Results 101 to 110 of about 357 (144)
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The eye of the hooded seal,Cystophora cristata, in air and water
Journal of Comparative Physiology A, 1989Multiple refractive state measurements were made on a male and female hooded seal (Cystophora cristata) when the eyes were exposed to air and to water. The measures, made by conventional retinoscopy and by photorefraction, show that the seals are moderately hyperopic (2-3 diopters) in water and moderately myopic (2-4 diopters) in air.
J G, Sivak +3 more
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Vitamin D Metabolism in the Hooded Seal (Cystophora cristata)
The Journal of Nutrition, 1988Fish-eating mammals, such as seals, appear to ingest levels of vitamin D that are toxic to most mammals. To determine how seals cope with high vitamin D intakes, the metabolism of tritiated cholecalciferol ([3H]D3) was investigated in hooded seal (Cystophora cristata) pups during their postweaning fast and pups and adults consuming herring alone or ...
K M, Keiver, H H, Draper, K, Ronald
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The respiratory properties of the blood of the bladdernose seal (Cystophora cristata)
Respiration Physiology, 1969Abstract The blood of about three months old Cystophora had an O2 capacity of 36 vol %. RBC was normal, 4.8 × 106/mm3, but Hct and Hb content were very high, 63 % and 26.4 g /100 ml. When calculating the MCV as Hct/RBC × 10 and from the Price-Jones curve the mean values were 131 and 135 μ3.
G, Clausen, A, Ersland
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Systemic Mucormycosis in a Hooded Seal (Cystophora cristata)
Journal of Zoo and Wildlife Medicine, 2011A 4-yr-old male captive hooded seal (Cystophora cristata), previously diagnosed as hypothyroid, died after a 3-wk period of lethargy and inappetance despite treatment that included intramuscular administration of antibiotics and multivitamins. Gross pathologic findings included extensive muscle necrosis over the left flank, an underlying necrotic iliac
James E F, Barnett +5 more
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The Hood of the Hooded Seal, Cystophora cristata Erxl.
Nature, 1958IT is well known that the male of the hooded seal, Cystophora cristata, can inflate its hood, which is the greatly enlarged skin of the snout. It is also known that the male hooded seal can extrude an assumed pair of fiery red bladders or balloons through his nose.
exaly +2 more sources
Cystophora cristata (Hooded seal)
1973These karyotypes are gifts of Dr. U. Arnason, Lund, Sweden, and were prepared from solid tissue culture by the orcein squash method. The male came from Kulusuk, Greenland, and the female, from Newfoundland, Canada.
T. C. Hsu, Kurt Benirschke
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Narcotics in hooded seals (Cystophora cristata): a preliminary report
Canadian Journal of Zoology, 1979Immobilizing darts containing either of the narcotics fentanyl or etorphine were used on 15 adult hooded seals (Cystophora cristata Erxleben). Of these seals, 13 were successfully tagged. The narcotic antagonist naloxone was administered to all seals.
J C, Haigh, R E, Stewart
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Panmictic population structure in the hooded seal (Cystophora cristata)
Molecular Ecology, 2007AbstractTwo putative populations of hooded seals (Cystophora cristata) occur in the North Atlantic. The Greenland Sea population pup and breed on the pack ice near Jan Mayen (‘West Ice’) while the Northwest Atlantic population is thought to pup in the Davis Strait, in the Gulf of St.
D W, Coltman +5 more
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Observations On Nursing Behaviour of Hooded Seals, Cystophora Cristata
Behaviour, 1992Abstract This study reports the first quantitative data on nursing behaviour of hooded seals which have a four-day nursing period, the shortest known for any mammal. Twenty mother pup-pairs were observed at a whelping patch off the coast of Newfoundland, Canada during March, 1990.
Elizabeth A. Perry, Garry B. Stenson
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Biological Trace Element Research, 1990
The liver of Hooded Seal (Cystophora cristata) consists of six lobes of unequal sizes. Extensive sampling by means of cutout samples covering the depth horizon 2-30 mm below liver surface indicates that the liver may be considered homogeneous as to concentrations of zinc, cadmium, mercury, and selenium (residuals of overall mean compatible with ...
Rune Dietz
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The liver of Hooded Seal (Cystophora cristata) consists of six lobes of unequal sizes. Extensive sampling by means of cutout samples covering the depth horizon 2-30 mm below liver surface indicates that the liver may be considered homogeneous as to concentrations of zinc, cadmium, mercury, and selenium (residuals of overall mean compatible with ...
Rune Dietz
exaly +3 more sources