Age-Specific Growth and Remarkable Longevity in Narwhals (Monodon monoceros) from West Greenland as Estimated by Aspartic Acid Racemization
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چکیده
منابع مشابه
Aspartic acid racemization rate in narwhal (Monodon monoceros) eye lens nuclei estimated by counting of growth layers in tusks
Aspartic acid racemization rate in narwhal (Monodon monoceros) eye lens nuclei estimated by counting of growth layers in tusks Eva Garde, Mads Peter Heide-Jørgensen, Susanne Ditlevsen & Steen H. Hansen 1 Center for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade 5 7, DK-1350 Copenhagen Ø, Denmark 2 Greenland Institute of Natural Resources, PO Box 570, DK...
متن کاملParadoxical escape responses by narwhals (Monodon monoceros).
Until recent declines in Arctic sea ice levels, narwhals (Monodon monoceros) have lived in relative isolation from human perturbation and sustained predation pressures. The resulting naïvety has made this cryptic, deep-diving cetacean highly susceptible to disturbance, although quantifiable effects have been lacking. We deployed a submersible, animal-borne electrocardiograph-accelerometer-depth...
متن کاملWinter Feeding Intensity of Narwhals (monodon Monoceros)
Stomach contents from 121 narwhals (Monondon monoceros) harvested in the eastern Canadian High Arctic and West Greenland were used to quantify seasonal changes in feeding activity and prey selection. Stomachs collected from summer harvests were mostly empty with little evidence of recent feeding. Stomachs collected in late fall and winter harvests had considerable amounts of undigested material...
متن کاملAbundance of narwhals (Monodon monoceros) on the hunting grounds in Greenland
Greenland Institute of Natural Resources, Bok 570, 3900 Nuuk, Greenland (MPH, KLL, RGH) RUWPA, University of St Andrews, The Observatory, Buchanan Gardens KY16 9LZ, United Kingdom (MLB, DLB, TAM) Polar Science Center, Applied Physics Laboratory, University of Washington, 1013 NE 40th Street, Seattle, WA 98105, USA (KLL) Húsavik Research Center, University of Iceland, Hafnarstétt 3, 640 Húsavik,...
متن کاملPopulation structure of West Greenland narwhals
The hypothesis that different populations of narwhals in the West Greenland area exist has been tested by different biomarkers (metal and organochlorine concentrations, stable isotopes and DNA). Samples of muscle, liver, kidney, blubber and skin tissues of narwhals from West Greenland have been analysed for heavy metals, organochlorines, stable isotopes and DNA. The obtained results of metal co...
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ژورنال
عنوان ژورنال: Journal of Mammalogy
سال: 2007
ISSN: 0022-2372,1545-1542
DOI: 10.1644/06-mamm-a-056r.1