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  • Springer  (461,753)
  • PANGAEA
  • 1980-1984  (224,929)
  • 1965-1969  (147,093)
  • 1960-1964  (90,729)
Collection
Years
Year
  • 1
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    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2016-08-18
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 2
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    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2016-08-25
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 3
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    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2015-11-27
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 4
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    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2015-12-14
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 5
    Publication Date: 2018-04-03
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 6
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    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2016-07-28
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 7
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    PANGAEA
    In:  EPIC3Manchester Literay and Philosophical Society, Bremerhaven, PANGAEA, 106, pp. 22-45
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 8
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    PANGAEA
    In:  EPIC3Kwartalnik geologiczny Wydawn, Geologiczne Warszawa, Bremerhaven, PANGAEA, 10(2), pp. 453-461
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 9
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 10
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    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2016-02-20
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 11
    Publication Date: 2015-10-23
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 12
    Publication Date: 2015-10-29
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 13
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    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2015-02-18
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 14
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    PANGAEA
    In:  EPIC3Reports Sonderforschungsbereich 95, Universität Kiel., Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 15
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    PANGAEA
    In:  EPIC3Revue de Paléobiologie 2(2), Bremerhaven, PANGAEA, pp. 163-180
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 16
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    PANGAEA
    In:  EPIC3Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, Bremerhaven, PANGAEA, 134, 64 p.
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 17
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    PANGAEA
    In:  EPIC3In: The nature of bogs and methods of their investigations, The Academy of Sciences of the USSR, All-Union Botanical Society, 291 pp, Nauka, Moscow., Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 18
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    PANGAEA
    In:  EPIC3BERICHTE aus dem INSTITUT FOR MEERESKUNDE an der CHRISTIAN-ALBRECHTS-UNIVERSITAT· KIEL, Bremerhaven, PANGAEA, 110, 157 p.
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 19
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    PANGAEA
    In:  EPIC3Transactions of the Dumfriesshire ..., Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 20
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    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 21
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    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 22
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    PANGAEA
    In:  EPIC3Berichte des Naturwissenschaftlich-medizinischen Vereins in Innsbruck, Bremerhaven, PANGAEA, 71, pp. 19-56
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 23
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 24
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    PANGAEA
    In:  EPIC3Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, Bremerhaven, PANGAEA, 80, 118 p.
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 25
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    PANGAEA
    In:  EPIC3ACTA SOCIETATIS BOTANICORUM POLONTAE Vol. XXXII Nr 1., Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 26
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    PANGAEA
    In:  EPIC3Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Dniversität Kiel. 76, Bremerhaven, PANGAEA, 150 p.
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 27
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    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 28
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    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 29
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    Springer
    In:  EPIC3Naturwissenschaften, Springer, 71(12), pp. 599-608, ISSN: 0028-1042
    Publication Date: 2014-06-04
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , notRev
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  • 30
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    PANGAEA
    In:  EPIC3manuscript for teaching students., Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 31
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    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2014-08-06
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 32
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    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2018-08-10
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 33
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    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2015-10-31
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 34
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    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2015-11-13
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 35
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    PANGAEA
    In:  EPIC3Woods Hole, PANGAEA
    Publication Date: 2015-10-23
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 36
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    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2016-06-13
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 37
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    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2016-06-23
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 38
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    PANGAEA
    In:  EPIC3Flora:, Bremerhaven, PANGAEA, 158, pp. 480-519
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 39
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    PANGAEA
    In:  EPIC3Transactions (Trudy) of the P.P. Shirshov Institute of Oceanology USSR Acad. Sci., 1961. Vol. 50, p., Bremerhaven, PANGAEA, pp. 170-183
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 40
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    PANGAEA
    In:  EPIC3"Meteor" Forschungs-Ergebnisse, C, Bremerhaven, PANGAEA, 35, pp. 23-59
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 41
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    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2015-05-07
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 42
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    PANGAEA
    In:  EPIC3Deutsches Hydrographisches Institut, Hamburg, Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 43
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    PANGAEA
    In:  EPIC3Deutsches Hydrographisches Institut, Hamburg, Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 44
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    PANGAEA
    In:  EPIC3Rapports et Procès-Verbaux des Réunions, Bremerhaven, PANGAEA, 157, 274 p.
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 45
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    PANGAEA
    In:  EPIC3Deutsches Hydrographisches Institut, Hamburg, Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 46
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    PANGAEA
    In:  EPIC3Deutsches Hydrographisches Institut, Hamburg, Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 47
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    PANGAEA
    In:  EPIC3Offa, Berichte und Mitteilungen zur Urgeschichte, Frühgeschichte und Mittelalterarchäologie, Bremerhaven, PANGAEA, 38, pp. 365-376
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 48
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    PANGAEA
    In:  EPIC3Deutsches Hydrographisches Institut, Hamburg, Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 49
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    PANGAEA
    In:  EPIC3Deutsches Hydrographisches Institut, Hamburg, Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 50
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    PANGAEA
    In:  EPIC3Deutsches Hydrographisches Institut, Hamburg, Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 51
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    PANGAEA
    In:  EPIC3Deutsches Hydrographisches Institut, Hamburg, Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 52
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    PANGAEA
    In:  EPIC3Deutsches Hydrographisches Institut, Hamburg, Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 53
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    PANGAEA
    In:  EPIC3Deutsches Hydrographisches Institut, Hamburg, Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 54
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    PANGAEA
    In:  EPIC3Fachbereiche Geowissenschaften, University Bremen., Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 55
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    PANGAEA
    In:  EPIC3Ergänzungsheft Reihe A (8°), Nr. 5 zur Deutschen Hydrographischen Zeitschrift, Deutsches Hydrographisches Institut, Hamburg., Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 56
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    PANGAEA
    In:  EPIC3Deutsches Hydrographisches Institut, Hamburg, Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 57
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    PANGAEA
    In:  EPIC3Deutsches Hydrographisches Institut, Hamburg, Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 58
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    PANGAEA
    In:  EPIC3Deutsches Hydrographisches Institut, Hamburg, Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 59
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    PANGAEA
    In:  EPIC3Deutsches Hydrographisches Institut, Hamburg, Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 60
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    PANGAEA
    In:  EPIC3Deutsches Hydrographisches Institut, Hamburg, Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 61
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    PANGAEA
    In:  EPIC3Deutsches Hydrographisches Institut, Hamburg, Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 62
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    PANGAEA
    In:  EPIC3Deutsches Hydrographisches Institut, Hamburg, Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 63
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    PANGAEA
    In:  EPIC3Deutsches Hydrographisches Institut, Hamburg, Bremerhaven, PANGAEA
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 64
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    PANGAEA
    In:  EPIC3Spektrum der Wissenschaft, Bremerhaven, PANGAEA, 2, pp. 10-20
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 65
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    PANGAEA
    In:  EPIC3Abhandlungen des Naturwissenschaftlichen Vereins zu Bremen, Bremerhaven, PANGAEA, 39, pp. 185-261
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 66
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    PANGAEA
    In:  EPIC3Revue de Paléobiologie, Bremerhaven, PANGAEA, 2(2), pp. 221-227
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 67
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    PANGAEA
    In:  EPIC3Australian Meteorological Magazine, Bremerhaven, PANGAEA, 31(3), pp. 179-184
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    In:  EPIC3Antarctic Map Folio Series, American Geographical Society, Bremerhaven, PANGAEA, pp. 9-12
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    In:  EPIC3Kwartalnik geologiczny Wydawn, Geologiczne Warszawa, Bremerhaven, PANGAEA, 10(2), pp. 442-452
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    In:  EPIC3LUNDS UNIVERSITETS ÄRSSKRIFT. N.F. Avd. 2. Bd 59. Nr 7., Bremerhaven, PANGAEA
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    Publication Date: 2019-07-17
    Description: Die erneute moorkundlich-pollenanalytische Bearbeitung Nordfrieslands galten u.a. der Klärung folgender Fragen: 1. Sind die in größerer Entfernung von der Küste gewonnenen Erfahrungen über den Verlauf der Waldgeschichte der Nacheiszeit ohne weiteres auf die marschen zu Übertragen? 2. Welche Einflüsse der Meeresüberflutungen auf die Entwicklung der Moore und ihrer Vegetation lassen sich feststellen ? 3. Wie ist der zeitliche Ablauf der postglazialen Meeresspiegelschwankungen in Nordfriesland, und ist es möglich, Fehldatierungen auszuschließen, welche durch Abtragung, Umlagerung oder Durchmischung der in das Marschprofil eingeschlossenen pollenführenden Moorschichten bedingt sind?
