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¹ Agriculture Faculty, Yüzüncü Yıl University, Van, Turkey
² Aquaculture Faculty, Ege University, İzmir, Turkey Viewed : 4632 - Downloaded : 5372 A single injection of 20μg/kg LHRHa ([D-Ser (tBu)⁶, Pro⁹-NEt]-LHRH) combined with 0.5 mg/kg of the dopamine receptor antagonist, Haloperidol (LHRHa+HAL) was used for induction of spawning in the common carp under routine hatchery conditions. This treatment caused successful ovulation. Latency in common carp injected with LHRHa+HAL was dependent on water temperature, and minimal latency was 14 h. When LHRHa+HAL was given at various hours of the day it resulted in identical spawning with the same latency. These results show that the predicting latency at a given temperature may provide successful hatchery management for fish farmers. Keywords : induction spawning, LHRHa, haloperidol, common carp