Effects of Somatostatin and Urotensin II on Tilapia Pituitary Prolactin Release and Interactions between Somatostatin, Osmotic Pressure Ca++, and Adenosine 3′,5′-Monophosphate in Prolactin Release in Vitro *

Both somatostatin (SRIF) and urotensin II, a dodecapeptide from the teleost caudal neurosecretory system, inhibit PRL release from the organ-cultured rostral...