NDLI: Gonad development and hormonal induction in artificial propagation of grey mullet, Mugil cephalus L.

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Gonad development and hormonal induction in artificial propagation of grey mullet, Mugil cephalus L.

Content Provider	Semantic Scholar
Author	Yousefian, Mahdi Ghanei, Maryam Pourgolam, R. Rostami, Hosein
Copyright Year	2009
Abstract	Grey m ullet, Mugil cephalus L. is an marine teleost suitable for culture in brackish water. To date, very few r eport on artificial propagation of grey mullet has ever been recorded and still seed stocking relies on wild r ecruitment. This paper describe the technique of controlled ovarian maturation and artificial spawning in t his fish sp ecies. The brood stocks we re o btained from cultured matured fish in Gomishan fish farm, Iran. The progressive of gonad development induced by change the season t ime. The significant changes occur within autumn. Oocyte vitelogenesis and ov ulation were induced by hormonal intervention. The use of mammalian gonadotrophins and synthetic analog of luteinizing hormone 2 releasing hormone (LRH-A ) for initiation and a dvancement and ov arian development is discussed. For successful spawning, a priming injection for females should be when an average egg diameters is 600 im or m ore. A riped ova have a thin layer c ytoplasm covering the yolk a nd have a single oil droplet. In this case, the egg diameter was 960 µm and oi l globule 360 µ m. Hydration was observed about 10 hrs after the i njection of effective d ose and spawning within 4- 6 hrs after beginni ng of hydration at 24 ± 1 °C and water salinity 33-35 ppt . During this time G SI increased from 17 to 28 %. The percent of fertilization was up t o 80. The 3 rd d ay larvae were fed on a mixture o f Chlorella species and Brachionus species and then, newly hatched artemia were added to tanks at the ei ght day after hat ching.
Starting Page	35
Ending Page	40
Page Count	6
File Format	PDF HTM / HTML
Volume Number	4
Alternate Webpage(s)	http://www.aensiweb.com/old/jasa/rjfh/2009/35-40.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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