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  1. The phaeophyceanF. serratus and the rhodophyceanD. sanguinea came from the North Sea (30‰ S) and the Baltic Sea (15‰ S). The activity of photosynthesis was taken as a criterion of algae vitality. Experiments were...

    Authors: Uta R. Nellen

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1966 13:BF01611429

    Content type: OriginalPaper

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  2. In spring 1965 eggs of the soleSolea solea L. were hatched in the Marine Station of the Biologische Anstalt Helgoland (island Helgoland, North Sea). The newly hatched larvae were raised under laboratory condition...

    Authors: Harald Rosenthal

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1966 13:BF01611424

    Content type: OriginalPaper

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  3. Das antibakterielle Spektrum von sechzig Antibiotika produzierenden Mikroorganismen mariner Herkunft wurde bestimmt. Zwanzig verschiedene Bakterienarten dienten als Testorganismen; von ihnen waren fünfzehn gra...

    Authors: Roshan B. Baam, Naren M. Gandhi and Yvonne M. Freitas

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1966 13:BF01612664

    Content type: OriginalPaper

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  4. Aus 41 Seewasserproben verschiedener Herkunft wurden 60 Stämme mariner Bakterien mit antagonistischen Eigenschaften gegenüberStaphylococcus aureus undSalmonella typhosa isoliert. Die Wirkung verschiedener Nährsto...

    Authors: Roshan B. Baam, Naren M. Gandhi and Yvonne M. Freitas

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1966 13:BF01612663

    Content type: OriginalPaper

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  5. Die Wirkung verschieden behandelter zellfreier Filtrate einer Variante des marinen BakteriumsPseudomonas piscicida, die antibiotische Wirksamkeit gegen die im marinen Milieu vorkommende HefeRhodotorula minuta bes...

    Authors: John D. Buck and Samuel P. Meyers

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1966 13:BF01612662

    Content type: OriginalPaper

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  6. The fine structure of various stages of development of oocytes of several marine teleosts was studied by electron microscope. The primary membrane of the oocyte represents a typical cell membrane. The contact ...

    Authors: Klaus-Jürgen Götting

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1966 13:BF01612661

    Content type: OriginalPaper

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  7. Es wird der Nachweis geführt, daß die Glykogenextraktion aus den Geweben einiger mariner Invertebraten(Balanus balanoides, Nephtys hombergi, Carcinus maenas, Mytilus edulis) durch 5% Trichloressigsäure von dem Ho...

    Authors: Harold Barnes and John R. Heath

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1966 13:BF01612660

    Content type: OriginalPaper

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  8. Cultures ofUrospora wormskioldii were used for studying growth and details of cell-division in this alga. In general, all cells of a filament are able to divide in a four-day-rhythm. During this period, the lengt...

    Authors: Peter Kornmann

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1966 13:BF01612657

    Content type: OriginalPaper

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  9. Einzelpolypen eines Klons vonC. multicornis Forskål wurden schrittweise in 12 verschiedene Temperatur-Salzgehalts-Kombinationen überführt und — während sie zu neuen Kolonien heranwuchsen — das Längenwachstum ihre...

    Authors: Otto Kinne and Gustav-Adolf Paffenhöfer

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1966 13:BF01612656

    Content type: OriginalPaper

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  10. Der brack-wasserlebende PolychaetMarphysa gravelyi vermag alle getesteten Ionen seines Innenmediums — Chloride, Natrium, Kalium — gegenüber den im Außenmedium vorhandenen Konzentrationen dieser Ionen zu reguliere...

    Authors: Bhupalam Krishnamoorthi and S. Krishnaswamy

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01880937

    Content type: OriginalPaper

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  11. Der Einfluß verschiedener Temperatur-Salzgehaltskombinationen (25°, 30° und 35° C; Süßwasser, 9,7‰, 19,4‰ und 32,4‰ S) auf die Quantität des verbrauchten Sauerstoffs wurde für verschieden große Fische ermittel...

