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Maturation of Oreochromis niloticus gonads
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1996)
At hatching when fry were 5 to 6 mm, primordial germ cells (PGCs) were found to concentrate along the dorsomedian region of the peritoneal wall at the root of the developing mesentery and in places far from the appearance ...
LHRHa and pimozide-induced breeding in the catfish, Clarias macrocephalus (Gunther)
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1996)
Clarias macrocephalus is endemic yet dwindling freshwater foodfish in the Philippines. Induced breeding protocol was developed by monitoring the size and maturation of eggs at 0-48 h after a simultaneous injection of ...
Effects of different fat sources on the egg quality of grouper, Epinephelus suillus
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1996)
The effect of different fat sources on the egg quality of grouper, Epinephelus suillus eggs was evaluated. Fish in three tanks, each containing 3 females and 1 male, were fed various types of feeds namely: trash fish ...
Correlations of oocyte diameter with some morphometric characters in the nile tilapia, Oreochromis niloticus L.
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1996)
A study was conducted to determine the correlation of oocyte diameter with some morphometric characters in a Philippine strain of Oreochromis niloticus L. One hundred and thirty-five 7- to 9-month old sexually mature female ...
Nickel-induced pathohistologic alterations in Oreochromis mossambicus
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1996)
A pathohistologic study was conducted to determine the effects of nickel on the testes of maturing Mozambique tilapia, Oreochromis mossambicus. The fish were treated with 0.5 mg/L and 1.0 mg/L sublethal dose of nickel ...
A review of SEAFDEC/AQD finfish breeding research
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1996)
Recent progress undertaken by SEAFDEC/AQD in the development of broodstock of a variety of cultured fish in the Philippines is reviewed. Spontaneous maturation and spawning has been achieved among captive breeders of ...
Effects of single injection of carp pituitary extract and human chorionic gonadotropin on germinal vesicle migration and ovulation in lampan sungai, Puntius schwanenfeldii (Bleeker): A preliminary study
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1996)
The effects of crude pituitary extract (CPE) and human chorionic gonadotropin (hCG) on germinal vesicle migration and ovulation in lampan sungai Puntius schwanenfeldii (Bleeker) were investigated. Sexually mature female ...
Induced spawning of the mangrove red snapper, Lutjanus argentimaculatus
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1996)
Wild-caught mangrove red snapper, Lutjanus argentimaculatus, reared for a year in 4.0 m diameter by 1.5 m deep circular concrete tank spontaneously matured and were used for induced spawning trials. On 19 August 1992, a ...
Control of gonad growth, maturation and spawning in teleost fish: A review
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1996)
Despite their great variety of reproductive strategies, a general characteristic of most teleosts is that (where known) natural reproduction shows a long-term periodicity, even in tropical habitats (e.g. see contributions ...
The role of cyclic amp in oocyte maturation of goldfish, Carassius auratus
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1996)
The role of cyclic AMP in oocyte maturation was investigated using denuded goldfish oocytes cultured in vitro. The oocytes were stimulated with a maturation-inducing steroid (MIS), 17α, 20ß dihydroxy-4-pregnen-3-one (17, ...