A5056386225- Marine animal studies overview
- Mercury impact and mitigation studies
- Toxic Organic Pollutants Impact
- Per- and polyfluoroalkyl substances research
- Effects and risks of endocrine disrupting chemicals
- Meat and Animal Product Quality
- Arctic and Antarctic ice dynamics
- Wildlife Ecology and Conservation
- Cryospheric studies and observations
- Morphological variations and asymmetry
- Evolution and Paleontology Studies
- Cephalopods and Marine Biology
- Effects of Environmental Stressors on Livestock
- Animal Behavior and Welfare Studies
- Indigenous Studies and Ecology
- Animal Ecology and Behavior Studies
- Heavy Metal Exposure and Toxicity
- Stress Responses and Cortisol
- Bat Biology and Ecology Studies
- Coral and Marine Ecosystems Studies
- Ocean Acidification Effects and Responses
- Air Quality and Health Impacts
- Antioxidant Activity and Oxidative Stress
- Isotope Analysis in Ecology
- Thyroid Disorders and Treatments
Aarhus University
2008-2021
University of Alberta
2014-2020
Environmental Research Institute
2008-2009
University of Oslo
2008-2009
Mental Research Institute
2008-2009
Polar bears (Ursus maritimus) are subjected to several anthropogenic threats, climate warming and exposure pollutants being two of these. For polar bears, one the main effects is limited access prey, due loss their sea ice habitat. This will result in prolonged fasting periods emaciation condition related negative on survival reproduction success. Prolonged increases tissue concentrations persistent organic (POPs) thus increase probability for POP levels exceed threshold health, reproductive...
ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 27:113-118 (2015) - DOI: https://doi.org/10.3354/esr00655 NOTE Key research questions of global importance for cetacean conservation E. C. M. Parsons1,*, S. Baulch2, T. Bechshoft3,4, G. Bellazzi5, P. Bouchet6, A. Cosentino5, J. Godard-Codding7, F. Gulland8, Hoffmann-Kuhnt9, Hoyt10, Livermore11, D. MacLeod12,...
Legacy organochlorine contaminants were determined in adipose tissues from 294 polar bears (Ursus maritimus) sampled East Greenland 23 of the 28years between 1983 and 2010. Of 19 major legacy congeners (ΣPCB, 4 PCB (CB153, 180, 170/190), ΣDDT, p,p'-DDE, p,p' -DDD p,p'-DDT, α- β-hexachlorocyclohexane (HCH), HCB, octachlorostyrene, dieldrin, oxychlordane, cis- trans-chlordane, trans-nonachlor, heptachlor epoxide BB-153), 18 showed statistically significant average yearly declines -4.4% (range:...
Brominated flame retardants were determined in adipose tissues from 294 polar bears (Ursus maritimus) sampled East Greenland 23 of the 28years between 1983 and 2010. Significant linear increases found for sum polybrominated diphenyl ether (ΣPBDE), BDE100, BDE153, hexabromocyclododecane (HBCD). Average 5.0% per year (range: 2.9-7.6%/year) subadult bears. BDE47 BDE99 concentrations did not show a significant trend over time, but rather non-linear peaking 2000 2004. The average ΣPBDE increased...
We developed a chemical analytical procedure for sampling, extracting and determining epidermal skin cortisol concentrations (SCCs) in the harbour porpoise (Phocoena phocoena) using gas chromatography–tandem mass spectrometry. In brief, this involved pressurized liquid extraction with two-step solid-phase clean-up. A derivatization step was conducted prior to detection. To evaluate new assay, analysed three different sample types obtained from four porpoises: plates, dorsal fin plugs (with...
Methylmercury is one of the more toxic forms mercury (Hg), biomagnification which prevalent in Arctic where apex predators such as polar bears (Ursus maritimus) can carry high loads. The maternal transfer contaminants to offspring a concern, may be particularly sensitive effects environmental pollutants during early development. However, few studies report on Hg dependent young. We examined hair total (THg) concentrations 24 bear family groups western Hudson Bay: mother, cub-of-the-year...
A previously published analytical method demonstrated the quantification of hormone cortisol in cetacean skin. However, little is known about transfer hormones between blood and Recognizing that such information essential to effectively using skin samples within marine mammal stress research, primary goals this study were (i) expand on number steroid proved quantifiable matrix (ii) validate use as a for measuring stress-related hormones. Five adult bottlenose dolphins subjected an out water...
Analysis of faecal glucocorticoid metabolites (FGMs) is frequently applied to assess adrenocortical activity in animal conservation and welfare studies. Faecal sample collection non-invasive feasible under field conditions. FGM levels are also less prone circadian rhythms, episodic fluctuations short acute stressors than (GC) obtained from other matrices, for example blood or saliva. To investigate the suitability measurement polar bears (Ursus maritimus), a species listed as Vulnerable by...
We present an example of background statistics in studies fluctuating asymmetry (FA); calculations asymmetry, measurement error (ME), and repeatability. Nine bilateral metric traits skulls lower jaws 691 East Greenland Svalbard polar bears (Ursus maritimus) were measured twice, examined for asymmetry. The collected the period 1892–2004. In this study, 2.0% FA data identified treated as outliers, which is less than comparable studies. each trait amounted to 0.1%–3% average size corresponding...
Fluctuating asymmetry (FA) as a measure of environmental stress was studied in polar bear (Ursus maritimus) skulls from East Greenland (n = 300, collected 1892–2004) and Svalbard 391, 1950–2004). Nine metric traits skull lower jaw were measured. FA levels each trait compared between sex/age groups (subadults, adult females, males), periods (≤ 1960, ≥ 1960), localities (East Greenland, Svalbard). The period ≤ 1960 chosen to represent prior the appearance organohalogen pollution Arctic....