    Authors: Vipparti Parvatheswararao

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01880936

    Content type: OriginalPaper

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  12. The dynamics of the early development of the chaetognathSagitta setosa Joh. Müll. has been studied up to the completed gastrulation, the leaving of the primordial germ cells and the closure of the prostoma. Compa...

    Authors: Willi Kuhl and Gertrud Kuhl

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01880935

    Content type: OriginalPaper

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  13. The carbohydrates dissolved in sea water have been mostly determined in terms of total concentration. Only in a few cases have they been identified and single components measured quantitatively. In the present...

    Authors: Heinz Schaefer

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01880934

    Content type: OriginalPaper

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  14. Several methods have been used hitherto to isolate amino acids from sea water. These methods are discussed in the first part of this paper, which is primarily concerned with the presentation of a new method, t...

    Authors: Heinz Schaefer

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01880933

    Content type: OriginalPaper

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  15. Acrosiphonia cultures proved to be very suitable for observations on growth and structure in this alga. Only the apical cells of the branched monosiphonous filamentous alga increase in length, and it is easy to ...

    Authors: Peter Kornmann

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01880932

    Content type: OriginalPaper

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  16. Authors:

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01612566

    Content type: Announcement

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  17. Début juin 1964, plusieurs cadres dotés de lames de nature différente furent immergés dans le port d'Ostende dans le but de détecter des différences éventuelles dans la colonisation des substrats. Deux mois pl...

    Authors: Guido Persoone

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01612565

    Content type: OriginalPaper

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  18. The new species is marine, whereasPorphyridium purpureum (= P. cruentum), first known only from terrestrial habitats, is halophilic and has been found several times in seawater.Porphyridium violaceum differs from...

    Authors: Peter Kornmann

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01612563

    Content type: OriginalPaper

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  19. Upon observing the tidal section of the Elbe River, it was found that the elvers (Anguilla anguilla L.), gathering in shoals immediately below the surface of the water, moved only in the early part of the morning...

    Authors: Friedrich-Wilhelm Tesch

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01612562

    Content type: OriginalPaper

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  20. In order to investigate the activity patterns of the shore crabCarcinus maenas, an apparatus was developed which allows the crab to move freely about in its container. The crab has the possibility to move on or u...

    Authors: Friedrich Krüger

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01612559

    Content type: OriginalPaper

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  21. Erbgleiche Polypen vonClava multicornis Forskål wurden in 12 verschiedenen Temperatur-Salzgehalts-Kombinationen durch asexuelle Vermehrung zu neuen Kolonien herangezogen und an den adulten Hydranthen dieser erbgl...

    Authors: Otto Kinne and Gustav-Adolf Paffenhöfer

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01612558

    Content type: OriginalPaper

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  22. Authors:

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01612100

    Content type: Announcement

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  23. A new polychaete genus,Parapodrilus psammophilus, is described on the basis of individuals caught in the sandy interstitial zone on the island Sylt (North Sea, German Bight). The main features of the new polychae...

    Authors: Wilfried Westheide

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01612099

    Content type: OriginalPaper

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  24. Anatomy and muscle arrangement of the mastax and the labrum ofNeomysis vulgaris are described. For this purpose the mastax as a whole was made transparent and its chitin preparation then covered with minute silve...

    Authors: Klaus Haffer

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01612098

    Content type: OriginalPaper

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  25. In 1964 and 1965 a research vessel using a special “shrimp trawl” with various mesh sizes caught severalM. Poutassou, a fish previously known to occur only in the Atlantic and in the deeper waters of the northern...

    Authors: Jürgen Flüchter and Harald Rosenthal

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01612097

    Content type: OriginalPaper

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  26. L'organogénèse du bourgeonnement médusaire polypodial est étudié chezRathkea octopunctata et comparé avec celui du bourgeonnement médusaire manubrial de la même espèce. A l'encontre de ce dernier exclusivement ec...

