Now showing items 1-20 of 125

    • Bacteria from seawater used in Penaeus monodon larval cultures 

      Llobrera, Alcestis T.; Gacutan, Rogelio Q. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
      Bacteria in the seawater used in P. monodon hatchery operations were isolated on Bachmann's agar. The total plate counts in 25 isolations ranged from 1.0 - 5.0 x 10<sup>2</sup> to 5.1 -10.0 x 10<sup>5</sup> cells per ml. ...
    • Reduction in Chaetoceros populations by furanace 

      Baticados, Ma. Cecilia L.; Gacutan, R. Q. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
      One of the most promising prophylactic agents being tested to control Penaeus monodon larval diseases is furanace (6-hydroxymethyl-2 2(5-nitro-2-furyl) vinyl pyridine). To evaluate further its suitability as a chemotherapeutic ...
    • Methods of harvesting and preservation of the diatom Chaetoceros calcitrans 

      Millamena, Oseni M.; Jereos, Eve C.; Gorriceta, Ilda R. (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 ...
    • Notes on ovarian rematuration of ablated sugpo (prawn) Penaeus monodon Fabricius 

      Primavera, Jurgenne H. ORCID; Borlongan, Emeterio (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 ...
    • Preliminary chemical and physical evaluation of some formulated feeds for P. monodon 

      Kalaw, Josie; Bandonil, Lillian; Dy, Veronica (Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
      The culture of Penaeus monodon has explicitly defined the need for diet formulations or supplementary feeds that would promote optimum growth and survival of the animal. A total of 28 feed combinations were developed for ...
    • Effects of furanace on Brachionus 

      Baticados, Ma. Cecilia; Gacutan, Rogelio Q.; Gutierrez, P. J. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
      Tiger prawn P.monodon) larvae utilize Brachionus a rotifer, as food in the Zoea 3 and mysis stages when they change from an herbivorous to an omnivorous diet. The present work aims to show the effects of furanace on the ...
    • Preliminary biological evaluation of some formulated feeds for P. monodon 

      Pascual, Felicitas; Bandonil, Lillian (Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
      Rice bran is widely used by fish farmers as supplementary feed while soybean cake is used both as feed and as fertilizer in fishponds. Both fish meal and shrimp head have been found acceptable as feed ingredients. However, ...
    • Effect of furanace on the development of larval stages of Penaeus monodon Fabricius 

      Gacutan, Rogelio Q.; Llobrera, Alcestis T. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
      Zoea 2 (Z<sub>2</sub>), Mysis 1 (M<sub>1</sub>) and Postlarva 1 (P<sub>1</sub>) of P. monodon artificially spawned in closed-system concrete hatchery tanks were bioassayed for their tolerance to the antibiotic furanace. ...
    • Tolerance of Penaeus monodon larvae to cupric sulfate added in bath 

      Canto Jr., Jose T. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
      Copper is used to deter the growth of bacterial, fungal and protozoan disease organism in fishes. Zoeae (Z<sub>1</sub>), myses (M<sub>1</sub>) and postlarvae (P<sub>1</sub>) were exposed to copper sulfate at concentrations ...
    • A suctorean parasite of Penaeus monodon larvae 

      Gacutan, Rogelio Q.; Llobrera, Alcestis T.; Santiago, Corazon B.; Gutierrez, P. J.; Lio, Gilda (Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
      A new disease caused by a suctorean has been observed in tank-spawned and reared P. monodon larvae. Identification of the etiologic agent pointed to Ephelota gemmipara R. Hertwig, a species commonly found to inhabit hydroid ...
    • Bioenergetics of the freshwater prosobranch Idiopoma angularis Muller in Laguna de Bay 

      Baluyut, Elvira A. (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 ...
    • The effect of various protein levels on the growth and survival rates of Penaeus monodon Fabricius 

      Khannapa, Auaychai (Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
      Postlarvae of tiger prawns, P. monodon , were fed with various protein levels of 0; 30; 40 and 50%, fish meal and rice bran were combined and pelletized for 16 wks. Prawns used had an average mean length of 1.2 mm and an ...
    • Effect of nitrite, ammonia, and temperature on P. monodon larvae 

      Catedral, Francis Fred; Gerochi, Dante D.; Quibuyen, Anacleto T.; Casalmir, Candelaria M. (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 ...
    • Identification and culture of common diatoms as possible feed for Penaeus monodon 

      Pimoljinda, Thanom (Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
      Diatoms were collected from Buyuan Bay, and from the hatchery tanks at Tigbauan, to determine the commonly occurring species, the feasibility of culturing these species, and the potential of these selected species as food ...
    • Use of fermented kitchen waste in rearing Penaeus monodon larvae 

      Motoh, Hiroshi (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 ...
    • Survival rates of different postlarval stages of Penaeus monodon Fabricius 

      Primavera, Jurgenne H. ORCID (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 ...
    • The propagation of the mud crab Scylla serrata (F.) de Haan 

      Laviña, Alice Fe D.; Buling, Amalia S. (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 ...
    • Organic pollution in culture water resulting from excess feed and metabolite buildup 

      Millamena, Oseni M.; Platon, Rolando R. (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. ...
    • The biology and control of Caligus sp., an ectoparasite of the adult milkfish Chanos chanos Forskal 

      Laviña, Einstein M. (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 ...
    • A simple method of tagging prawns 

      Rodriguez, Luis M. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1977)
      The recognition of individual animals is crucial to many aspects of research. Prawns (Penaeus monodon) present unique difficulties in this respect since they molt regularly. Thus, almost all tagging and marking methods ...