Growth and population parameters of ringed seals (Pusa hispida) from Svalbard, Norway, 2002–2004
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چکیده
منابع مشابه
Psychoacoustic Studies of Spotted (Phoca largha) and Ringed (Pusa hispida) Seals.
Human development of the marine environment raises questions regarding the potential adverse effects of anthropogenic noise on marine mammals. For species that live in remote Arctic regions, recent and expanding human intrusions may pose a particular threat. Northern seals are poorly studied relative to their temperate counterparts and little is known of their acoustic ecology or behavior. Give...
متن کاملAmphibious hearing in ringed seals (Pusa hispida): underwater audiograms, aerial audiograms and critical ratio measurements.
Ringed seals (Pusa hispida) are semi-aquatic marine mammals with a circumpolar Arctic distribution. In this study, we investigate the amphibious hearing capabilities of ringed seals to provide auditory profiles for this species across the full range of hearing. Using psychophysical methods with two trained ringed seals, detection thresholds for narrowband signals were measured under quiet, care...
متن کاملCadmium toxicity to ringed seals (Phoca hispida)
Cadmium concentrations in kidneys from ringed seals (Phoca hispida) from North West Greenland (Qaanaaq) are high. Concentrations range at level known to induce renal toxic effects (mainly tubulopathy) and demineralisation (osteopenia) of the skeletal system (Fanconi’s Syndrome) in humans as well as laboratory mammals. We have studied possible cadmium induced histopathological changes in the kid...
متن کاملBioaccumulation and biotransformation of brominated and chlorinated contaminants and their metabolites in ringed seals (Pusa hispida) and polar bears (Ursus maritimus) from East Greenland.
We report on the comparative bioaccumulation, biotransformation and/or biomagnification from East Greenland ringed seal (Pusa hispida) blubber to polar bear (Ursus maritimus) tissues (adipose, liver and brain) of various classes and congeners of persistent chlorinated and brominated contaminants and metabolic by-products: polychlorinated biphenyls (PCBs), chlordanes (CHLs), hydroxyl (OH-) and m...
متن کاملPersistent Organochlorine Contaminants in Ringed Seals (phoca Hispida) from the Kara Sea, Russian Arctic
Ringed seals collected from the Kara Sea in the Russian Arctic during 1995 were analyzed for persistent organochlorines (OCs) such as DDTs, polychlorinated biphenyls (PCBs), chlordane compounds (CHLs), hexachlorocyclohexanes (HCHs), and hexachlorobenzene to understand the present status of contamination. Noticeably higher levels of DDTs and PCBs were detected in ringed seals from the Russian Ar...
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ژورنال
عنوان ژورنال: ICES Journal of Marine Science
سال: 2006
ISSN: 1095-9289,1054-3139
DOI: 10.1016/j.icesjms.2006.04.001