    Repository Name: EPIC Alfred Wegener Institut
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  • 72
    ISSN: 1420-9098
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    Topics: Biology
    Description / Table of Contents: Summary In this work, the author gives a morphological description ofAphomia sociella at different stages of its life cycle, that permits the identification of these moths among the sub-family ofGalleriinæ. The depredatory behaviour of wax-moth caterpillars inside the Bumble-Bees' nest has been studied. The larvae ofAphomia sociella are dangerous for Bumble-Bees' nests, not only because they ruin the combs and feed on wax, but also because they inhibit the growth of the offspring. The wax-moth larvae build up a network of tunnels of sticky secreted threads, under cover of which the voracious larvae seek their food. The female of bumble-bee wax-moth lays her eggs in masses, so the newly hatched caterpillars begin their lives in close contact with one another. The tendency that impels the female to lay in masses instead of singly is the first requirement of gregarious behaviour. This gregarious behaviour in caterpillars lasts until later larval stages.
    Notes: Conclusions et résumé Dans ce travail, nous avons donné une description morphologique d'Aphomia sociella aux différents stades de son cycle biologique, permettant ainsi l'identification de ces Insectes au sein de la sous-famille desGalleriinæ. Nous avons également abordé une étude du comportement d'Aphomia sociella, en particulier le comportement prédateur des chenilles à l'intérieur du nid de Bourdons. Les chenilles d'Aphomia sociella sont dangereuses pour les nids de Bourdons, non seulement par le fait qu'elles détruisent les cellules cireuses et se nourrissent des substances accumulées, mais aussi parce qu'elles inhibent l'évolution des larves de Bourdons en creusant leurs galeries autour du nid, et en tissant une toile qui retient les larves et les nymphes prisonnières. La femelle d'Aphomia sociella dépose ses œufs en amas, de sorte que les jeunes chenilles nouvellement écloses se trouvent très tôt en contact les unes avec les autres. La tendance qui incite la femelle à déposer ses œufs en groupe, et non isolément, constitute, selonO'Byrne (1937), la condition première du comportement grégaire. Après l'éclosion des œufs, la durée du comportement grégaire dépend du degré d'attraction mutuelle manifesté par les chenilles. L'adaptation de la structure du nid au milieu, en particulier au support, et la possibilité de reformer un groupement lorsque les circonstances l'exigent, suggèrent la faculté des larves d'Aphomia sociella à répondre à la réaction déclenchée par la perception des fils soyeux sécrétés par les autres chenilles.
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    Insectes sociaux 14 (1967), S. 157-160 
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    Topics: Biology
    Description / Table of Contents: Summary The intestinal pH ofMicrocerotermes edentatus (Amitermitinæ) is very alkaline (〉9,6) up to the first pouch of the hindgut. It then decreases to become almost neutral in the second pouch and slightly acid in the rectum. Among the lower Termites, on the contrary, it is acid in the anterior and middle regions of the digestive tract. These observations may not only be correlated with differences in diet but also with variations in the functions of the malpighian tubules.
    Notes: Résumé Le pH intestinal deMicrocerotermes edentatus (Amitermitinæ) est très alcalin (〉9,6) jusqu'à la première poche de l'intestin postérieur, puis il décroît; dans la seconde poche, il est voisin de la neutralité et devient légèrement acide dans le rectum. Chez les Termites inférieurs, il est au contraire acide dans les régions antérieures et moyennes du tractus. Ces phénomènes peuvent être mis en relation avec des différences de régime alimentaire, mais aussi avec le fonctionnement variable des tubes de Malpighi.
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  • 74
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    Insectes sociaux 14 (1967), S. 191-191 
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    Insectes sociaux 14 (1967), S. 183-190 
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    Topics: Biology
    Description / Table of Contents: Zusammenfassung Das Studium einesLasius fuliginosus Nestes während drei jahren hat folgendes gezeigt: 1° Das Ausschwärnem fand in Juni-Juli in Acosse statt im Mai in Düren (Deutschland), Gembloux und Winenne. 2° Die Männchen schwärmen nicht, man kann deren noch bis August im Nest auffinden. 3° Die Ameisen nehmen nicht immer genau Denselben Weg. 4° Das Ameisennest in Acosse ist Während siebend Monaten in Aktivität, von April bis Ende Oktober. 5° Die Wege zur den Nahrungsquellen sind von einem Jahr zum anderen dieselben. Sie werden wàhrend den gleichen Zeit abschnitten, April-Mai-Juni zumPrunus genommen, von Mai bis Oktober zumAhorn, von Juni bis August zur Fichte, von August bis Oktober zumVogelkirschbaum. 6° Die Hypothese eines mehrere jahre anhaltendes gedachtnisses der Ameisen wird vorgeschlagen, sowie eine gewisse maschinelle Aktivität der Arbeiterinnen.
