A5056631174- Mercury impact and mitigation studies
- Avian ecology and behavior
- Fish Ecology and Management Studies
- Heavy Metal Exposure and Toxicity
- Toxic Organic Pollutants Impact
- Wildlife Ecology and Conservation
- Heavy metals in environment
- Environmental Toxicology and Ecotoxicology
- Water Quality and Pollution Assessment
- Animal Nutrition and Physiology
- Ecology and biodiversity studies
- Species Distribution and Climate Change
- Livestock and Poultry Management
- Trace Elements in Health
- Bird parasitology and diseases
- Animal Ecology and Behavior Studies
- Wildlife-Road Interactions and Conservation
- Pharmaceutical and Antibiotic Environmental Impacts
- Invertebrate Taxonomy and Ecology
- Effects and risks of endocrine disrupting chemicals
- Rangeland and Wildlife Management
- Aquaculture Nutrition and Growth
- Cassava research and cyanide
- Hydrology and Sediment Transport Processes
- Water Quality and Resources Studies
University of Illinois Urbana-Champaign
2011-2022
North Carolina State University
2022
Louisiana State University Agricultural Center
2022
Illinois Department of Natural Resources
2004-2021
University of Toledo
2020
Illinois Archaeological Survey
2002-2018
Urbana University
2007
Southern Illinois University Carbondale
2004
Exposure to anthropogenic endocrine disruptors has been listed as one of several potential causes amphibian declines in recent years. We examined gonads 814 cricket frogs (Acris crepitans) collected Illinois and deposited museum collections elucidate relationships between the decline this species spatial temporal distribution individuals with intersex gonads. Compared preorganochlorine era studied (1852-1929), percentage increased during period industrial growth initial uses polychlorinated...
We conducted a 30-day acute toxicity test of zinc (Zn) shot using 6- to 8-month-old wild-type game-farm Mallards (Anas platyrhynchos), 40 which (20 males and 20 females) were dosed with 6 No. 4 candidate pellets containing 98% Zn 2% tin (Sn); the remaining ducks steel (Fe) served as controls. The resulted in high mortality, greater proportion females dying than males. For study, survival averaged 18 23 days for female male Zn-dosed ducks, respectively; all Fe-dosed survived Day 30....
Abstract American mink ( Neovison vison ) are secretive, semi‐aquatic carnivores that often require noninvasive methods based on field signs such as tracks and scat for determining their spatial distribution. Most previous assessments of survey have been conducted in the United Kingdom where an invasive species. We evaluated techniques riparian habitat its native range midwestern States. used occupancy modeling to compare detection rates between walking surveys raft surveys, we potential...
Changes in hematological and serum biochemistry parameters female zinc (Zn)-dosed farm-raised mallards (Anas platyrhynchos) fed four different diets were examined. Sixty ducks received an average dose of 0.97 g Zn the form eight, 3.30-mm diameter shot pellets containing 98% 2% tin, another 60 sham-dosed as controls. Fifteen from each two dosing groups assigned to one dietary treatments: corn only, with soil, commercial duck ration or soil. Shot-pellet dissolution rates ranged 7 mg/Zn/day 27...
Persistent organic pollutants were assessed in Humboldt Penguins (Spheniscus humboldti) from the Punta San Juan Marine Protected Area, Peru, austral winter of 2009. Plasma samples 29 penguins evaluated for 31 polychlorinated biphenyl (PCB) congeners and 11 organochlorine pesticides (OCPs) by using gas chromatography coupled to an ion trap mass spectrometer 15 polybrominated diphenyl ether (PBDE) with high-resolution spectrometry. The detection rate PCBs was 69%, 105, 118, 180, 153 most...
Miankaleh and Gomishan International Wetlands are important wintering areas for waterbirds in the Caspian Sea region. Previous studies revealed increased exposure to metals some species of using these wetlands. In this study, we examined concentrations cadmium (Cd), chromium (Cr), iron (Fe), lead (Pb), zinc (Zn) kidneys, liver, pectoral muscle Gadwall (Anas strepera) Common Teal crecca) collected 2012. addition, measured elements water sediments from collection sites. The genders differed...
Whole blood, serum, and feather samples from 29 Humboldt Penguins (Spheniscus humboldti) at the Punta San Juan Marine Protected Area, Peru, were analyzed for 55 toxic essential elements by using inductively coupled plasma mass spectrometry. Mercury (Hg) was cold vapor atomic fluorescence. Maximum Hg concentrations in serum (0.0056 mg/g), whole blood (0.297 mg/kg), feathers (1.8 mg/kg dry weight) levels generally not considered to cause health impairment. Of analyzed, only eight (aluminum,...
Numerous organisms exhibit carry-over effects, in which previous environmental conditions impact current performance. For example, reproductive output for many migratory birds can be impacted by events during the preceding migration. Lesser Scaup (Aythya affinis (Eyton, 1838); hereafter scaup) declined dramatically 1970s–2000s, and there is evidence linking reduced to body condition spring In addition food availability quality, haemosporidian parasites (Plasmodium spp., Haemoproteus spp.)...
To describe and quantify morphologic abnormalities in RBCs of mallards (Anas platyrhynchos) with experimentally induced zinc toxicosis.120 female mallards.Farm-raised (6 to 8 months old) were used the study. On day 0, 60 ducks received shot pellets orally by gavage (mean dose zinc, 0.97 g); another underwent same procedure without administration pellets. 15, Romanowsky-stained blood smears prepared from 53 control 45 zinc-treated (smears examined retrospectively). In each smear, 200 numbers...
With a set of external measurements from sample known-sex American crows (Corvus brachyrhynchos) in central Illinois, we determined whether published discriminant function for sex determination was applicable to different geographic location than the reference sample. Low classification success with this equation, likely due size differences between regions, led creation new age-specific functions, which correctly classified 100%, and 89% hatch-year, subadult, adult crows, respectively. This...
Baseline hematologic and serum chemistry values are used by veterinarians wildlife biologists to identify abnormally high or low levels of particular blood parameters in a target species. This vital information can assist animal care providers making informed decisions on the help determine diagnoses for certain illnesses. Published parameter not available wild-caught muskrats (Ondatra zibethicus). We measured 27 from 29 free-ranging, riparian caught June–November 2008 east-central Illinois,...