منابع مشابه
Genetic variability in Guadalupe fur seals.
The Guadalupe fur seal (Arctocephalus townsendi) population underwent one or two severe bottlenecks due to commercial sealing in the late 19th century. Since then the protected population has been growing steadily around their only rookery, Isla de Guadalupe, Mexico. We probed both nuclear and mitochondrial genomes using multilocus nuclear DNA profiling and mitochondrial DNA sequencing to estim...
متن کاملUtilisation of Intensive Foraging Zones by Female Australian Fur Seals
Within a heterogeneous environment, animals must efficiently locate and utilise foraging patches. One way animals can achieve this is by increasing residency times in areas where foraging success is highest (area-restricted search). For air-breathing diving predators, increased patch residency times can be achieved by altering both surface movements and diving patterns. The current study aimed ...
متن کاملExtreme weather events influence dispersal of naive northern fur seals.
Since 1975, northern fur seal (Callorhinus ursinus) numbers at the Pribilof Islands (PI) in the Bering Sea have declined rapidly for unknown reasons. Migratory dispersal and habitat choice may affect first-year survivorship, thereby contributing to this decline. We compared migratory behaviour of 166 naive pups during 2 years from islands with disparate population trends (increasing: Bogoslof a...
متن کاملThe Dynamics of Hookworm Disease in Northern Fur Seals
blood and enter the bronchi of the lungs. There they are coughed up through the trachea into the throat and swallowed. This is referred to as the pulmonary route of infection and historically had been considered the only route of hookworm infection. In the small and large intestine the worms attach to the wall of the intestine and suck blood, mature, and lay eggs, which pass out with the feces ...
متن کاملHematology of free-ranging, lactating northern fur seals, Callorhinus ursinus.
Thirteen standard hematology values were determined for a healthy and growing population of free-ranging, lactating northern fur seals (Callorhinus ursinus) from Lovushki Island in the Kuril Islands of far-east Russia. Results are presented from 24 females sampled between June and August during the 3-yr period of 2006-08. Hematologic values have been made available for future comparisons with t...
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ژورنال
عنوان ژورنال: Nature
سال: 2014
ISSN: 0028-0836,1476-4687
DOI: 10.1038/511414a