    Notes: Résumé L'étude d'un nid deLasius fuliginosus durant trois années consécutives à montré que: 1° L'essaimage a lieu en juin-juillet à Acosse, en mai à Düren (Allemagne), Gembloux et Winenne. 2° Tous les mâles n'essaiment pas: on en trouve encore dans le nid jusqu'en août. 3° Les fourmis ne suivent pas toujours rigoureusement la même piste. 4° La période d'activité des fourmis du nid d'Acosse s'étale d'avril à la fin d'octobre, soit durant sept mois. 5° Les pistes vers le champ tropophorique sont semblables d'une année à l'autre. Elles sont empruntées aux mêmes époques, vers lePrunus en avril-mai-juin, vers l'Erable de mai à octobre, vers l'Epicea de juin à août, et vers leMerisier d'août jusqu'en octobre. 6° L'hypothèse d'une mémoire pérennante des repères chez les fourmis est prise en considération, mais aussi l'existence d'une certaine automation dans l'activité des ouvrières.
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    Insectes sociaux 14 (1967), S. 281-293 
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    Insectes sociaux 14 (1967), S. 259-280 
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    Topics: Biology
    Description / Table of Contents: Summary 1 Biology of the lonely queen. — The experimental study of the evolution of these lonely queen, show that, they cannot lived isolated, and they cannot found colonies, alone. 2 Biology of colonies with queen. — We have experimentaly established that: in presence of a queen, the workers cannot lay eggs; the eggs which are present in this type of colonies,are laying only by the queen. The produce of workers of the colony, come from the egg laying of a wingless fecundate queen. Produce of queens: a very little number ofgynes are produced by the colony. They born by fecundated eggs, layed by a wingless queen. These larvaes must be developped, without queen contacts. It is also necessary that a great number of workers are rearing a little number of larvaes. InDolichoderus quadripunctatus species, queens and workers have the same birth: eggs layed by fecundated queens. So, queens development is not apparented to blastogenic facts, but trophogenic facts. Produce of males: we have never obtained males from queens eggs.
    Notes: Résumé Première Partie:Biologie de la femelle isolée. — L'étude expérimentale du devenir des femelles isolées montre que ces individus sont incapables de vivre isolément. La fondation des colonies par femelle isolée n'a jamais été observée. Elle n'a jamais pu être réalisée expérimentalement. Deuxième Partie:Biologie des colonies avec reine. — Nous avons pu établir que: en présence de la reine, les ouvrières ne pondent jamais; la totalité des pontes que l'on rencontre dans ces colonies provient de la ponte des reines. Production d'ouvrières: la totalité des ouvrières produites par la colonic previent de la ponte d'une reine fécondée. Production de femelles: Dolichoderus quadripunctatus se caractérise par la production d'un très petit nombre de femelles ailées. Ces femelles ailées sont issues d'œufs pondus par la femelle fécondée, mais dont les larves évoluent sans contact direct avec la reine. Pour que le futur couvain royal puisse se développer, il est nécessaire qu'un grand nombre d'ouvrières élèvent un petit nombre de larves. ChezDolichoderus quadripunctatus, les femelles ailées et les ouvrières ont donc une même origine: la ponte d'une reine. Le déterminisme de l'apparition des femelles n'est donc pas d'ordre blastogénique, mais d'ordre trophogénique. Production de mâles: enfin, nous n'avons jamais obtenu de mâles à partir de ponte de femelles.
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    Insectes sociaux 14 (1967), S. 313-322 
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    Topics: Biology
    Description / Table of Contents: Summary The food ofCamponotus acvapimensis is derived from animal predation and gathering of Homopterans and plants. This diversity of origin of nutrition permits it to avoid periods of food scarcity. During the dry season, the vegetation is destroyed by bush fire and the food is primarily based upon predation. In the wet season, many workers of the species search for exsudates of Homopterans. The building behaviour of thisCamponotus only expresses itself in the building of shelters for Homopterans. This species is preyed upon by differents groups such as birds, frogs and lizards. It is parasitized by calcidid Hymenopterans and fungi.
    Notes: Résumé Les sources alimentaires deCamponotus acvapimensis proviennent de la prédation et de la récolte systématique d'exsudats d'Homoptères et de sucs de plantes. Cette diversité d'origine des produits procure à l'espèce une alimentation abondante tout au long de l'année. En saison sèche, pendant la période où la végétation est détruite après le passage des feux de brousse, l'alimentation carnée prédomine. En saison des pluies, où les plantes jeunes abondent et par conséquent les Homoptères, de nombreuses ouvrières partent à la recherche d'exsudats. Le comportement constructeur de ceCamponotus ne se manifeste que dans la construction d'abris pour Homoptères. L'espèce sert elle-même de proie à divers groupes d'animaux (Oiseaux, Batraciens, Reptiles...). Elle est d'autre part victime de divers parasites (Chalcidiens, champignons...).
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    Insectes sociaux 14 (1967), S. 389-413 
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    Insectes sociaux 15 (1968), S. 31-35 
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    Topics: Biology
    Description / Table of Contents: Summary In queenless societies ofEvylæus nigripes, one of the workers assumes the rôle of a lost queen: she remains permanently in the nest, lays most of the eggs but does not collect any pollen. Queenless societies of workers resemble polygynous spring associations of this species: both indicate the existence of a group effect.
    Notes: Résumé Dans les sociétés orphelines d'Evylæus nigripes, l'une des ouvrières joue le rôle de reine: elle ne participe pas à la récolte du pollen, demeurant constamment au nid, et assume la plus grande part de la ponte sociale. On établit un parallèle entre les sociétés orphelines et les fondations polygynes de la même espèce: les unes et les autres semblent révéler l'existence d'un effet de groupe.
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  • 81
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    Insectes sociaux 15 (1968), S. 45-50 
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    Topics: Biology
    Description / Table of Contents: Résumé On a trouvé que chezZootermopsis nevadensis, termite relativement primitif, ce sont les nymphes et les plus vieilles larves qui manifestent le plus un comportement constructeur et exécutent la plupart du terrassement et des mouvements oscillatoires. En évoluant de l'état de jeunes larves à celui de nymphes, les termites ont tendance à passer moins de temps en trophallaxie et plus à d'autres activités. Les nymphes du premier stade et les larves du sixième stade sont les plus actives à tous points de vue. En termes de comportement, les larves du sixième stade sont l'équivalent le plus proche d'une caste d'ouvriers. Les nymphes du premier stade peuvent être, en gros, divisés en ceux qui passent beaucoup de temps en trophallaxie et relativement peu à d'autres activités et réciproquement. Cette polarité n'était pas évidente chez les insectes plus jeunes. Les sexués de remplacement passent la plupart de leur temps en trophallaxie et très peu à d'autres activités. La plus grande part de cette trophallaxie a lieu avec les plus jeunes larves, tandis que chez les autres stades elle a lieu avec les sexués de remplacement. Il est suggéré ici que les différences de comportement observées pourraient être importantes dans la détermination et la régulation des castes.
