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Effect of varying crude protein levels on spawning frequency and growth of Sarotherodon niloticus breeders
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1981)
Four-month-old S. niloticus breeders were fed with dry pellets containing 20-50% crude protein and the frequency of spawning involving removal of egg from the mouthbrooding females and growth were determined. When the diets ...
Effects of exogenous hormone injections on milt consistency in newly caught, wild milkfish
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1981)
A study was conducted to determine the effects of single injections of human chorionic gonadotropin (HCG) and Durandron Forte 250 on sperm motility, vitality and density and also on the consistency of milt in newly caught, ...
Notes on the induced maturation and spawning in four-month-old Penaeus monodon Fabricius by eyestalk ablation
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
The ablation technique consisted of making an incision across the eyeball to allow free flow of fluids while holding the prawn under water, squeezing the eyeball contents outwards, and pinching hard the eyestalk tissue. ...
Land-based mass production of prawn (Penaeus monodon Fabricius) spawners
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
The first spawnings were obtained 12 days after ablation with 4 spawners yielding 784,000 eggs and a harvest of 250,000 P<sub>10</sub> fry. Survival of females after 1 month was approximately 30%. Mortalities were mostly ...
Experiments on the induced spawning and larval rearing of the milkfish, Chanos chanos (Forsskal) in 1979
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1979)
This paper summarizes the results of the experiments on the induced breeding and larval rearing of milkfish during the 1979 season.
Survival, maturation, fecundity and hatching rates of unablated and ablated Penaeus indicus H.M. Edwards from brackishwater ponds
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1979)
Penaeus indicus harvested after three months of rearing in brackishwater ponds and averaging 6.9 g for females and 5.6 g for males were stocked in two 12 cu m flowthrough ferrocement tanks at 240 females and 200 males per ...
The skull of milkfish, Chanos chanos Forsskal
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1979)
The skull of the milkfish, C. chanos, is described so that it may be used as a tool in identifying the effect of artificial propagation in terms of skeletal malformations.
Notes on the pigmentation pattern in the larval developmental stages of laboratory-reared milkfish
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1978)
Milkfish fry were artificially bred and reared in the laboratory and the pigmentation pattern of the different developmental stages of the larvae are described in detail, with illustrations.
Observations on the artificial fertilization of eggs and larval rearing of the grey mullet, Mugil cephalus L.
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1978)
The results are presented of attempts to artificially fertilize Mugil cephalus eggs in the Philippines. Embryonic development is outlined and rearing of the larvae described. Mass mortality occurred during week 3 of rearing.
Experiments on the induced breeding of milkfish, Chanos chanos (Forsskal) in 1978
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1978)
Results indicated that a female having eggs with an average diameter of < 0.7 mm did not respond well to the hormone injections.