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  • Springer Nature  (38,065)
  • Blackwell Publishing Ltd  (16,118)
  • Cambridge University Press  (9,922)
  • 1975-1979  (44,567)
  • 1935-1939  (19,538)
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  • 1
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    Molar Growth Yields, Respiration and Cytochrome Patterns of Beneckea natriegens when Grown at Different Medium Dissolved-oxygen Tensions (1975)
    Cambridge University Press
    In:  Journal of General Microbiology, 90 (2). pp. 237-246.
    Details
    Publication Date: 2020-07-24
    Description: The effect of medium dissolved-oxygen tension on the molar growth yield, respiration and cytochrome content of Beneckea natriegens in chemostat culture (D 0·37 hr-1) was examined. The molar growth yield (Y), the specific rate of oxygen (qo2) and glucose consumption, and the specific rate of carbon dioxide evolution were independent of the dissolved-oxygen tension above a critical value (〈 2 mmHg). However, the potential respiration rate increased with reduction in the dissolved-oxygen tension at values of the dissolved-oxygen tension well above the critical value. Changes in the cytochrome content occurred at dissolved-oxygen tensions well above the critical value. An increase in cytochrome c relative to cytochrome b was observed as the dissolved-oxygen tension was decreased. Reduction of the dissolved-oxygen tension to less than 1 mmHg caused a switch to fermentative metabolism shown by the apparent rise in Y o2 and decrease in the molar growth yield from glucose. At this point the potential respiration rate (q o2) increased to its highest value, while the cytochrome pattern reverted to that observed at dissolved-oxygen tensions above 96 mmHg. There appeared to be no correlation between cytochrome content, potential q o2, in situ q o2, and cyanide sensitivity of the organism at various dissolved-oxygen tensions.
    Type: Article , PeerReviewed
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  • 2
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    Digenetic Trematodes in Cephalopods (1975)
    Cambridge University Press
    In:  Journal of the Marine Biological Association of the United Kingdom, 55 (4). pp. 893-910.
    Details
    Publication Date: 2020-07-23
    Type: Article , PeerReviewed
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  • 3
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    Structure and preliminary biochemical characterization of the bioluminescent system of Ommastrephes pteropus (Steenstrup) (Mollusca: Cephalopoda) (1976)
    Cambridge University Press
    In:  Journal of the Marine Biological Association of the United Kingdom, 56 (03). pp. 707-722.
    Details
    Publication Date: 2020-07-16
    Description: The ommastrephid squids are large active animals occurring in most of the world's oceans. Luminous organs or bioluminescence have been observed only in members of the subfamily Sthenoteuthinae, containing the genera Ornithoteuthis, Symplectoteuthis (= Eucleoteuthis), Hyaloteuthis, Ommastrephes and Dosidicus. The light organs of Ommastrephes pteropus are small sub-spherical bodies randomly distributed over the ventral surface of the mantle, head, arms and tentacles (Roper, 1963) and are aggregated dorsally to form a large luminous patch (Clarke, 1965). Relatively little is known about the organs, capabilities and biochemistry of luminescence in cephalopods (Harvey, 1952; Herring, in Press), and the size of the light organ and availability of O. pteropus provide an unusual opportunity for such studies. Although among the molluscs the luminescent systems of the gastropod Latia and the bivalve Pholas have been partially characterized (Shimomura & Johnson, 1968; Henry, Isambert & Michelson, 1970, 1973) the only cephalopod system which has been investigated to date is that of the enoploteuthid Watasenia scintillans (Goto et al., 1974; Inoue et al., 1975). This investigation examines the anatomy and biochemistry of the dorsal light organ of O. pteropus, which differs markedly in these respects from the brachial organs of Watasenia.
    Type: Article , PeerReviewed
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  • 4
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    On the use of ammonium for buoyancy in squids (1979)
    Cambridge University Press
    In:  Journal of the Marine Biological Association of the United Kingdom, 59 (02). p. 259.
    Details
    Publication Date: 2020-07-16
    Description: Squids (teuthoids) fall into two distinct groups according to their density in sea water. Squids of one group are considerably denser than sea water and must swim to stop sinking; squids in the other group are nearly neutrally buoyant. Analyses show that in almost all the neutrally buoyant squids large amounts of ammonium are present. This ammonium is not uniformly distributed throughout the body but is mostly confined to special tissues where its concentration can approach half molar. The locations of such tissues differ according to the species and developmental stage of the squid. It is clear that the ammonium-rich solution are almost isosmotic with sea water but of lower density and they are present in sufficient volume to provide the main buoyancy mechanism of these squids. A variety of evidence is given which suggests that squids in no less than 12 of the 26 families achieve near-neutral buoyancy in this way and that 14 families contain squids appreciably denser than sea water [at least one family contains both types of squid]. Some of the ammonium-rich squids are extremely abundant in the oceans.
    Type: Article , PeerReviewed
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  • 5
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    The cephalopod statolithan-introduction to its form (1978)
    Cambridge University Press
    In:  Journal of the Marine Biological Association of the United Kingdom, 58 (03). p. 701.