    Notes: Conclusions It has been found that inZootermopsis nevadensis, a relatively primitive termite, the nymphs and older larvae carry out most nest-building behaviour, digging, and oscillatory movements. As they progress from young larvae to nymphs the termites tend to spend less time in trophallaxis and more time in other activities. The first instar nymphs and the sixth instar larvae are the most active in all respects. In terms of behaviour the sixth instar larvae are the nearest equivalent to a worker caste. Insects of the first nymphal instar can be roughly divided into those that spend much time in trophallaxis and relatively little in other activities andvice versa. This polarity was not evident in the younger insects. The replacement reproductives spend most of their time in trophallaxis and very little in other activities. Most of this trophallaxis is with the younger larvae, while most of the trophallaxis of the other instars is with the replacement reproductives. It is suggested that behavioural differences such as those found here may be important in caste determination and regulation.
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    Insectes sociaux 15 (1968), S. 89-104 
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    Topics: Biology
    Description / Table of Contents: Summary 1. Successful mating of ergatoid as well as winged females ofHarpagoxenus sublævis Nyl. with males of strange colonies was observed. The ergatoid females show a special behaviour apparently for attracting the males (fig. 1, 2). It looks similar to the behaviour of young females of some termite species and was not yet known from ants. 2. Colony foundation ofH. sublævis in the well known manner (Viehmeyer, 1921) could be observed in the laboratory; even aged ergatoid females can kill or drive away the inhabitants of a colony of their host speciesLeptothorax acervorum and appropriate their brood a second time. 3. The behaviour ofH. sublævis in slaveraids on colonies of its host species is very plastic. Two types of slave-raids could be observed: 1° The well known shape of «bellicose raid» (Adlerz, 1895;Viehmeyer, 1921), 2° the transportation of entire colonies of the host species into the nest ofHarpagoxenus without any struggle («Eudulosis» according toKutter, 1957, but without killing the queens of the host species). 4. All larvae and pupae even of species of the subgenusLeptothorax are removed out of an attacked nest, but only colonies of the subgenusMychothorax are attacked, never such of the subgenusLeptothorax. 5. Slave-raids can only be induced in certain times of the annual cycle; this is normally the period from about the beginning of June to mid of August when pupae are present both in the nests ofHarpagoxenus and its host species. 6. On the slave-raids theHarpagoxenus workers seem to orient themselves optically, near the entrance of the attacked nest or of their own nest they seem to use their «topochemical sense» running loops.
    Notes: Zusammenfassung 1. Erfolgreiche Kopula von ergatoiden sowie geflügelten Weibchen vonHarpagoxenus sublævis Nyl. mit Männchen fremder Kolonien wurde beobachtet. Die ergatoiden Weibchen zeigen ein besonderes Verhalten, durch das sie wohl die Männchen anlocken (Abb. 1, 2). Es ähnelt dem Verhalten der jungen Weibchen mancher Termiten und ist von Ameisen bisher nicht bekannt. 2. Die Koloniegründung vonH. sublævis erfolgte im Versuch in der bekannten Weise (Viehmeyer, 1921), auch ältere ergatoide Weibchen können nochmals erfolgreich die Bewohner einer Kolonie der WirtsartLeptothorax acervorum töten oder vertreiben und sich deren Brut aneignen. 3. Das Verhalten vonH. sublævis beim Raubzug auf Nester der Wirtsarten ist sehr plastisch. Zwei Typen von «Raubzügen» wurden beobachtet: 1) Die bekannte Form des «kriegerischen Raubzuges» (Adlerz, 1895;Viehmeyer, 1921), 2) kampfloser Transport ganzer Kolonien der Wirtsarten insHarpagoxenus-Nest (Eudulosis nachKutter, 1957, jedoch ohne Abtöten der Königinnen aus den Wirtsameisenvölkern). 4. Alle Larven und Puppen auch fremderLeptothoraxarten werden aus einem überfallenen Nest geraubt, doch werden nur Nester der UntergattungMychothorax, nicht vom SubgenusLeptothorax überfallen. 5. Raubzüge sind nur zu bestimmten Zeiten im Jahrescyclus auszulösen; normalerweise ist dies der Zeitraum von etwa Anfang Juni bis Mitte August, wenn in den Kolonien vonHarpagoxenus und seinen Wirtsarten Puppen vorhanden sind. 6. DieH.-Arbeiterinnen orientieren sich auf den Raubzügen wahrscheinlich zunächst optisch, am Eingang des überfallenen Wirtsameisennestes beginnen sie Suchschleifen zu laufen und scheinen sich des «topochemischen Sinns» zu bedienen.
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    ISSN: 1420-9098
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    Description / Table of Contents: Summary The mound builderMacrotermes michaelseni forages in Kenya semi-arid pastures. Each colony (4/ha) utilizes 130 to 600 m2 in average per month. The distribution of foraging holes 22 000 to 50 000 per nest) shows an overall spatial activity. The 24h foraging activity is mainly nocturnal and the seasonal variation presents three peaks per year. This activity depends partly on temperature and rainfall but the internal economy (sexual brood production within the colony) plays a decisive role.
    Notes: Resume Macrotermes michaelseni est un constructeur de termitières épigées qui récolte en strate herbacée dans les pâturages semi-arides du Kenya. Chaque colonie (4/ha) exploite en moyenne 130 à 600 m2 par mois. La répartition des orifices de récolte (22 000 à 50 000 par colonie) démontre que l'ensemble du milieu est utilisé. On envisage la variation journalière de l'activité de récolte (essentiellement nocturne) ainsi que sa périodicité saisonnière (3 maximums annuels). Cette activité est partiellement reliée à la température et aux pluies, mais l'économie interne des colonies (production du couvain de sexués) est aussi déterminante.
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    Insectes sociaux 28 (1981), S. 341-342 
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    Description / Table of Contents: Zusammenfassung Die Nestgründung von einer Arbeiterin der japanischen Falten WespePolistes chinensis antennalis wurde im Juni 1979 beobachtet. Diese Arbeiterin ausschlüpft im Juni 1979 aus einem anderen Nest und reparierte ein verlassenes Nest und zog darin einige Larven aus. Diese ist die erste Entdeckung der Nestgrüdung von einer Arbeiterin in der Unterfamilie Polistinae.
