The morphogenesis of the pituitary gland and the chronological appearance of adenohypophyseal cells were investigated for the first time in the Somalian cave fish Phreatichthys andruzzii by immunocytochemistry. The adult adenohypophysis contained: a rostral pars distalis, with prolactin ( PRL ) cells arranged in follicles and adrenocorticotropic ( ACTH ) cells, a proximal pars distalis with somatotropic ( GH ), β‐thyrotropic (...

Treating elvers of European eel Anguilla anguilla with mature carp ovary for 3–6 months during early growth induced female differentiation in 51·6–66·7% of treated animals compared with c . 5% in controls. The treatment also induced differentiation of ovaries in eels L T and a higher number of Syrski organs with ambisexual characters, and was most effective when administered at an early growth stage. The results could be attri...

The random amplified polymorphic DNA (RAPD) technique was applied to settle a lawsuit involving unauthorized commercialization of a patented strawberry variety of high economical relevance (‘Marmolada’®). Because of economical involvements, the molecular approach was added to the more traditional morphological examination in a double‐blind test. All plants belonging to the patented variety were unambiguously identified (13 pla...