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  • Copernicus  (26)
  • Oxford University Press  (12)
  • Nature Publishing Group  (9)
  • EDP Sciences  (7)
  • American Association for the Advancement of Science  (5)
  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 269 (1977), S. 507-509 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table 1 Cadmium residues in individual St Kildan seabirds Species Cadmium concentration Sex (mgper kg dry wt) Liver Kidney Fulmar \*3 9.1 46.7 Fulmarus glacialis 2*c_ 50.1 184 3 3 7.7 32.8 4 V 49.4 240 Manx shearwater Puff 'in us puffinus 1U 21 £ 26.0 39.9 133 231 3 ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 257 (1975), S. 161-161 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] HEBERT ET AL. REPLY-Since diffuse competition in Lepidoptera, as we view it, is the result of long term coevolution among lepidopterans, their food plants, predators and parasites, we would not expect these interactions to be strong in highly disturbed communities. The importance of analysing ...
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 215 (1967), S. 964-965 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] M. dubius was maintained in the laboratory using cockroaches, Periplaneta americana, as the intermediate hosts, and Wistar rats as the final hosts. Adult worms 42?57 days old were recovered from the rats and washed thoroughly in Tyrode saline, before being incubated in Tyrode saline containing ...
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 170 (1952), S. 936-936 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] 3: 4-Anhydro-a-methyl-D-lyxoside (II) was formed by treatment of 4-tosyl-a-methyl-D-lyxoside (I) with sodium methoxide. Scission of the ethylene oxide ring with hydrogen bromide in acetone was expected to yield two derivatives6, 4-bromo-a-methyl-D-lyxoside (III) and 3-bromo-p-methyl-L-xyloside ...
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 249 (1974), S. 366-367 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In Quelea quelea, as in other birds1, the thymus consists of a number of lobes well separated from one another in two long chains one on each side of the neck. In embryos about to hatch each lobe was found to be small (less than 1 mm long) and white; but by the age of 10 d, 17 out of 60 individuals ...
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 247 (1974), S. 108-109 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It seemed from these findings that substance P at the nerve endings might be released and lead to the activation or release of kallikrein. Kallikrein has been demonstrated in a variety of tissues which produce a liquid secretion such as salivary glands9, small intestine10, pancreas11, sweat ...
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 252 (1974), S. 389-391 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The relationship between intensity of competition and species abundance is not likely to be a simple one. Much depends on the limiting factors involved in the competition. The abundance of resource-limited species is, on the short run at least, related to the abundance of the resource. The data ...
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 201 (1964), S. 611-612 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The purification of this solid fluoro-acid has now been improved. It was first separated from fluoro-oleic acid by freezing, thawing and high-speed centrifuging as already described1. The residue was dissolved in 45 ml. of acetone and any insoluble material removed by centrifuging. After ...
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 216 (1967), S. 592-593 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In this work, I used short lengths of small diameter wire, consisting of tantalum-182 sheathed in platinum. Tantalum-182 has a half-life of 115 days. The lengths are fixed to the usual aluminium bird rings with a suitable adhesive. By using rings with two strengths of radioactive label-one is ...
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  • 10
    Publication Date: 2014-09-12
    Description: Estimating growth and production rates of mesozooplankton, and copepods in particular, is important in describing flows of material and energy though pelagic systems. Over the past 30 years, the Moult Rate (MR) method has been used to estimate juvenile copepod growth rates in ~40 papers. Yet the MR method has been shown to have serious flaws. Here we re-examine the results from the majority of published MR method studies and re-estimate growth rates using the modified Moult Rate (MMR) method, which ascribes changes in mass to the appropriate time period over which it was accrued. The MR method has typically over-estimated growth rates (on 80% of occasions) for life stages where the subsequent stage is actively moulting; the median and mean MR values are 138 and 164%, respectively, of the corrected MMR values. We were unable to correct the original data for life stages that are followed by a non-moulting stage, e.g. copepodite stage 5 to adult. We performed experiments with Calanus pacificus to estimate growth of stage C5 using an alternative method. We found that the error size and sign varied between mass type (i.e. DW, C and N). Recommendations for practical future assessments of growth in copepods are made.
    Print ISSN: 0142-7873
    Electronic ISSN: 1464-3774
    Topics: Biology
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