    Notes: Summary The nest foundation by a single worker of the Japanese paper waspPolistes chinensis antennalis was observed in July, 1979. This worker had emerged from another nest in June 1979, and repaired an abandoned nest and reared some larvae there. This is the first discovery of nest foundation by a worker in the subfamily Polistinae
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    ISSN: 1420-9098
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    Description / Table of Contents: Summary The present work follows the study ofMacrotermes michaelseni foraging activities (Lepage, 1981) and deals with its food requirements. The yearly food offtake ranges between 800 and 1500 kg/ha. The harvest is 25 to 30% below in lean year (1976). Termites and large mammals offtakes are similar but they take place at different times of the ecosystem cycle: rainy season for mammals and dry season for termites.Macrotermes would prefer grass litter on the ground if available, but can switch to standing crop as the ecosystem becomes more arid. From this work it is possible to understand howMacrotermes could be a pest in these pastures.
    Notes: Resume Cette étude envisage la prise de nourriture du termiteMacrotermes michaelseni en strate herbacée et complète les observations rapportées précédemment sur le cycle de récolte du termite (Lepage, 1981). Le prélèvement varie de 800 à 1500 kg/ha/an et il est de 25 à 30% inférieur lorsque l'année est déficitaire en pluies (1976). Cette récolte est comparée à l'action des grands Mammifères herbivores présents sur le lieu de l'étude: les quantités globales (herbe et litière) sont du même ordre. Mais l'impact sur l'écosystème n'intervient pas au même moment: saison des pluies pour les Mammifères, saison sèche pour les termites.Macrotermes préfère la litière graminéenne au sol mais consomme progressivement l'herbe sur pied à mesure que l'écosystème devient plus aride. Il est possible de comprendre, d'après ces observations, commentMacrotermes peut devenir nuisible pour ces pâturages semi-arides.
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    Insectes sociaux 15 (1968), S. 245-250 
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    Topics: Biology
    Description / Table of Contents: Summary From the foregoing, it is clear that among the Oriental hornet there is absolute inter-dependence between the larvae and the adults, i.e. a symbiosis in whick the function of the adults is to collect food while that of the larvae is to digest it. At the beginning of the season, when the nector which serves as food for the adults is abundant in nature, the inter-dependence is chiefly with respect to protein digestion. With the advent of summer, the is in Israël and countries of a similar climate, a drop in the natural nectar supply, and the interdependence of the workers and larvae becomes obligatory also with respect to carbohydrates.
    Notes: Zusammenfassung Es ist der Beweis erbracht worden, dass die Kolonien vonVespa orientalis L. nicht ohne Larven bestehen können oder genauer gesagt, ohne Speichelabsonderung der Larven. Diese bilden die einzige Quelle von Rohstoffen für den Stickstoffmetabolismus der Arbeiterinnen und für die Königin, da diese selbst über keine Protease verfügen, welche für den Proteinabbau benötigt werden. Von besonderer Wichtigkeit ist dies für die Eiproduktion der Königin. Dieses Ergebnis legt nahe, dass das Gesellschaftsleben der Hornissen wahrscheinlich als eine Symbiose zwischen Erwachsenen und Larven aufzufassen ist.
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    Insectes sociaux 15 (1968), S. 271-288 
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    Topics: Biology
    Description / Table of Contents: Summary Beside a small RNA synthesis in the oocyte nucleus during previtellogenesis the rapid increase of the volume of the egg cell is conditioned by three extraoocytic components: 1. The pinocytotic uptake of heterosynthetic yolk proteins out of the hemolymph. 2. The content of the nurse cells flowing in the egg cell towards the end of oogenesis. 3. The protein synthesis in the oocyte with RNA from the trophocytes. The RNA metabolism of the different cell types in the egg follicle of the queen honey bee is studied by autoradiography. Most of the RNA required for the euplasmic egg growth is coming out of the ca. 48 polyploidic nurse cells. The oocyte nucleus is only supplying small quantities of RNA at the beginning of oogenesis. No RNA delivery occurs from the follicle epithelium. The rate of RNA synthesis in the nuclei of nurse cells in the honey bee is similar to the well known case of Diptera, especially in the house fly. But the RNA transport from the trophocytes into the oocyte in Apis does not reach the velocity found in the dipterian ovary. The main factors responsible for the production of some thousand eggs per day by the queen honey bee are: a) The number (ca. 48) and size of nurse cells. b) The great number of about 360 ovarioles. c) The number of 20–30 egg follicles simultaneously growing in each ovariole.
    Notes: Zusammenfassung In der Oogenese erfolgt das Wachstum der Eizellen nicht allein als von RNS-Syntheseleistungen des Oocytenkerns abhängige euplasmatische Proteinsynthese. Die schnelle Volumenzunahme der Eizellen wird durch drei extraoocytäre Komponenten bedingt: 1. Pinocytäre Aufnahme heterosynthetischer Dotterproteine aus der Haemolymphe. 2. Einfliessen des Nährfachinhaltes in die Oocyte. 3. RNS-Zufuhr aus den Nährzellen in die Oocyte für die dort ablaufende Proteinsynthese. Untersucht wird mit Hilfe autoradiographischer Technik der RNS-Haushalt der Zellelemente der Eifollikel im Bienenovar. Für das Eiwachstum (Euplasma) spielt die RNS-Zufuhr aus dem von 48 polyploiden Nährzellen gebildeten Nährfach die Hauptrolle. Der Oocytenkern synthetisiert nur zu Oogenesebeginn geringe Mengen an RNS. Aus den Follikelzellen erfolgt keine RNS-Abgabe an die Eizelle. Syntheserate und Transportgeschwindigkeit der trophocytären RNS werden im Vergleich zu Literaturangaben über andere Insektenarten diskutiert. Bei der Honigbiene spielt neben der Grösse des Nährfachs vor allem die hohe Zahl von insgesamt rd. 360 Ovariolen und die Menge der in jeder Ovariole gleichzeitig heranwachsenden Follikel (maximal 20–30) eine Rolle als Voraussetzung für die mögliche Produktion von einigen tausend Eiern pro Tag.
