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Helgoland Marine Research

Open Access

Secretions and structures of the head ofSagitta setosa (Chaetognatha)

  • Helga Kapp1 and
  • Juliane Mathey2
Helgoländer Meeresuntersuchungen43:BF02365546


The different secretions of the mouth, the vestibular organs, and the vestibular pits of chaetognaths are shown on scanning electron micrographs of the head ofSagitta setosa. The secreting organs are described and the functions of the secretions are discussed. In addition, the secretion under the praeputium, a pit between the two rows of anterior teeth, and the surface structure of the teeth are described.


Waste WaterWater ManagementWater PollutionElectron MicrographsSurface Structure