Now showing items 3079-3098 of 3272

    • Article

      Traditional devices for capturing crabs used in the Philippines today 

      H Motoh - Researches on Crustacea, 1983 - Carcinological Society of Japan
      The author intends to illustrate and describe the indigenous devices traditionally used to capture crabs including the constructions and the operational manners. Also the present writing is hoped to play a role in disseminating the record of the unique devices among local Philippine people and continued use of them. It may be added that the biological significance related to these devices may worth to be recorded.
    • Conference paper

      Training and information activities and accomplishments of the SEAFDEC Aquaculture Department, 1988-1991 

      CT Villegas - In CT Villegas, MT Castaños & RB Lacierda (Eds.), Proceedings of the Aquaculture Workshop for SEAFDEC/AQD Training Alumni, 8-11 September 1992, Iloilo, Philippines, 1993 - Aquaculture Department, Southeast Asian Fisheries Development Center
      One of the mandates of the SEAFDEC Aquaculture Department is the development of human resources and dissemination and exchange of information in aquaculture to promote the aquaculture industry in Southeast Asia. The Department receives trainees from SEAFDEC Member Countries (Thailand, Malaysia, Singapore) and other countries for short-term training programs. AQD also disseminates and exchanges information on aquaculture research and technology through symposia, seminars, workshops, video programs, and publications.
    • Conference paper

      Training and information dissemination at SEAFDEC AQD 

      CT Villegas - In TU Bagarinao & EEC Flores (Eds.), Towards sustainable aquaculture in Southeast Asia and Japan: Proceedings of the Seminar-Workshop on Aquaculture Development in Southeast Asia, Iloilo City, Philippines, 26-28 July, 1994, 1995 - Aquaculture Department, Southeast Asian Fisheries Development Center
      The SEAFDEC Aquaculture Department (AQD) is mandated to develop human resources and to disseminate and exchange information for aquaculture development in the region. In 1991-1994, a total of 294 participants attended 23 sessions of nine training courses. Many others participated in AQD's student practicum, internships, and summer work programs. AQD conducted seminarworkshops on aquaculture development in southeast Asia, fish breeding, feeds and feeding, and training needs. Information materials (newsletters, a monograph, two extension manuals, leaflets, and videos) were produced based on research at AQD. To assist fishfarmers and other sectors of the local aquaculture industry, AQD conducted on-site or outreach seminars, and provided resource persons during fairs and exhibits, seminars, and consultative meetings. The AQD Library is open to all users; in addition to the collection of printed materials, a CD-ROM reader is now available for fast retrieval of bibliographic information from computerized databases like ASFA.
    • Meeting report

      Training course on mangrove-friendly shrimp aquaculture. 

      PL Torres Jr. - 2004 - Aquaculture Department, Southeast Asian Fisheries Development Center
      The culture of shrimps is a worldwide multi-dollar industry that experienced a phenomenal growth in the early eighties. Thereafter, growth was modest due to the advent of diseases and the rise of environment advocacy. One problem that persistently plagues the industry is the perception that shrimp culture prospered at the expense of mangrove systems.

      The need to address this problem led SEAFDEC/AQD to embark on a research program aimed at reconciling shrimp culture and mangroves issues. The Government of Japan gave importance to this program through its generous financial support. As a result, a mangrove-friendly shrimp grow-out technology was developed. Field-testing of this technology in several sites in the Philippines has proven that shrimp culture and mangroves can actually co-exist. Field-testing in the other SEAFDEC Member Countries is also ongoing.

      Based on the technology thus developed, AQD designed a training course on mangrove-friendly shrimp culture, to help disseminate the technology to the SEAFDEC Member Countries.
    • Book

      Training handbook on rural aquaculture 

      Southeast Asian Fisheries Development Center, Aquaculture Department - 2009 - Aquaculture Department, Southeast Asian Fisheries Development Center
      This handbook covers four important factors in undertaking sustainable aquaculture livelihood namely: (1) aquatic resources and environment; (2) socioeconomic attributes of fishing communities; (3) appropriate and economically feasible aquaculture technologies; and, (4) policy issues and institutional arrangements related to a balanced fishery management and aquaculture livelihood. The long-term outcomes of these strategies shall be measured in terms of environmental sustainability, economic uplift of the community, and equitable distribution of benefits among different sectors of the community.
    • Conference paper