    Details
    Publication Date: 2020-07-16
    Description: Terms, dimensions and ratios for statolith description are defined. The form of the calcareousstatoliths in the Teuthoidea, Sepiodea and Octopoda is described by reference to Loligo forbesi, Sepia officinalis and Eledone cirrosa. While statoliths change in form and size during the growth of a cephalopod, the adult form is often characteristic for a species, despite some variation. Description of statoliths is important in studies of the fossil remains of cephalopods lacking calcareous shells, and will probably become important in the taxonomy of living species, in food analysis of cephalopod predators and in the study of deep sea deposits.
    Type: Article , PeerReviewed
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  • 6
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    Vertical distribution of cephalopods at 40°N, 53°N and 60°N at 20°W in the North Atlantic (1975)
    Cambridge University Press
    In:  Journal of the Marine Biological Association of the United Kingdom, 55 (01). pp. 143-161.
    Details
    Publication Date: 2020-07-16
    Description: Little work on vertical distribution of cephalopods was possible before the development, in the 1960s, of sophisticated opening-closing devices usable on midwater trawls such as the 10 ft Isaacs Kidd trawl (IKMT; Foxton, 1963; Aron et al. 1964) and the series of rectangular midwater trawls developed by the Institute of Oceanographic Sciences (previously the National Institute of Oceanography) (Clarke, 1969 a; Baker et al. 1973). These developments have resulted in three papers on vertical distribution of cephalopods in the North Atlantic (Clarke, 1969 ft; Gibbs & Roper, 1970; Clarke & Lu, 1974) and one for the Mediterranean (Roper, 1972). The present paper describes the vertical distribution of cephalopods caught at 40° N 20° W, 53° N 20° W and 60° N 20° W in the North Atlantic based upon day and night series of horizontal hauls between the surface and 2000 m using the RMT combination net (Baker et al. 1973).
    Type: Article , PeerReviewed
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  • 7
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    Vertical distribution of cephalopods at 18°N 25°W in the North Atlantic (1975)
    Cambridge University Press
    In:  Journal of the Marine Biological Association of the United Kingdom, 55 (01). pp. 165-182.
    Details
    Publication Date: 2020-07-16
    Description: The present work is part of an analysis of catches made with rectangular midwater trawls (RMTs) in the North Atlantic at about 20°W and at 60°N, 53°N, 40°N (all in Lu & Clarke, 1975), 30°N (Clarke & Lu, 1974), 18°N and 11°N (Lu & Clarke, 1975). The collections were made for the ecological programme of the National Institute of Oceanography, Wormley, England (now part of the Institute of Oceanographic Sciences).
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  • 8
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    Vertical distribution of cephalopods at 11°N, 20°W in the North Atlantic (1975)
    Cambridge University Press
    In:  Journal of the Marine Biological Association of the United Kingdom, 55 (02). pp. 369-389.
    Details
    Publication Date: 2020-07-16
    Description: This is one of a series of four papers dealing with vertical distribution of cephalopods in the North Eastern Atlantic at six stations near 20° W and at about 10° intervals from 60°N to 11° N (Clarke & Lu, 1974, 1975 a; Lu & Clarke, 1975). The present study is based upon a series of hauls made at discrete horizons between o and 2000 m with opening-closing nets during both daylight and darkness. The collections were made for the ecological programme of the National Institute of Oceanography, Wormley, Surrey, England (now part of the Institute of Oceanographic Sciences).
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  • 9
    Electronic Resource
    Electronic Resource
    THE TREATMENT OF “HOME OWNERSHIP” IN THE CPI (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Review of income and wealth 25 (1979), S. 0 
    Details
    ISSN: 1475-4991
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: This paper explores the imputed service price approach to the pricing of the services of consumer-owned-and-used durables in the construction of the consumer price index, using the services of owner-occupied housing as an illustration. A theoretical framework for analyzing this question is first developed. Certain practical problems are then discussed. The conceptual difficulty of constructing an appropriate rate of return on the basis of available data on interest rates and house prices, in the context of inflation, is explored. Two arguments are advanced that statistical agencies ought not to follow the imputed service price approach in pricing the services of owner-occupied dwellings and other consumer durables. On the one hand, nominal interest rates will, in any short period, reflect monetary policy and not any change in the money “rental” of owner-occupied houses. Second, movements in nominal interest rates will also reflect changes in the money price of pure consumption goods, as well as changes in the money price of houses. The argument is extended to other consumer durables and, in the limiting case, to monetary balances, and it is concluded that in all but trivial cases the application of the service price approach leads to price movements of little or no meaning.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1475-4991.1979.tb00115.x
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  • 10
    Electronic Resource
    Electronic Resource
    THE WORLDWIDE INCOME DISTRIBUTION: SOME SPECULATIVE CALCULATIONS (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Review of income and wealth 25 (1979), S. 0 
    Details
    ISSN: 1475-4991
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: This paper uses a variety of assumptions to produce calculations of worldwide income distributions from recent international data compilations. The variable quality of the source materials in these compilations along with the arbitrariness in the assumptions required are emphasized. A number of working hypotheses for the worldwide income distribution are offered until data and methods improve. It is suggested the top 1 percent of world population may receive 10–15 percent of world income, the top 10 percent from 45–65 percent, and the bottom 20 percent from 1–4 percent. These figures seem more unequal than those for domestic distributions even for more inegalitarian countries.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1475-4991.1979.tb00099.x
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