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Endocrine changes associated with overripening of ovulated eggs in goldfish, Carassius auratus L.
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1996)
Changes in steroid hormone levels in the serum and ovarian fluid were studied during overripening in goldfish. Ovulated eggs retained in the ovarian cavity become overripe at around 12 h after ovulation and completely ...
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 ...
Natural spawning of four Epinephelus species in the laboratory
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1996)
Natural spawnings of four Epinephelus species reared in the laboratory were observed from 1987 to 1992. These species are: E. summana, E. caeruleopunctatus, E. macrospilus and E. fuscoguttatus. Spawning was serial, usually ...
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 ...
Mass larval rearing technology of marine finfish in Japan
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1996)
With economic development and increased demand for high price fish, industrial scale marine finfish culture in Japan was started in 1960-1965 for yellowtail Seriola quinqueradiata. Sustainable supply of wild juvenile and ...
Role of growth hormone in the adaptation to sea water of juveline brown trout, (Salmo trutta)
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1996)
The first part of the study investigates the ability of ovine growth hormone (oGH) to enhance the hypo-osmoregulatory and growth performance of juvenile brown trout after exposure to sea water (SW). Three groups of fish ...
A review of grouper (Epinephelus suillus) fry production research in Malaysia
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1996)
Research on grouper (Epinephelus suillus) fry production in captivity has been carried out in Malaysia since 1986 at Tanjung Demong Marine Finfish Production and Research Centre (TDMFPRC) but the breakthrough was only ...
Changes in lipid and fatty acid content during early larval development of milkfish (Chanos chanos): influence of broodstock diet
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1996)
The influence of amount and type of lipid given to milkfish broodstock by developing larvae was investigated by feeding broodstock commercial diets that differed in lipid content and composition. The two commercial feeds ...
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 ...
Impact of nickel poisoning on the histology of the ovaries of Oreochromis mossambicus
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1996)
Ovaries of Oreochromis mossambicus exposed to sublethal concentrations of nickel sulphate (0.5 mg/1 and 1.0 mg/1) were histologically analyzed. Changes following exposure to 0.5 mg/1 nickel sulphate include irregularities ...