      Training needs and provision in developing countries of the Asia-Pacific region 

      CR Lavilla-Pitogo - In B Dodet & OIE Scientific & Technical Department (Eds.), The OIE Global Conference on Aquatic Animal Health, Bergen, Norway, 9-12 October 2006, 2007 - Karger
      Training has played a significant role in the development of capacity in aquatic animal health in the Asia-Pacific region where most specialists have fisheries or a background in biology rather than in veterinary medicine. Training courses offered by various organizations, national institutes, universities and the private sector are aimed at providing graduates with skills in disease diagnostics using molecular methods, histopathology, epidemiology, immunology, as well as in disease prevention and control methods. Most training programmes either focus on diseases affecting specific commodities, such as shrimp, marine fish or molluscs, or on diagnostic methods for pathogens such as viruses. Because of the need to train a large pool of geographically dispersed participants, innovative and cost-effective ways of delivery like online and on-site training should be encouraged as well as workshops preceding or following meetings and symposia. One important aspect to be addressed is the translation of training materials to facilitate knowledge transfer to the farm level. Since the inadequate level of aquatic animal health expertise in the Asia-Pacific affects worldwide aquaculture, partnerships between governments, various international organizations and academia should be strengthened in order to fill the training gap.
    • Book chapter

      Training program of SEAFDEC/AQD 

      KG Corre - In Training Handbook on Rural Aquaculture, 2009 - Aquaculture Department, Southeast Asian Fisheries Development Center
    • Conference paper

      Training programs of SEAFDEC Aquaculture Department 

      J Honculada-Primavera - In JV Juario & LV Benitez (Eds.), Seminar on Aquaculture Development in Southeast Asia, 8-12 September 1987, Iloilo City, Philippines, 1988 - Aquaculture Department, Southeast Asian Fisheries Development Center
      With training as one of its three mandated functions, the SEAFDEC Aquaculture Department offered its first training course in 1974. Since then it has trained some 6 519 participants in various degree and non-degree programs. The degree courses are MS. Fisheries (Aquaculture) and M. Aquaculture in collaboration with the University of the Philippines in the Visayas.

      The non-degree programs include regular short-term courses, onsite seminars internship training and practicum for graduating students. The "hands-on" short-term courses cover Prawn Hatchery and Nursery, Marine Finfish Hatchery, Brackishwater Pond Culture, Sanitation and Culture of Bivalves, Freshwater Aquaculture, Aquaculture Management, Aquaculture Engineering, and Aquaculture for Social Scientists. A profile of 637 1982-1986 training participants show 82.3% from Southeast Asia, 79% male and 57.5% from government sector.

      The paper discusses planning and implementation of training programs, funding support (Japanese Government, International Development Research Centre of Canada, FAO Network of Aquaculture Centres in Asia), and future trends.
    • Book | Conference publication

      Transboundary fish diseases in Southeast Asia: Occurrence, surveillance, research and training 

      CR Lavilla-Pitogo & K Nagasawa (Eds.) - 2004 - Aquaculture Department, Southeast Asian Fisheries Development Center
      The meeting aims to share and collect the most current information on the occurrence of transboundary fish diseases and surveillance, quarantine, diagnosis, monitoring, research and training for aquatic animal diseases in the SEAFDEC member countries. In the meeting, three viruses, namely KHV, WSSV and TSV, were highlighted because of their high virulence and devastating impact to the region.
    • Meeting report

      Transboundary movement of exotic shrimp species in the Asian region. 

      CR Lavilla-Torres - 2004 - Aquaculture Department, Southeast Asian Fisheries Development Center
      This compiled information were based on presentations at the AQUAMARKET Shrimp Session in Manila, Philippines, 2-6 June 2003, made by T.W. Flegel (BIOTEC), C.V. Mohan (NACA), P. Chanratchakool (AAHRI), and C.R. Lavilla-Torres (SEAFDEC).
    • Conference paper

      Transboundary shrimp viral diseases with emphasis on white spot syndrome virus (WSSV) and taura syndrome virus (TSV) 

      LD de la Peña - In CR Lavilla-Pitogo & K Nagasawa (Eds.), Transboundary Fish Diseases in Southeast Asia: Occurence, Surveillance, Research and Training. Proceedings of … Diseases in Southeast Asia: Occurence, Surveillance, Research and Training, Manila, Philippines, 23-24 June 2004, 2004 - Aquaculture Department, Southeast Asian Fisheries Development Center
      Crustaceans, specifically the cultured penaeid shrimp, are adversely affected by a number of diseases. Crustacean diseases that have significant social or economic impact on culture are mostly infectious in nature and many of them have no therapeutic remedies or treatments. There are currently 8 diseases of crustaceans listed by the OIE, seven of which are viral diseases of penaeid shrimp. This summary discusses two of the most important viral diseases in penaeid shrimp, white spot syndrome virus (WSSV) and Taura syndrome virus (TSV).
    • Conference paper

      Transferable drug resistance plasmids in fish-pathogenic bacteria. 

