Institutional Reports: Recent submissions
121-140 / 178
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Isolation and culture in artificial media of Lagenidium from Penaeus monodon larvae
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)Fungal infection of P. monodon larvae is a problem in hatchery operations. The fungus, which attacks the nauplius to postlarval stages and causes up to 100% mortality, has been tentatively identified as belonging to the ... -
Methods of harvesting and preservation of the diatom Chaetoceros calcitrans
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)Diatom culture and larval feeding experiments were conducted to test the viability and acceptability of preserved algal concentrates. C. calcitrans is characterised by the presence of setae which keep them suspended in ... -
Amino acid analysis of P. monodon muscle
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)Figures for the amino acid composition of Penaeus monodon, are tabulated, and compared to those for white tuna meat. -
Laboratory breeding of the mud crab Scylla serrata (Forskal) through the zoea and megalopa stages to the crab stage
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)A series of experiments is being conducted to establish breeding techniques to mass-produce seedlings of S. serrata for pond cultivation to meet the commercial demand for the crab. The objective is to culture the crab ... -
Salinity preference of the milkfish Chanos chanos Forskal
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)Extended abstract only. -
Use of fermented kitchen waste in rearing Penaeus monodon larvae
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)Fermented vegetable and kitchen wastes are available as feeds for not only zoea but also mysis and up to certain points in the postlarval stages of sugpo, Penaeus monodon. It is recommended that the hatchery use fermented ... -
Effect of temperature on the oxygen consumption of Penaeus monodon postlarvae
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)Extended abstract only. -
Effect of nitrite, ammonia, and temperature on P. monodon larvae
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)P. monodon larvae were studied for the effects of temperature, ammonia, and nitrite on survival. Toxicity levels of nitrite were found to vary with larval stage. Larvae could tolerate ammonia up to about 10 ppm, with the ... -
Notes on ovarian rematuration of ablated sugpo (prawn) Penaeus monodon Fabricius
Primavera, Jurgenne
; (Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
To what extent spent P. monodon females can remature and spawn successive broods is an important question in terms of recycling spawners in a commercially viable operation. Corollary to this is the quantity and quality of ... -
Effect of different light intensities on the growth of the diatom Chaetoceros calcitrans
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)Batch cultures of C. calcitrans were maintained indoors at a temperature range of 21 to 25 C and continuously illuminated by 40-watt daylight fluorescent lights. Cultures were exposed to 5 different intensities from 200 ... -
Effect of some physico-chemical factors on the survival and growth of Penaeus monodon postlarvae
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)Growth and survival rates of P. monodon postlarvae were examined at different temperatures, salinities, and nitrite and ammonia concentrations, using one feed level. Condition of postlarvae greatly affected the experimental ... -
Organic pollution in culture water resulting from excess feed and metabolite buildup
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)Penaeus monodon postlarvae were subjected to increasing feed concentrations and their growth and survival rates were recorded. Measurements were made of dissolved organic matter, and ammonia and nitrite-nitrogen concentrations. ... -
Ecology and life history of penaeid shrimps
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)Fourteen species of penaeid shrimps with commercial value in Batan Bay and Tigbauan-Guimbal waters were identified as follows: Penaeus monodon, P. semisulcatus, P. japonicus, Metapenaeus ensis, M. burkenroadi, M. endeavouri, ... -
Land-based mass production of prawn (Penaeus monodon Fabricius) spawners
Primavera, Jurgenne (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 P10 fry. Survival of females after 1 month was approximately 30%. Mortalities were mostly ... -
Survival rates of different postlarval stages of Penaeus monodon Fabricius
Primavera, Jurgenne (Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
The objective of this study is to determine survival rates of different postlarval stages upon stocking in the Leganes ponds. Twelve 3m x 2m x 2m suspension nets made of nylon cloth (mesh size = 0.1 mm) were set up in a ... -
Notes on the induced maturation and spawning in four-month-old Penaeus monodon Fabricius by eyestalk ablation
Primavera, Jurgenne; (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. ... -
Notes on the external sex characters of Chanos chanos Forskal spawners
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)In this study, the authors did not find any visible differences between the sexes with reference to external features such as coloration, shape of head, snout and operculum, presence of tubercles or nasal pores, length, ... -
The biology and control of Caligus sp., an ectoparasite of the adult milkfish Chanos chanos Forskal
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)One unidentified species of copepod belonging to the genus Caligus of the family Caligidae was found to infest the adult milkfish broodstock. To control the parasites infesting the adult milkfish, tests were made using the ... -
The propagation of the mud crab Scylla serrata (F.) de Haan
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)The mud crab Scylla serrata is an important commercial species found in many brackish areas in the Philippines. During spawning and hatching, the berried females migrate to the sea. Seeds for pond stocking are obtained ... -
Bioenergetics of the freshwater prosobranch Idiopoma angularis Muller in Laguna de Bay
(Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)This study was made as an attempt to investigate some of the ecological aspects of the freshwater snail Idiopoma angularis Muller in a modern framework of energy flow and mathematical models. It offers the first investigation ...
