F. Graf von Medem

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The fertilizing substances (Gamons or Fertilizins) ofEsox lucius andThymallus vulgaris are beeing examined. Apart from the well known effects of these two substances of ovum and sperm, the following effects have also been demonstrated: (1) If added to a 50 vol. % diluted sperm-liquor of the pike, the species-specific sperm shows a prolongated duration of(More)
(1) Researches on the occurence of egg- and sperm-substances (gamons) of some breeds ofCoregonus lavaretus L. andSalmo trutta L., interacting in fertilization. The nomenclature proposed byM. Hartmann andR. Kuhn (1939) being taken as a basis. The biological effects of the (up to this day) known gamons were found to be the following: (2) Gynogamon I (GI):(More)
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