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    Insectes sociaux 28 (1981), S. 347-352 
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    Topics: Biology
    Description / Table of Contents: Zusammenfassung Ungefähr 18% der Arbeiterinnen vonLasioglossum zephyrum werden unter natürlichen Freilandbedingungen begattet. In der Gefangenschaft variiert die Bereitschaft der Weibchen zur Begattung mit dem Alter und dem Kastenzustand: 1) Von anderen Weibchen isolierte Weibchen paarten sich zu 69% innerhalb von drei Tagen nach dem Schlüpfen. 2) In Nestgruppen von je sechs Bienen paarten sich alle Königinnen, jedoch nur 7,7 % aller Arbeiterinnen. 3) Nach künstlicher Entfernung der Königin verpaarten sich die Ersatzköniginnen in allen von zehn Fällen. Diese Ersatzköniginnen waren alle vorher in Gegenwart der alten Königin unverpaart. 4) In einer Kolonie von fünf Bienen paarten sich alle drei Ersatzköniginnen nachdem der Reihe nach die jeweilige Königin entfernt worden war. Gleichzeitig wurden keine der jeweiligen Restarbeiterinen begattet. Diese Ergebnisse zeigen an, dass die Königin die Paarungsbeitschaft der Arbeiterinnen auch ausserhalb des Nestes inhibiert. Es erscheint möglich, dass sich Inhibition durch eine Königin nicht nur auf die Grösse der Ovarien von Arbeiterinnen auswirkt.
    Notes: Summary About 18 percent ofLasioglossum zephyrum workers mate in the field. In the laboratory female mating receptivity varied with age and caste: 1) sixty-nine percent of bees less than 3 days old mated when kept isolated from other females, 2) in six-bee colonies all of the queens, but only 7,7 percent of their workers, mated, 3) in queen removal experiments involving 10 colonies, all the replacement queens mated (these same individuals were not receptive to mating as workers), 4) in one colony of 5 bees, consecutive queen removal showed that each of the four bees identified as the queen mated, while none of the remaining workers did so. The results indicate that queen inhibition governs behavior of the workers even outside the nest. The inhibition may involve more than differences in ovarian size.
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    Insectes sociaux 28 (1981), S. 353-370 
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    Topics: Biology
    Description / Table of Contents: Summary Workers ofMyrmica rubra cluster around living queens from their own colony. Workers also cluster around these same queens after they are killed and kept for one or two hours. The suggestion is that the factors causing these aggregations are at least partly chemical, for dead queens are unable to give movement or acoustical signals. Also, the form of the queens'body is unable to induce the clustering response. The chemical signals causing aggregation, emitted by the queen, are not very volatile and/or they are well adsorbed by her cuticle. They oxidise rapidly after 3–4 hours exposure to the air and they continue to denature, losing their ethological activity, for the subsequent 2–3 days. They deteriorate when warmed to a temperature of 50°C for a few minutes. Organic solvents denature them rapidly and may extract them whereas distilled water has no effect upon them. The chemical factors are uniformly distributed over the external surface of the queen's body and it seems that they are not produced by the metapleural glands. The experiments, producing the above results, are detailed and discussed raising questions and hypotheses that we will consider in future work.
    Notes: Resume Les ouvrières deMyrmica rubra s'agrègent autour de reines indigènes vivantes, et de ces mêmes reines mortes depuis 1 ou 2 heures. Les facteurs responsables de ces agrégations sont, au moins partiellement, de nature chimique. Ils ne sont ni gestuels, ni acoustiques, et la forme du corps des reines est incapable, à elle seule, d'agréger les fourmis. Les facteurs chimiques agrégatifs propres aux reines sont peu volatiles et/ou bien adsorbés sur la cuticule des reines. Ils s'oxydent à l'air au bout de 3 ou 4 heures puis se dégradent encore d'une autre manière, progressivement, au cours du temps. Un passage de quelques minutes à une température voisine de 50°C les altère. Les solvants organiques, mais non l'eau distillée, les dénature rapidement et les extraient peut-être. Enfin, ces facteurs chimiques se répartissent uniformément sur toute la surface externe du corps des reines, et ils ne semblent guère provenir des glandes métapleurales. Après avoir détaillé nos travaux, puis discuté des renseignements acquis, nous posons des questions et hypothèses à envisager dans la suite de notre étude.
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    Insectes sociaux 15 (1968), S. 375-387 
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    Topics: Biology
    Description / Table of Contents: Summary In this work we study the biological cycle of the antDolichoderus quadripunctatus, and we have experimentally established the existence of 3 types of calies: -The first calie type (or central nest) in which is living the unic fecondated and wingless queen, with an important population of workers. -The second calies type (or first range peripheric nests) constituted only by workers colonies, in constant relations with the central nest, and also with the third type nests. -The third type calies (named also, workers colonies of the outside range peripheric nests), constituted like the IId type calies, by a worker population. These nests may exchanged ant larvae populations, and workers, with the second type nests. These constant population exchanges, explained the biological cycle of the antDolichoderus quadripunctatus. The colony multiplication is obtained by a particular process: there is no gynes flight. The gynes are fertilized inside the central nest, and after, they are adopted by the workers of an another calie (IId or IIId, type). This special reproduction process may be compared to the swarming of bees.
    Notes: Résumé Dans ce travail, nous avons étudié le cycle biologique de la fourmiDolichoderus quadripunctatus. Nous avons établi expérimentalement l'existence de trois types de calies: -la calie I, ou calie centrale, qui héberge la reine fécondée; -les calies II, ou calies d'ouvrières de la couronne interne, entretenant des relations constantes avec la calie I; -les calies III, ou calies d'ouvrières de la couronne externe, entretenant des relations avec les calies II. Les divers échanges de populations, tant larvaires qu'adultes, permettent d'expliquer le cycle complet de cette espèce. La multiplication des colonies se fait sans envol de sexués femelles, par la capture d'une femelle déjà fécondée dans le nid mère. Ce mode de reproduction très particulier paraît propre à cette espèce. Enfin, nous avons essayé de dégager les conclusions générales de toute cette série de travaux (voirTorossian, 1967a, b, c, d, e, f, 1968), c'est-à-dire de situer le «niveau social» des sociétés deDolichoderus quadripunctatus. Il apparaît que par de multiples caractères (monogynie, habitat arboricole, perte de la phase solitaire, régulation sociale très diversifiée),Dolichoderus quadripunctatus se situe à un niveau très élevé dans l'échelle sociale des Insectes sociaux.
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    Insectes sociaux 15 (1968), S. 423-434 
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    Insectes sociaux 15 (1968), S. 419-422 
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    Description / Table of Contents: Résumé Les femelles deX. fenestrata possèdent trois moyens de protection de leur progéniture: 1 Régulation de la taille du nid, qui permet d'avoir toujours plus que la moitié de la longueur d'un espace entre nœuds de la tige de bambou, vide entre l'entrée et la dernière cloison. 2 Application d'un répulsif à l'entrée du nid. 3 Attaque de l'intrus en le mordant avec les fortes mandibules ou en le piquant, ou encore en éjectant un liquide répugnant. Ce dernier mode d'attaque n'apparaît que si l'intrus persiste longtemps dans ses tentatives.
