Quarterly Research Reports: Recent submissions
Now showing items 21-40 of 125
-
Growth and survival rates of hatchery-produced and wild milkfish fry grown to fingerling size in earthen nursery ponds
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)Growth and survival rates of hatchery-produced and wild milkfish (Chanos chanos) fry grown to fingerling size were compared. Data show no significant difference between the 2 fry. At a recommended stocking density of 30 ... -
A comparison between the catching efficiency of two milkfish fry collecting gears and their respective modifications
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)An experiment was conducted along the shore of Culasi, Antique in Panay to compare the milkfry (Chanos chanos) catching efficiency of the ordinary fry seine against its innovation and the ordinary sweeper against its 2 ... -
In-vitro effect of fungicides on hyphal growth and sporogenesis of Lagenidium sp. isolated from Penaeus monodon larvae and Scylla serrata eggs
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)The sensitivity of Lagenidium, isolated from Penaeus monodon, Scylla serrata , to 34 antimycotics was determined. Effects on the development of vesicles, zoospores and mycelial growth were evaluated. Although mycoidal ... -
Preliminary studies on the holding of live mussels after harvest
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)Green mussel (Perna viridis) were harvested to study the applicability of chilling to keep the mussels alive for a longer period of time and to review existing methods of packaging and transport. Data obtained from preliminary ... -
Feeding behavior and food preference of Penaeus monodon Fabricius with scrap tilapia
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)The time of day during which P. monodon feeds at different depth levels in earthen ponds, and its preference for three types of tilapia feeds (dry, fresh and fermented) were determined. It was observed that P. monodon ... -
Effects of water movement and aeration system on the survival and growth of hatchery bred sugpo (Penaeus monodon Fabricius) in earthen nursery ponds
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)An experiment was conducted to determine the effects of water movement and airlift aeration on the survival and growth of P. monodon fry reared from P4P5 to P32P33 in earthen ... -
Polyculture of milkfish (Chanos chanos) and tiger prawn (Penaeus monodon Fab.) with and without supplemental feeding
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)Twelve 1,000 m2 earthen ponds were used to compare the growth rates, survival and production of milkfish (Chanos chanos) and prawn (Penaeus monodon) in monoculture and polyculture systems in shallow brackishwater ... -
Growth and survival of Penaeus monodon Fabricius zoeae on different diatom feeds
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)A study was undertaken to determine the most suitable food for Penaeus monodon zoea out of mixed diatoms, Skeletonema costatum, Chaetoceros calcitrans and C. gracilis. Results indicate that mixed diatoms and C. gracilis ... -
Evaluation of milkfish (Chanos chanos Forskal) and prawn (Penaeus monodon Fabricius) in polyculture systems
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)The growth, survival and profitability of C. chanos and P. monodon grown in 5 different combinations for 100 days in 500m2 brackish water ponds were assessed. Differences in the growth and production of prawns ... -
Fundamental study on the behavior of milkfish fry for the evaluation of the efficiency of traditional fry collecting gears in the Philippines
; ; Bagarinao, Teodora
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)
The response of Chanos chanos fry to moving and stationary nets of different mesh size and colour, underwater visibility of the nets and water filtration were studied. Results indicate that milkfish fry may be driven by ... -
Effect of substrate types on fecundity and nauplii production of ablated Penaeus monodon Fabricius
; Primavera, Jurgenne; (Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)
Experiments were undertaken to assess the survival, spawning, fecundity and nauplii production of ablated P. monodon females reared in flow-through broodstock tanks with white coralline and black sand substrate for 62 days. ... -
Identification of the postlarval Penaeus (Crustacea, Decapoda, Penaeidae) appearing along shore waters
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)Diagnostic characters for the identification of postlarval Penaeus appearing along the coastal waters of the Philippines are reviewed and categorized, based on materials from the wild and laboratory. Presently there are 7 ... -
A statistical index of growth condition in an aquaculture experiment
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)A simple statistical index, for evaluating the condition of growth in an aquaculture experiment and indicating the extent of effect of any plausible rival hypothesis, is presented. -
Attractants in purified diets
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)Juvenile Penaeus monodon were reared on purified diets containing different attractants used to gelatinize the cornstarch: plain water, shrimp, mussel, squid or trash fish extract. The highest survival rate was observed ... -
A comparative study of various extenders of milkfish, Chanos chanos (Forsskal) sperm preservation
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)Four chemical extenders in 7 different concentrations (potassium chloride, sodium chloride, glucose, sodium citrate, Ringer s solution, cow serum and milkfish (Chanos chanos) serum) were compared in the preservation of ... -
Growth phases of cultured algae used as larval food
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)A study was undertaken to determine the onset and duration of the growth phases of cultured algae commonly used as larval food (Skeletonema costatum, Chaetoceros calcitrans, Tetraselmis chuii, Chlorella vulgaris, Isochrysis ... -
Studies on the egg quality of Penaeus monodon Fabricius based on morphology and hatching rates
Primavera, Jurgenne; (Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)
Eggs of P. monodon are classified into 5 different types on the basis of morphological criteria and hatching rates: A1 eggs, which undergo normal development with 58% hatching rate; A2 eggs, which ... -
Developmental and ecological stages in the life history of milkfish Chanos chanos Forsskal
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)Seven stages in the life history of the milkfish C. chanos , are recognized and suggested: A, embryonic; B, yolksac larval; C, larval; D, postlarval; E, juvenile; F, subadult; G. adult. An outline is presented of the life ... -
Ipil-ipil (Leucaena leucocephala) leaves as a plant protein source in prawn diets
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1980)Penaeus monodon juveniles were fed diets containing fish meal, shrimp head meal and ipil-ipil leaves soaked and unsoaked, local and peruvian varieties. Mean weight gain at the end of 8 wk was significantly highest among ... -
Diel fluctuations in catch of the postlarval Penaeus japonicus group
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1979)Experiments were undertaken in order to measure the diel fluctuations in the catch of the post-larvae of P. japonicus in relation to the tidal cycles, light conditions and water temperature. The fluctuations are discussed ...
