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  • 1
    Electronic Resource
    Electronic Resource
    Characterization and chemical modification of the Na^+-dependent bile-acid transport system in brush-border membrane vesicles from rabbit ileum
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 1111 (1992), S. 93-102 
    Details
    ISSN: 0005-2736
    Keywords: (Rabbit) ; Bile acid transport ; Chemical modification ; Ileum ; Photoaffinity labeling ; Small intestine
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0005-2736(92)90278-T
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  • 2
    Electronic Resource
    Electronic Resource
    Optimal neural population coding of an auditory spatial cue (2004)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 430 (2004), S. 682-686 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A sound, depending on the position of its source, can take more time to reach one ear than the other. This interaural (between the ears) time difference (ITD) provides a major cue for determining the source location. Many auditory neurons are sensitive to ITDs, but the means by which such ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature02768
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  • 3
    Electronic Resource
    Electronic Resource
    Metabolic properties of low ATP erythrocytes of the monotremes
    Amsterdam : Elsevier
    FEBS Letters 167 (1984), S. 83-87 
    Details
    ISSN: 0014-5793
    Keywords: ATP synthesis ; Glycolysis ; Monotreme erythrocyte
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0014-5793(84)80837-6
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  • 4
    Electronic Resource
    Electronic Resource
    Active cation transport and Na+K+Mg ATPase of the monotreme erythrocytes
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 119 (1984), S. 1161-1167 
    Details
    ISSN: 0006-291X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0006-291X(84)90897-0
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  • 5
    Electronic Resource
    Electronic Resource
    Respiratory properties of the blood of the little penguin Eudyptula minor
    Amsterdam : Elsevier
    Comparative Biochemistry and Physiology -- Part A: Physiology 98 (1991), S. 17-21 
    Details
    ISSN: 0300-9629
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0300-9629(91)90570-3
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  • 6
    Electronic Resource
    Electronic Resource
    Chitin production by krill
    Amsterdam : Elsevier
    Biochemical Systematics and Ecology 21 (1993), S. 181-184 
    Details
    ISSN: 0305-1978
    Keywords: Antarctic krill ; Chitin ; Euphausia superba ; Nyctiphanes australis ; krill ; production rates
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0305-1978(93)90035-P
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  • 7
    Electronic Resource
    Electronic Resource
    Changes in the digestive gland of Euphausia superba during short-term starvation: lipid class, fatty acid and sterol content and composition (1993)
    Springer
    Marine biology 117 (1993), S. 441-448 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract During a period of short-term (19 d) starvation, total lipid in the digestive gland of Euphausia superba Dana decreased from 21 to 9% dry weight. Total lipid per digestive gland decreased significantly during starvation compared to Day 0 individuals, falling from 1960 (±172) to 385 (±81) μg. Polar lipid was the major lipid class utilised during starvation, falling from 1510 (±225) to 177 (±46) μg per digestive gland (76 to 45%). Absolute levels of triacylglycerol fell from 300 (±41) to 76 (±5) μg; however, relative levels remained unchanged. The relative level of free fatty acid increased significantly with starvation (4 to 39%) with absolute levels ranging from 79 (±1) to 156 (±20) μg per digestive gland. Absolute levels of all fatty acids per digestive gland declined continually until the end of the starvation period. The long-chain polyunsaturated acids eicosapentaenoic (20:5ω3) and docosahexaenoic (22:6ω3), decreased with starvation from 37 to 26% and 15 to 10%, respectively whereas the saturated fatty acid, palmitic acid (16:0), increased from 15 to 20%. Cholesterol, the major sterol in this organ, increased from 17 (±20) to 44 (±13) μg per digestive gland by Day 3, and by Day 19 had returned to levels found in the digestive gland of Day 0 individuals. Desmosterol followed a similar pattern to cholesterol, increasing from 3 (±1) μg per digestive gland on Day 0 to 11 (±4) μg on Day 3, and falling to 2 (±1) μg on Day 19. Other sterols in the digestive gland, predominantly of algal origin, fell from the levels found in Day 0 individuals to near zero amounts by Day 6. The digestive gland of E. superba plays a dynamic role during shortterm starvation in terms of lipid content and composition. The relative levels of polar lipids, free fatty acids and cholesterol in the digestive gland may provide reliable indices of the nutritional condition of E. superba in the field. Sterols in the digestive gland are indicative of recent dietary composition of krill, and may also be used to quantify dietary input from individual phytoplanktonic species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00349320
