 States from January 1, 2014, through December 31, 2017 to determine cause of illness/death and lead, mercury, and anticoagulant rodenticide exposure Epidemiologic and diagnostic data from two red foxes (Vulpes vulpes) and one fisher (Pekania pennanti) with highly pathogenic avian influenza H5N1 submitted to the USGS National Wildlife Health Center in 2022 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 Histopathology of American Kestrels (Falco sparverius) Exposed to Two Brodifacoum Isomer Formulations with Differing Elimination Half-Lives Epidemiologic and diagnostic data from two red foxes (Vulpes vulpes) and one fisher (Pekania pennanti) with highly pathogenic avian influenza H5N1 submitted to the USGS National Wildlife Health Center in 2022 Viral loads, histology, and adverse events in transgenic mice after passive transfer of serum from black-footed ferrets (Mustela nigripes) used to assess the anti-viral efficacy of a subunit SARS-CoV-2 vaccine candidate Histopathology of American Kestrels (Falco sparverius) Exposed to Two Brodifacoum Isomer Formulations with Differing Elimination Half-Lives Histopathology of little brown bats (Myotis lucifugus) collected from a maternity roost in Leelanau County, Michigan, USA, in June 2014 Wildlife mortality events in counties surrounding the Chesapeake Bay recorded in the Wildlife Health Information Sharing Partnership Event Reporting System (WHISPers) from 2000-2020 USGS National Wildlife Health Center necropsy and contaminant results for bald and golden eagles collected in 8 States from January 1, 2014, through December 31, 2017 to determine cause of illness/death and lead, mercury, and anticoagulant rodenticide exposure Data from pathology of Lagovirus europaeus GI.2/RHDV2/b (rabbit hemorrhagic disease virus 2) in native North American lagomorphs Results of algal toxin testing from wildlife mortality submissions to the National Wildlife Health Center 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 Confirmed cases of snake fungal disease in historical museum specimens