    Authors: Jean Bouillon and Bernhard Werner

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01612096

    Content type: OriginalPaper

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  27. Graphical analysis of growth data obtained on the fishRoccus americanus byMansueti (1961a) has led to the development of a new growth formula, which seems to be more appropriate for expressing quantitative aspect...

    Authors: Friedrich Krüger

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01612095

    Content type: OriginalPaper

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  28. With progressing age, the food vacuoles ofMetafolliculina adrewsi develop a border of folds, which attains its most pronounced differentiation at a stage where maximum resorption of nutrient substances presumably...

    Authors: Gotram Uhlig, Hans Komnick and Karl-Ernst Wohlfarth-Bottermann

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01612094

    Content type: OriginalPaper

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  29. Earlier experiments on folliculinids have been conducted primarily by employing the glass-plate method. The cultivation of sessile, loricated folliculinids under non-sterlile conditions is rather difficult bec...

    Authors: Gotram Uhlig

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01612093

    Content type: OriginalPaper

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  30. No answer to this question is presented in this article. Two species, morphologically alike, differ in their life-cycles. One of these species has hitherto been found only once in a culture ofSpongomorpha aerugin...

    Authors: Peter Kornmann

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1965 12:BF01612092

    Content type: OriginalPaper

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  31. Authors:

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1964 11:BF01612381

    Content type: Announcement

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  32. A new simple glass-made apparatus for very exact volume determinations of biological material is described. The accuracy and reproducibility of the measurements are demonstrated.

    Authors: Hanswerner Kesseler

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1964 11:BF01612379

    Content type: OriginalPaper

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  33. A total of 298 strains belonging to the fluorescent group of the genusPseudomonas were isolated from samples taken from the Überlinger See (Bodensee). 174 of these strains cause gelatin to liquidize. The ability ...

    Authors: Rainer Ruschke

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1964 11:BF01612377

    Content type: OriginalPaper

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  34. Samples of cell sap in amounts suitable for chemical analysis of mineral compounds were obtained by high speed centrifugation of several frost-killed (-20° C) Helgoland algae under paraffin oil. In order to ca...

    Authors: Hanswerner Kesseler

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1964 11:BF01612374

    Content type: OriginalPaper

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  35. The results of my formerly published investigation on the life-cycle ofSpongomorpha aeruginosa (= Sp. lanosa) are confirmed:Codiolum petrocelidis from Helgoland as type-locality is the sporophytic stage of the ab...

    Authors: Peter Kornamann

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1964 11:BF01612372

    Content type: OriginalPaper

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  36. Displacement preening in larvae ofAeschna cyanea is performed in the course of searching behaviour whenever a prey-dummy is suddenly removed. Experiments with a group of animals of the same age, size and origin w...

    Authors: Manfred Hoppenheit

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1964 11:BF01612369

    Content type: OriginalPaper

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  37. Towing tests performed with a modified Gulf III-sampler (“Hai”) with flowmeters revealed an increase in the amount of water filtered per nautical mile with increasing towing speeds from 2.5 to about 6 knots. A...

    Authors: Gotthilf Hempel

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1964 11:BF01612367

    Content type: OriginalPaper

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  38. A brief description is given of a method permitting the excavation ofArenicola burrows. A special digging box (“Stechkasten”) has been constructed (Abb. 1), allowing a block of the substratum to be cut out and th...

    Authors: Erich Ziegelmeier

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1964 11:BF01612366

    Content type: OriginalPaper

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  39. In spite of their structural diversity, estuarine organisms exhibit close functional similarities, particularly with respect to the compensatory measures employed to counteract the ill effects of their rough o...

    Authors: Otto Kinne

    Citation: Helgoländer wissenschaftliche Meeresuntersuchungen 1964 11:BF01612365

    Content type: OriginalPaper

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