    Notes: Summary The female ofXylocopa fenestrata provides protection for her younglings by three ways: (i) regulation of nest size and leaving more than half the length of an internode of a bamboo vacant between the entrance and the last partition, (ii) by applying a repellent at the entrance of her nest, and (iii) by attacking the intruder with her strong mandibles, stinging it and ultimately ejecting a watery repugnant fluid. She resorts to the last method of attack only if annoyance continues for a longtime. The authors are thankful to Dr.A. S. Atwal, Professor of Zoology-Entomology (now, Dean, College of Agriculture) for facilities and criticism of the results and to Dr.G. E. Bohart, United States Department of Agriculture, Utah State University, Logan, for carefully going through the manuscript and making valuable suggestions. They are also thankful to Mr.Surendra Kumar for varied assistance.
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  • 93
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    Description / Table of Contents: Resume La «fourmi de feu»,Solenopsis invicta Buren, a trois principaux groupes fonctionnels d'ouvrières: les fourrageuses, les «stockeuses de réserves» et les nourrices. En utilisant un nid spécialement construit, nous avons pu séparer ces groupes fonctionnels. Nous avons donné aux fourmis de l'iode radio-actif (1251) mélangé à de la poudre de jaune d'œuf, de l'huile de soja ou une solution de miel à 50 % pendant 10 minutes. Le nombre de fourmis par nid et la quantité de nourriture marquée, consommée par fourmi, ont ensuite été mesurés. Lorsqu'elles ont reçu du miel ou de l'huile de soja, les colonies répondent en augmentant le nombre de fourrageuses et de «stockeuses de réserves» actives. Avec les deux sortes de nourriture, les fourrageuses consomment de grandes quantités de liquide; elles en transmettent des quantités plus petites aux «stockeuses de réserves» et aux nourrices. Lorsqu'on donne du miel «à 50 %» aux fourmis, moins de 0,2 % du miel recueilli par les fourrageuses parvient à la colonie; seulement 5 % des larves sont nourries après 10 minutes. Lorsqu'on donne de l'huile de soja, 2 % de l'huile recueillie parvient aux larves: à peu près 35 % des larves sont nourries après 10 minutes. Lorsqu'on donne de la poudre de jaune d'œuf, le nombre de fourrageuses est bas, mais celles-ci viennent plusieurs fois; elles laissent la nourriture à la périphérie du nid ou la transmettent aux «stockeuses de réserves». Les «stockeuses de réserves» transmettent rapidement la nourriture aux nourrices de sorte que, par rapport à l'huile et au miel, la quantité de nourriture consommëe par fourmi est la plus élevée parmi les nourrices. A peu près 80 % du couvain est nourri avec de la poudre de jaune d'œuf durant la période de 10 minutes, ce qui représente 6 % du jaune d'œuf recueilli par les fourrageuses. De cette étude, il apparaît que les ouvrières peuvent distinguer différents types de nutriments et, en conséquence, adapter leur comportement.
    Notes: Summary The imported fire ant,Solenopsis invicta Buren has three main functional worker groups: foragers, reserves, and nurses. By using a specially designed nest we were able to separate these functional groups by location. The ants were presented with 125 Iodine mixed with egg yolk powder, soybean oil, or 50 % honey solution for 10 minutes. The number of ants per nest location and the quantity of radiolabelled food consumed per ant were then measured. When presented with honey or soybean oil, colonies responded by increasing the number of foragers and active reserves. With both foods the foragers took in large quantities of liquid, passing on smaller amounts to the reserves and the nurses. When ants were presented with 50 % honey, less than 0.2 % of the honey collected by the foragers reached the brood. Only 5 % of the larvæ were fed after 10 minutes. When soybean oil was presented, 2 % of the oil collected reached the larvæ and approximately 35 % of the larvæ had been fed after 10 minutes. When the ants were presented with egg yolk powder, the number of foragers was low but they made repeated trips, leaving food on the nest periphery or passing it on to the reserves. Reserves relayed food rapidly to the nurses so that, in contrast to oil and honey, the quantity of food consumed per ant was greatest among the nurses and lower among the reserves and the foragers. Approximately 80 % of the brood were fed egg yolk powder within the 10 minutes period receiving 6 % of the egg yolk collected by the foragers. From this study it appears that workers can discriminate between nutrient types and adjust their behaviour accordingly.
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    Notes: Conclusion. Summary Morphological and statistical researches on the sensory equipment of the Ant's antennæ in chapter I of this work have enabled us to interpret some biological phenomena to be enlarged upon in the next chapters. The part played by the champagne cork shaped organs in the trophallaxic behaviour has been shown by ablations ofMyrmica lævinodis Nyl. antennæ.Aphænogaster gibbosa Latr., a species which does not practise the stomodeal exchanges, possesses twice less numerous champagne cork shaped organs on its antennæ. Besides, in those mixed colonies where the two species are bred together,Aphænogaster sometimes receives food fromMyrmica. However the importance of those needful organs should hot be overvalued becauseMyrmica is partly able to practise the trophallaxic behaviour whithout its feelers. Moreover, ifAphænogaster does not exchange food in its nests, this is certainly not due to a defect of its sensory equipment but very likely to the disappearance of the innate behaviour of «agiver», an inductor of the one of a «receiver». ThusAphænogaster's sensory equipment does need to become as evolued as the one ofMyrmica. The importance (very likely of an olfactory nature) of those organs in other behaviours may have caused its persistence onAphænogaster's antennæ. The crop of that ant has grown much less extensible than the one ofMyrmica. It is further to be noticed that the behaviour ofMyrmica as agiver when its feelers have been cut-off proves easier to carry out but more difficult to acquire or to preserve on the evolutive plane, and thus seems to be more basic as regards trophallaxy. Finaly, beyard the knowledge of the sensory qualities, the interest of the myrmecological material lies in that it affords a new method of approach for the study of the determinism of the behaviour.
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    Insectes sociaux 10 (1963), S. 129-142 
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    Topics: Biology
    Description / Table of Contents: Summary This constitutes an up-to-date review of our knowledge concerning the biological properties of the various lipid fractions isolated from queen and worker honeybees. Particular attention is given to pherormone I, which inhibits queen rearing, and to the mixture pherormone I + pherormone II, which is an attractant for young worker bees, and inhibits ovogenesis.
    Abstract: Zusammenfassung Diese Arbeit bildet eine Zusammenfassung unserer heutigen Kenntnisse über die verschiedenen Lipid Fraktionnen welche aus Bienenköniginnen und Arbeiterinnen isoliert wurden. Besondere Aufmerksamkeit wird dem Pherormon I zugewendet, das den Aufbau der Weiselzellen hemmt, sowie dem Pherormon I + Pherormon II Komplexe, das als Lockstoffe auf die Arbeiterinnen wirkt, und die Eierbildung bei denselben unterbildet.