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  • 8
    Electronic Resource
    Electronic Resource
    Reproductive trade-off in male Antarctic krill, Euphausia superba (1996)
    Springer
    Marine biology 126 (1996), S. 521-527 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Freshly caught male and female Euphausia superba from the same swarm exhibited different rates of mortality subsequent to capture. Mortality was significantly higher for reproductive males (100%, n=68) than for females (3%, n=186) within the first 3 d of capture. Total lipid and triacylglycerol levels in male, female and juvenile Euphausia superba were analysed and compared. All reproductive male krill analysed from this swarm had low lipid levels (1 to 3% dry weight) with negligible triacylglycerol stores (0 to 2% of total lipid). Somatic lipid stores in female and juvenile krill ranged from 8 to 30% of which up to 40% was triacylglycerol. The levels of algal sterols in the digestive gland of males, females and juveniles indicate that all krill had been feeding recently. An analysis of the sex ratio of krill catches derived from data collected over seven summers from the Prydz Bay region showed a decrease in the proportion of males with increasing size. There was a sharp decline in numbers of male krill once they attained a length of 51 to 55 mm. Low lipid levels in redroductive male krill may be due to reproductive costs. The resulting low storage-lipid levels are accompanied by high mortality in male krill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00354634
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  • 9
    Electronic Resource
    Electronic Resource
    Fluoride in Antarctic marine crustaceans (1998)
    Springer
    Marine biology 132 (1998), S. 591-598 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The concentration of fluoride in the body parts of a range of Antarctic crustaceans from a variety of habits was examined with the aim of determining whether fluoride concentration is related to lifestyle or phylogenetic grouping. Euphausiids had the highest overall fluoride concentrations of a range of Antarctic marine crustaceans examined; levels of up to 5477 μg g−1 were found in the exoskeleton of Euphausia crystallorophias. Copepods had the lowest fluoride levels (0.87 μg g−1 whole-body); some amphipods and mysids also exhibited relatively high fluoride levels. There was no apparent relationship between the lifestyle of the crustaceans and their fluoride level; benthic and pelagic species exhibited both high and low fluoride levels. Fluoride was concentrated in the exoskeleton, but not evenly distributed through it; the exoskeleton of the head, carapace and abdomen contained the highest concentrations of fluoride, followed by the feeding basket and pleopods, and the eyes. The mouthparts of E.␣superba contained almost 13 000 μg F g−1 dry wt. Antarctic krill tail muscle had low levels of fluoride. After long-term (1 to 5 yr) storage in formalin, fluoride was almost completely lost from whole euphausiids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002270050424
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  • 10
    Electronic Resource
    Electronic Resource
    A refinement of the moult-staging technique for Antarctic krill (Euphasia superba) (1990)
    Springer
    Marine biology 104 (1990), S. 169-173 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The moult-staging technique for euphausiids developed by Buchholz was examined experimentally to obtain estimates of the relative duration of each of the constituent stages. The method entailed removing uropods from indiviually maintainedEuphausia superba Dana on the day of moulting and for each day post-moult, and examining them microscopically to determine the moult stage. The krill were kept alive following uropod removal until the next moult so that the stage observed in the excised uropod could be referenced to both ends of the moult cycle for each individual examined. The proportion of the moult cycle occupied by each stage at 0°C was thereby calculated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01313170
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