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

    In vitro effects of fungicides on the fungus Haliphthoros philippinensis 

    GD Lio-Po, MCL Baticados, CR Lavilla & MEG Sanvictores - SEAFDEC Aquaculture Department Quarterly Research Report, 1981 - SEAFDEC Aquaculture Department
    Pure cultures of Haliphthoros philippinensis, isolated from infected Penaeus monodon larvae, were exposed for 24 hours to varying concentrations of antifungal agents. The efficiency of each agent to inhibit sporulation and mycelial growth was measured. Effects on P. monodon eggs and larvae were also investigated. It is concluded that preliminary bioassay of larval tolerance to the suggested effective doses should always be made prior to prophylaxix or therapeutic applications.
  • Article

    Culture of grey mullet, Mugil cephalus, Linnaeus in brackishwater ponds at two stocking densities 

    DD Baliao, EM Rodriguez & DD Gerochi - SEAFDEC Aquaculture Department Quarterly Research Report, 1981 - SEAFDEC Aquaculture Department
    The culture potential of hatchery-produced grey mullet (Mugil cephalus , Linnaeus) stocked with average weight of 3.7 g and at 2,500 (treatment I) and 3,000 (treatment II) fingerlings/ha in six 350m brackishwater ponds following the lab-ab method of culture was studied.
  • Article

    Effects of increased stocking density and supplemental feeding on the production of milkfish fingerlings 

    CT Villegas & I Bombeo - SEAFDEC Aquaculture Department Quarterly Research Report, 1981 - SEAFDEC Aquaculture Department
    Experiments were conducted to determine the effects of increased stocking density and supplemental feeding on survival and growth of milkfish (Chanos chanos) fry to fingerling stage and also to evaluate the profitability of supplemental feeding in the milkfish fry nursery. Results showed that increased stocking density from 50 to 75 fry/m2 increased net income and is profitable. Survival was further increased through supplemental feeding with rice bran, which is cheap and easily obtainable.
  • Article

    The water stability of shrimp diets with various polysaccharides as a binding agent 

    T Murai, A Sumalangkay & FP Pascual - SEAFDEC Aquaculture Department Quarterly Research Report, 1981 - SEAFDEC Aquaculture Department
    The water stability of shrimp (Penaeus monodon) diets with various polysaccharides as binding agents were tested without steaming. The diet with alginate showed the best water stability and did not completely disintegrate in 24 hours. However, the use of alginate is dependent on cost and availability, so alternate choices may be a combination of sago palm starch and wheat flour or glutinous rice flour.
  • Article

    Survival, growth and production of Penaeus monodon and P. indicus at different density combinations with milkfish 

    FD Apud & SH Benagua - SEAFDEC Aquaculture Department Quarterly Research Report, 1981 - SEAFDEC Aquaculture Department
    Penaeus monodon and P. indicus juveniles were stocked and reared for about 3 months in earthen ponds at different density combinations with Chanos chanos. The presence of either Penaeus species at any density ratio did not affect significantly the C. chanos survival. Survival rates of the penaeids indicated that intraspecific and interspecific competition occurred and were reduced with the reduction in stocking rate. It is concluded that further studies on higher density ratios and feeding and economic consideration would be of help to the development of this kind of fishpond management system.

View more