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Helgoländer Meeresuntersuchungen

, Volume 39, Issue 4, pp 441–447 | Cite as

On the sexual reproduction ofDictyosiphon foeniculaceus (Phaeophyceae, Dictyosiphonales)

  • Akira F. Peters
  • Dieter G. Müller
Article
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Abstract

Dictyosiphon foeniculaceus from Sweden and Newfoundland was studied in laboratory culture. Zoids from unilocular sporangia developed into dioecious microscopic filamentous gametophytes which produced uniseriate plurilocular gametangia in low temperatures (0 to 8 °C). Zygotes and unfused isogametes gave rise to filamentous protonemata on which parenchymatous macroscopic sporophytes were formed. Isolates from Sweden and Newfoundland were interfertile. Although formed in culture, genetically unisexual sporophytes were not detected in nature. Female gametes ofD. foeniculaceus produced a sexual pheromone. It was identified as finavarrene, which is also known as the sperm attractant inAscophyllum nodosum.

Keywords

Waste Water Water Management Water Pollution Sexual Reproduction Sexual Pheromone 
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Copyright information

© Biologische Anstalt Helgoland 1985

Authors and Affiliations

  • Akira F. Peters
    • 1
  • Dieter G. Müller
    • 1
  1. 1.Fakultät für Biologie, Universität KonstanzKonstanzFederal Republic of Germany

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