    Notes: Résumé Cette revue fait le point de connaissances concernant les propriétés biologiques des différentes substances lipidiques isolées des ouvrières et des reines d'abeilles. On insiste plus particulièrement sur la phérormone I inhibitrice de la construction des cellules royales, et sur le complexe phérormone I + phérormone II, attractif pour les jeunes abeilles ouvrières, et inhibiteur de leur oveogénèse.
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    Insectes sociaux 10 (1963), S. 143-152 
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    Topics: Biology
    Description / Table of Contents: Summary It has been studied the male genital apparate of some casts and stages ofReticulitermes lucifugus and of winged reproductives ofPsammotermes assuanensis, Coptotermes sjöstedti, Schedorhinotermes javanicus, with particular attention to the form of the seminal vescicles, to their contenute, and to the testicle's activity.
    Abstract: Résumé Nous avons étudié la conformation des organes mâles de quelques castes et stades deReticulitermes lucifugus et des ailes dePsammotermes assuanensis, Coptotermes sjöstedti, Schedorhinotermes javanicus, en donnant une particulière attention à la forme des vésicules séminales, à leur contenu et à l'activité du testicule.
    Notes: Riassunto Si è studiato l'apparato genitale maschile di alcune caste e stadi diReticulitermes lucifugus e degli alati diPsammotermes assuanensis, Coptotermes sjöstedti, Schedorhinotermes javanicus, prestando particolare attenzione alla forma delle vescicole seminali, al loro contenuto, e all'attività del testicolo.
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    Insectes sociaux 10 (1963), S. 185-186 
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    Insectes sociaux 10 (1963), S. 167-183 
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    Notes: Conclusion De ces considérations générales sur les odeurs, il faut surtout relenir: - D'une part, quel'odeur résulte de l'excitation d'un organe récepteur spécifique. Sa mise en évidence est donc liéa à l'état réactionnel de l'appareil sensoriel — ou mieux de l'organisme — soumis à une stimulation. Elle dépend alors de l'intensité du stimulus et de l'intégraté des structures organiques. - D'autre part, quela sensibilité olfactive est en relation avec l'état physiologique de l'individu. Son étude devra donc tenir compte de la situation de carence ou de réplétion du suject, de son cycle biologique, de son état de maturation et de son sexe. Il est donc indispensable de bien connaitre le matériel qui doit servir à une expérimentation portant sur la perception olfactive.
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    Insectes sociaux 11 (1964), S. 223-238 
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    Topics: Biology
    Description / Table of Contents: Résumé 1 A 20° C après l'hibernation la séquence des œufs d'une reineMyrmica rubra L. montre les particularités suivantes: a) le taux de production s'élève pendant les trois premières semaines jusqu'à un maximum. Ceci se maintient pour 3–4 semaines, puis décline peu à peu jusqu'à zéro après 16 semaines; b) la dimension des œufs décline pendant la période quand le taux s'augmente, puis reste à une minimum valeur constante; c) les œufs prédisposés à devenir ouvrières sont parmi ceux pondus quand le taux s'approche du maximum et la dimension s'approche du minimum. D'autres œufs, les plus gros pondus en premier et les normaux qui viennent plus tard, entrent en diapause dans les mêmes conditions de culture. 2 Les reines peuvent donner ou beaucoup ou très peu d'œufs prédisposés à devenir ouvrières. Les deux types de reine peuvent se trouver dans la même colonie, ou les colonies peuvent en avoir seulement un type, et les intermédiaires peuvent être peu nombreux. La différence paraît être dû à l'âge, car les jeunes reines pondent une très grande proportion d'œufs prédisposés à devenir ouvrières. De plus, ces jeunes reines ont socialement une influence négligeable sur l'élevage du couvain en comparaison des vieilles.
    Abstract: Sommario 1 Il seguito delle uova a 20° C dopo l'ibernazione di una reginaMyrmica rubra L. mostra le particolarità seguenti: a) l'andamento di produzione s'aumenta durante le tre prime settimane fino ad un massimo. Questo si tiene per 3–4 settimane, poi declina poco a poco fino a zero dopo 16 settimane; b) la grandezza delle uova declina durante il periodo quando l'andamento s'aumenta, poi rimane ad un valore costante minimo; c) le uova inclinate a divenire operaie sono fra loro fatte quando l'andamento s'avvicina al massimo e la grandezza s'avvicina al massimo e la grandezza s'avvicina al minimo. Altre uova, le prime grandi e le normali di puì tardi, entrano nella diapausa sotto le stesse condizioni di coltura. 2 Le regine possono dare o molte o poche uova inclinate a divenire operaie. I due tipi di regina possono trovarsi nella stessa colonia, o le colonie possono contenere soltanto uno tipo; le intermedie possono essere scarse. La differenza sembra doversi all' età, piochè le regine giovani fanno una grande proporzione di uova inclinate a divenire operaie. Di puì, queste regine hanno uno influenza sociale negligibile sull' allevamento della covata a petto delle regine vecchie.
    Notes: Summary 1 The egg sequence at 20° C after hibernation of a queenMyrmica rubra L. has the following peculiarities: a) rate of production rises during the first 3 weeks to a maximum that is held for 3–4 weeks and then declines gradually to zero after 16 weeks; b) egg size declines during the period of increasing rate but then stays at a steady minimum value; c) worker-biased eggs are amongst those laid when rate is approaching its maximum and size its minimum. Other eggs, both the large first ones and the normal later ones enter diapause under the same culture conditions. 2 Queens may either yield a lot of worker-biased eggs or very few. Both types of queen may occur in the same colony or colonies may have a single type, and intermediates may be rare. The difference appears to be due to age for young queens lay a very high proportion of worker-biased eggs. Moreover such queens have a negligible social influence on brood-rearing compared with old queens.
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    Insectes sociaux 11 (1964), S. 283-291 
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    Notes: Summary At first, the nests, belonging to differentBellicositermes, show a quite total identity. The large morphological likeness of the dwelling places limited by an idiotheca and surrounded by a «paraecie» is particularly significant. This likeness vanishes as the nests are growing bigger and bigger. To the development of the top height ofBellicositermes natalensis nests, is opposed the lateral developpement of theBellicositermes bellicosus nests. This lateral development is marked by the progressive desappearance of the «paraecie» as well as the idiotheca and the basement chamber. The dwelling place loses its individuality and divides into units more or less distinguisable.
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