IMPACT OF OOCYTE SIZE ON LHRHA INDUCED OVULATION AN D FERTILIZED EGG QUALITY IN SADDLED BREAM OBLADA MELANURA (LINNAEUS, 1758) (CROSBI ID 193481)
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Podaci o odgovornosti
Antolović, Nenad ; Kožul, Valter ; Glavić, Nikša ; Bolotin, Jakša
engleski
IMPACT OF OOCYTE SIZE ON LHRHA INDUCED OVULATION AN D FERTILIZED EGG QUALITY IN SADDLED BREAM OBLADA MELANURA (LINNAEUS, 1758)
The objective of this study was to evaluate the effects of oocyte size and luteinizing hormone releasing hormone analogue (LHRHa) on ovulatory success in artificial fertilization. Vitellogenic females with maximum oocyte diameters 400-550 μm were repeatedly injected with LHRHa (20 μ g kg-1 per injection). Fish with maximum oocyte diameters <500 μm failed to ovulate. In contrast, all fish with maximum oocyte diameters >500 μm spawned within 48-54 h. These results demonstrate that injected LHRHa is effective for ovulation of saddled bream with maximum oocyte diameters >500μm.
Saddled bream; Oblada melanura; LHRHa; artificial fertilization
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Biologija