Effects of (D-Ala6, Pro9N ethylamide) — LHRH on plasma levels of gonadotropin, 17α,20β-dihydroxy-4-pregnen-3-one and testosterone in male goldeye (hiodon alosoides Rafineque)

Male goldeye were treated with (D-Ala6, Pro9-N ethylamide) — LHRH (LHRH-A) in saline or a silastic pellet (100 µg.kg−1 body weight) and changes in plasma gonadotropin (GtH), 17α,20β-dihydroxy-4-pregnen-3-one (17α,20βP) and testosterone (T) levels were determined by radioimmunoassay. LHRH-A increased plasma GtH levels, with the response to LHRH-A in saline being of much greater magnitude and duration than the response to silastic pellet …