Journal Articles, Conference Papers and Book Chapters by SEAFDEC Staff: Recent submissions
Ipinapakita ngayon ang mga item 1301-1320 ng 1722
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Developmental stages of a microsporidian parasite of the white prawn, Penaeus merguiensis de Man 1888
(University of the Philippines, 1982)A microsporidian parasite found to invade the ovaries of the white prawn, Penaeus merguiensis de Man, 1888, causes the whitening of the mature female gonads. Ultrastructure examination of the white ovaries reveal the ... -
Histopathology of microsporidian infection in white prawn, Penaeus merguiensis de Man, 1888.
(University of the Philippines, 1982)Different stages of the white prawn, Penaeus merguiensis de Man, were examined for microsporidian infection. The parasite was found only in adult female prawns exhibiting white instead of the normal olive-green ovaries. ... -
Effect of light quality and eyestalk ablation on ovarian maturation in Penaeus monodon
(University of the Philippines Los Baños, 1981)Prawns were subjected to the following treatments: blue light, red light, natural light, and natural light plus unilateral eyestalk ablation. Unablated prawns under blue and natural light developed stage III ovaries; under ... -
An assessment of algal growth in net cages in Laguna Lake
(Fisheries Research Society of the Philippines, 1981)Quantitative determination of the algal population, in terms of cells/ml and biomass/ml, was conducted during the first month of growing P. monodon postlarvae in Laguna Lake. Algae were sampled from each side of net cages ... -
A comparison of two prawn (Penaeus monodon ) brood stock systems—land–based tanks and marine pens
(World Aquaculture Society, 1981)The paper compares two prawn (Penaeus monodon) brood stock systems—land-based tanks and marine offshore pens. Construction costs and annual maintenance and operating costs total US\$1,430 and \$2,550 for the tank and \$1,500 ... -
Lactate dehydrogenase isozyme patterns during the development of milkfish, (Chanos chanos (Forskal))
(University of the Philippines at Los Baños, 1981)Polyacrylamide disc gel electrophoresis was done to determine the lactate dehydrogenase (LDH) isozyme patterns for fry (5-3 mg), fingerling (6-12 g), pond-size (150-250 g) and adult (6-9 kg) milkfish. The patterns were ... -
The hydraulic control structure: A threat to the fishpen industry in Laguna de Bay.
(Natural Resources Management Center, 1981) -
Identification of postlarvae of the genus Penaeus appearing in shore waters
(Carcinological Society of Japan, 1981)Diagnostic features for the identification of postlarval Penaeus found in the shore waters of the Philippines are described and categorized based on specimens caught from the wild and those hatched and reared in the ... -
Studies on the habitat and food of juvenile milkfish in the wild
(Fisheries Research Society of the Philippines, 1981)Juvenile milkfish (Chanos chanos ) were collected from several different wild environments in Panay Island and neighboring islands. The fish were measured and the food ingested examined. Conditions of milkfish habitats ... -
A new device for recording the feeding activity of milkfish
(The Japanese Society of Scientific Fisheries, 1981)Knowledge on the feeding activity is basic and very important for rearing fish. The information on the feeding activity rhythm of the animal suggests the proper time to feed it. Many devices have been designed to record ... -
Viability of frozen algae used as food for larval penaeids
(Fisheries Research Society of the Philippines, 1981)Freezing with added chemicals as flocculants and protectants as means of preserving stock cultures was tried with four species commonly used as larval food. The species were Chaetoceros calcitrans, Skeletonema costatum, ... -
Effect of different stocking combinations on growth, production and survival of milkfish (Chanos chanos Forskal) and prawn (Penaeus monodon Fabricius) in polyculture in brackishwater ponds
(Elsevier, 1981)Milkfish (Chanos chanos) and prawn (Penaeus monodon) were stocked in 500 m2 earthen ponds from 12 November 1978 to 15 March 1979 at the following combinations: 2000 milkfish fingerlings per ha (treatment I); 2000 milkfish ... -
Acute toxicity of un-ionized ammonia to milkfish (Chanos chanos) fingerlings
(Fisheries Research Society of the Philippines, 1981)The acute toxicity of un-ionized ammonia to milkfish (Chanos chanos) fingerlings was determined using a static bioassay system. The 24-, 48-, 72-, and 96-hr LC50 values were calculated at 25.74 ppm NH3-N ... -
Developmental and ecological stages in the life history of milkfish Chanos chanos (F.)
(Fisheries Research Society of the Philippines, 1981)Seven stages in the life history of milkfish Chanos chanos are suggested: embryonic, yolksac larval, larval, postlarval, juvenile, sub-adult and adult stages. These were based on morphological differences and on their ... -
Pigmentation pattern in the early developmental stages of milkfish (Chanos chanos): A key for larval identification.
(Fisheries Research Society of the Philippines, 1981)Pigmentation patterns are presented for 5 - 20 day old milkfish (Chanos chanos) and are discussed in terms of their use in larval identification. -
Survival, growth and production of Penaeus monodon Fabricius at different stocking densities in earthen ponds with flow-through system and supplemental feeding.
(Fisheries Research Society of the Philippines, 1981)Penaeus monodon juveniles (P53-P54, 0.45 g) were stocked in 200 m2 earthen ponds with water exchange rate of 5-10% daily, and reared for 3.5 months. Stocking density levels of 2.5, 5.0, 10 ... -
Feeding behavior and food preference of Penaeus monodon Fabricius with scrap Tilapia mossambica
(Fisheries Research Society of the Philippines, 1981)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 ... -
The skull of milkfish, Chanos chanos Forsskal
(Japanese Society of Systematic Zoology, 1980)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. -
The effects of feeds and feeding levels on the survival of a prawn, Penaeus monodon larvae
(Kagoshima University Research Center for the South Pacific, 1980)Penaeus monodon larvae were grown from zoea1 to mysis2 stages using varying levels of single-celled Chaetoceros sp., baker's yeast, and a combination of the two. The effects of feeds and feeding on ... -
Studies on the fungal diseases in crustaceans. II. Haliphthoros philippinensis sp. nov. isolated from cultivated larvae of the jumbo tiger prawn (Penaeus monodon)
(Mycological Society of Japan, 1980)Haliphthoros philippinensis sp. nov., isolated from larvae of P. monodon is described and illustrated as new. The fungus grew at a temperature range of 13.5-36.3 C, with the optimum of 29.3-34.5 C. Growth occurred in ...
