The Quarterly Research Report is published by SEAFDEC Aquaculture Department for the research work of its researchers and their staff, and of its research staff on graduate or postgraduate studies. This includes Extended Abstracts, Notes and Study Updates.

Recent Submissions

  • Article

    Improvement of diet attractability for Penaeus monodon by supplementing various attractants 

    T Murai, A Sumalangkay & FP Pascual - SEAFDEC Aquaculture Department Quarterly Research Report, 1981 - Aquaculture Department, Southeast Asian Fisheries Development Center
    An experiment was undertaken to test the effect of supplemental krill meal, earthworm meal, glycine, sucrose or mussel water on diet attractibility of Penaeus monodon. Only glycine or mussel water significantly improved diet attractibility.
  • Article

    Effects of temperature on behavior, growth, development and survival of young milkfish, Chanos chanos Forsskal 

    AC Villaluz & A Unggui - SEAFDEC Aquaculture Department Quarterly Research Report, 1981 - Aquaculture Department, Southeast Asian Fisheries Development Center
    The effects of 3 temperature treatments on activity, feeding, growth, development and survival of young milkfish (Chanos chanos) were investigated under laboratory conditions. It is believed that the results may be applied to develop a land-based mass production technology in rearing milkfish fry to fingerlings.
  • Article

    Dietary crude protein requirement of Tilapia nilotica fry 

    CB Santiago, M Bañes-Aldaba & MA Laron - SEAFDEC Aquaculture Department Quarterly Research Report, 1981 - Aquaculture Department, Southeast Asian Fisheries Development Center
    To determine growth and survival of Tilapia nilotica fry fed formulated practical dry diets with varying crude protein levels, fish were subjected to 3 seperate feeding trials. Isocaloric practical diets containing 20, 25, 30 and 35% crude protein were fed to fry at 15% fish biomass daily for 7 weeks in 2 trials and another set containing 20, 25, 30, 35, 40, 45 and 50% was given for 8 weeks. On the basis of growth, survival and feed conversion, T. nilotica fry required 35% crude protein in the practical diets given at 15% fish biomass.
  • Article

    Effects of exogenous hormone injections on milt consistency in newly caught, wild milkfish 

    JV Juario, GF Quinitio, J Banno & M Natividad - SEAFDEC Aquaculture Department Quarterly Research Report, 1981 - Aquaculture Department, Southeast Asian Fisheries Development Center
    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, wild, mature milkfish (Chanos chanos). In contrast to HCG, single injections of Durandron Forte 250 were effective not only in inducing spermiation but also in maintaining newly caught mature males in good running condition for a maximum of 7 days, despite daily handling and collection of approximately 3ml milt.
  • Article

    Acute toxicity of un ionized ammonia to milkfish (Chanos chanos) fingerlings 

    ER Cruz - SEAFDEC Aquaculture Department Quarterly Research Report, 1981 - Aquaculture Department, Southeast Asian Fisheries Development Center
    The acute toxicity of un-ionized ammonia to milkfish (Chanos chanos) fingerlings was determined using a static bioassay system. Median lethal concentrations found show that milkfish fingerlings have a high tolerance to ammonia and it is unlikely that levels as high as those employed for the acute exposure would be found to occur under natural conditions. Although the threat of acute toxicological effects induced by ammonia are remote, such conditions might be encountered in stressed natural environments or in heavily loaded aquaculture systems.

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