Browsing 01 SEAFDEC/AQD Publications by Author "Gacutan, R. Q."

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    • 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 102 to 5.1 -10.0 x 105 cells per ml. ...
    • Series: Aquaculture extension manual; No. 16

      Diseases of penaeid shrimps in the Philippines 

      Baticados, Maria Cecilia L.; Cruz-Lacierda, Erlinda R.; de la Cruz, Margarita; Duremdez-Fernandez, Roselyn C.; Gacutan, Rogelio Q.; Lavilla-Pitogo, Celia R.; Lio-po, Gilda D. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1990)
      The manual provides information on the diseases that affect the 3 major species of shrimps culture in the Philippines: Penaeus monodon, P. merguiensis and P. indicus. It includes the common name of the disease, causative ...

    • Diseases of prawns (pests & diseases of sugpo) 

      Gacutan, Rogelio Q. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1979)

    • 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 (Z2), Mysis 1 (M1) and Postlarva 1 (P1) of P. monodon artificially spawned in closed-system concrete hatchery tanks were bioassayed for their tolerance to the antibiotic furanace. ...

    • 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 ...

    • Isolation and culture in artificial media of Lagenidium from Penaeus monodon larvae 

      Baticados, Ma. Cecilia L.; Po, Gilda L.; Lavilla, Celia R.; Gacutan, Rogelio Q. (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 ...

    • 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 ...

    • 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 ...