Results 121 to 130 of about 4,578 (167)
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Growth in Northwest Atlantic Harp seals Phoca groenlandica
Journal of Zoology, 1981Morphometric data were collected from 204 Northwest Atlantic Harp seals aged one month and older sampled between 1976 and 1979. Length as a function of age gave the most precise measure of body size. Lean body (core) weight and total body weight were more variable measures of growth.
S. Innes +2 more
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Individuality in harp seal, Phoca groenlandica, pup vocalizations
Animal Behaviour, 2004In gregarious breeders, parents often use individually stereotyped vocalizations as a cue to relocate offspring. Harp seals aggregate in large colonies on pack ice during the whelping season. During the 11-day lactation period, females alternate between periods at sea and attending their pup. If they use vocal cues in the relocation process, individual
Van Opzeeland, I C, Van Parijs, S M
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In Vivo Calcification of Glutaraldehyde-Fixed Cardiac Valve and Pericardium of Phoca groenlandica
ASAIO Journal, 2011Calcification remains the main reason for failure of bioprosthetic valves. The aim of this study was to evaluate the in vivo calcification response of a new bioprosthetic valve, derived from cardiac tissue of Phoca groenlandica. Aortic and pulmonary leaflets, bovine, and Phoca groenlandica pericardia were fixed in buffered glutaraldehyde solution ...
E Andreas, Agathos +4 more
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Pollutants in harp seals (Phoca groenlandica). II. Heavy metals and selenium
Science of The Total Environment, 1984Between 1976 and 1978, 249 harp seals were sampled from five locations in the Northwest Atlantic and Arctic for heavy metal and selenium residue analyses in tissue. Significant loading was apparent only in blood, brain, kidney, liver and muscle. Samples were analysed for mercury (Hg), selenium (Se), copper (Cu), cadmium (Cd) and lead (Pb).
K, Ronald +4 more
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Fatty acid composition of the harp seal, pagophilus groenlandicus (phoca groenlandica)
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1974Abstract 1. 1. Fatty acid composition of blubber, liver skeletal muscle, heart muscle, aorta, brain and testis has been detailed in harp seals. 2. 2. Each of the tissues examined shows a specific saturated, monoenoic, dienoic and polyenoic fatty acid composition, although differing in degree. 3. 3. The ratios of 16:0 16:1 , 20:5 (
F R, Engelhardt, B L, Walker
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Temperature regulation in freely diving harp seals (Phoca groenlandica)
Canadian Journal of Zoology, 1979Measurements were made of the relation between body temperature, respiration, diving pattern, and water temperature using three adult harp seals (Phoca groenlandica). Core temperature, ventilation, gas exchange, and diving pattern were not affected by water temperature ranging from 1.8 to 28.2 °C.
G J, Gallivan, K, Ronald
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EFFECTS OF HANDLING STRESS ON PLASMA ENZYMES IN HARP SEALS, Phoca groenlandica
Journal of Wildlife Diseases, 1979Three harp seal pups, Phoca groenlandica, were captured on the ice of the Gulf of St. Lawrence, and subjected to 3 h of transportation and handling stress. The activities of creatine kinase (CK), aspartate aminotransferase (AspAT), aldolase, alanine aminotransferase, gamma glutamyl transpeptidase, and leucine aminopeptidase were determined in serial ...
D J, St Aubin, T P, Austin, J R, Geraci
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Immobilization of harp seals, Phoca groenlandica, by intravenous injection of ketamine
Comparative Biochemistry and Physiology Part C: Comparative Pharmacology, 1977Abstract 1. Ketamine hydrochloride was used intravenously for immobilization of young harp seals, Phoca groenlandica. 2. Induction and recovery were very rapid, with good control of dose strength over duration and degree of immobilization. 3. An effective range of 0.5–7.5 mg/kg total body weight is suggested.
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Dental ontogeny of harp seals, Phoca groenlandica
Canadian Journal of Zoology, 1987Harp seal fetuses and neonates were examined to determine the development, resorption, and eruption characteristics of deciduous and permanent dentition. Early September fetuses had recently formed, deciduous teeth only. By early December the deciduous dentition was robust and enameled. Permanent teeth were also present.
R. E. A. Stewart, B. E. Stewart
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Apparent specific dynamic action in the harp seal (Phoca groenlandica)
Comparative Biochemistry and Physiology Part A: Physiology, 1981Abstract 1. 1. SDA increased the metabolic rate of a female harp seal up to 1.67 times, and the metabolic rate was increased for at least 7 hr. 2. 2. The magnitude and duration of the increase in metabolic rate were dependent upon the ration size. 3. 3. The apparent SDA was approx. 17% of the gross energy of the diet.
G.J. Gallivan, K. Ronald
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