6505 to 6516 of 14024 results
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Time budgets and foraging characteristics of lactating Antarctic fur seals
Read more of: Time budgets and foraging characteristics of lactating Antarctic fur seals(1) We investigated time allocation to parental care ashore and foraging at sea by lactating Antarctic fur seals at Bird Island, South Georgia, during 1988-89 and 1989-90 and related this […]
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Mass changes and metabolism in territorial male Antarctic fur seals (Arctocephalus gazella)
Read more of: Mass changes and metabolism in territorial male Antarctic fur seals (Arctocephalus gazella)Energy expenditure of fasting territorial male Antarctic fur seals at South Georgia was measured by mass loss and analysis of carcass composition using tritium dilution in 1987 and 1988. Mean […]
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Diving behaviour in relation to water temperature in the southern elephant seal: foraging implications
Read more of: Diving behaviour in relation to water temperature in the southern elephant seal: foraging implicationsA time-depth-temperature recorder provided a continuous record of diving by a female southern elephant seal in relation to water temperature for 27 days (1939 dives) after completion of moult. Mean […]
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Environmental and physiological factors controlling the reproductive cycles of pinnipeds
Read more of: Environmental and physiological factors controlling the reproductive cycles of pinnipedsThe reproductive pattern of pinnipeds is characterised by embryonic diapause, annual reproduction, and synchronous breeding cycles. Active gestation lasts about 8 months in most species, but the duration of embryonic […]
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Changes in plasma progesterone and prolactin concentrations during the annual cycle and the role of prolactin in the maintenance of lactation and luteal development in the Antarctic fur seal (Arctocephalus gazella)
Read more of: Changes in plasma progesterone and prolactin concentrations during the annual cycle and the role of prolactin in the maintenance of lactation and luteal development in the Antarctic fur seal (Arctocephalus gazella)Progesterone in Antarctic fur seals was undectable from 1–2 days before parturition to 4–6 days after parturition. There was a rapid increase in progesterone to 20 ng/ml between 6 and […]
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Stratigraphic and paleoclimatic studies of a 5500-Year-old moss bank on Elephant Island, Antarctica
Read more of: Stratigraphic and paleoclimatic studies of a 5500-Year-old moss bank on Elephant Island, AntarcticaAnalyses of a core from the deepest known moss peat bank in Antarctica, on Elephant Island, South Shetlands, show that this Chorisodontium aciphyllum-dominated bank began to grow ca. 5500 14C […]
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The intense magnetic storm of December 19, 1980: Observations atL= 4
Read more of: The intense magnetic storm of December 19, 1980: Observations atL= 4The intense magnetic storm of December 19, 1980 occurred during a major rocket and balloon geophysical research campaign at Siple Station, Antarctica. A balloon flight measuring the electric field and […]
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Muscle growth in the Antarctic teleost, Notothenia neglecta (Nybelin)
Read more of: Muscle growth in the Antarctic teleost, Notothenia neglecta (Nybelin)A histochemical and electron microscopy study was carried out on muscle growth in demersal stages of the Antarctic teleost Notothenia neglecta Nybelin. The total number of myotomal muscle fibres was […]
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