1. Norwegian Polar Institute, Polar Environmental Centre, 9296 Tromsø, Norway, Centre of Excellence in Evolutionary Genetics and Physiology, Department of Biology, University of Turku, 20014 Turku, Finland, Wildlife Toxicology and Disease Program, Wildlife and Landscape Science Directorate, Science and Technology Branch, Environment Canada, National Wildlife Research Centre, Carleton University, Ottawa, Ontario, K1A 0H3, Canada, Department of Biology, Norwegian University of Science and Technology, 7491...