Die Feinstruktur der Kolbenzellen (Schreckstoffzellen) in der Epidermis von Astyanax mexicanus Filippi 1853 (Characinidae,Pisces) und seinen Höhlenderivaten “Anoptichthys”

Fine Structure of the Club Cells (Alarm Substance Cells) in the Epidermis of Astyanax mexicanus Filippi 1853 (Characinidae, Pisces) and its Cave Forms “Anoptichthys” The club cells in the epidermis of Astyanax mexicanus are of the same ultrastructure as those in other Ostariophysan fish. There are also no essential differences to be found between the club cells of epigean Astyanax mexicanus and its cave forms “Anoptichthys”. Our findings correspond to former statements in that the function of the club cells producing and releasing alarm substances has been maintained in the cave forms.