      T Aoki - In JR Arthur, CR Lavilla-Pitogo & RP Subasinghe (Eds.), Use of Chemicals in Aquaculture in Asia : Proceedings of the Meeting on the Use of Chemicals in Aquaculture in Asia 20-22 May 1996, Tigbauan, Iloilo, Philippines, 2000 - Aquaculture Department, SEAFDEC
      Chemotherapeutic agents have been developed for treating bacterial infections and have been widely used for cultured fish for the last 30 years in Japan. The extensive use of chemotherapeutants has resulted in an increase in the occurrence of drug resistance in fish-pathogenic bacteria and also in the bacterial flora of the intestinal tract of cultured fish. The kinds of chemotherapeutants used are correlated with the occurrence of the corresponding drug-resistant genes in fish-pathogenic bacteria. Almost all multiple-drug resistant strains are carried on the transferable R plasmid, although resistance in fish pathogens to nitrofuran derivatives and pyridonecarboxylic acids is associated with a chromosomal gene. The DNA sequences of R plasmids generally differ depending on the species of fish pathogen. Exceptions are the R plasmids of Aeromonas hydrophila and A. salmonicida, which have the same resistance markers as chloramphenicol, streptomycin, and sulfonamides (SA); and the R plasmids of A. hydrophila and Edwardsiella tarda, which have the same resistance markers as SA and tetracycline. The fish pathogens A. hydrophila, A. salmonicida, E. tarda, Enterococcus seriolicida, Pasteurella piscicida, and Vibrio anguillarum are all widely distributed in fish farms in various areas, and within each species the R plasmid has an identical DNA sequence. The chloramphenicol resistance (cat) gene of the R plasmid from Gram-negative bacteria was classified into CAT I, II, III, and IV according to the DNA sequence. The cat gene of P. piscicida was classified as CAT I, those of A. salmonicida and E. tarda were classified as CAT II, and that of V. anguillarum was classified as CAT II or IV, depending on the time the strains were isolated. The tetracycline-resistance determinants (Tet), which occur in six classes (Tet A through Tet G), were class D in the R plasmids obtained from strains of V. anguillarum that were isolated from 1989 to 1991. The Tet for strains of V. anguillarum isolated from 1973 to 1977 was classified as Tet B, while for strains isolated from 1980 to 1983 it was classified as Tet G.
    • magazineArticle

      Transforming a coral reef cove into mariculture hub: Igang marine station of SEAFDEC/AQD 

      Southeast Asian Fisheries Development Center, Aquaculture Department - Fish for the People, 2015 - SEAFDEC Secretariat
    • Conference paper

      Transgenic fish and aquaculture 

      TT Chen - In TU Bagarinao & EEC Flores (Eds.), Towards sustainable aquaculture in Southeast Asia and Japan: Proceedings of the Seminar-Workshop on Aquaculture Development in Southeast Asia, Iloilo City, Philippines, 26-28 July, 1994, 1995 - Aquaculture Department, Southeast Asian Fisheries Development Center
      Transgenic fish species can be routinely produced by transferring foreign DNA into developing embryos via microinjection or electroporation. This technology offers an excellent opportunity for modifying or improving the genetic traits of commercially important Fishes, mollusks, and crustaceans for aquaculture. Studies have shown that administration of recombinant fish or mammalian growth hormone (GH) to juvenile fish or oysters resulted in significant growth enhancement. Thus, it is possible to improve the growth rates of marine animals by manipulating GH or its gene. This paper reviews the results of studies to determine the efficacy of recombinant fish GH in improving the growth rates of fishes, mollusks, and crustaceans, and of gene transfer technology in producing fast-growing transgenic animals.
    • Article

      Transition from endogenous to exogenous nutrition sources in larval rabbitfish Siganus guttatus 

      H Kohno, S Hara, M Duray & A Gallego - Nippon Suisan Gakkaishi, 1988 - Japanese Society of Fisheries Science
      The early larval development of Siganus guttatus was studied with emphasis on the transition from endogenous to exogenous feeding. Three rearing trials were conducted as follows: 1) rearing in a 5 ton concrete tank at 27.9-29.3oC (T-85 trial); 2) rearing in a 0.5 ton fiberglass tank at 22.2-26.5oC (T-86A trial); 3) rearing in the same manner as in T-86A but without food (T-86B trial). On the basis of the developmental events and energy flow in T-86A trial, the early life history of the species could be divided into the following seven phases: 1) rapid larval growth due to rapid yolk resorption (from hatching to about 15 h after hatching (time after hatching: TAH)); 2) slow growth and organogenesis based mainly on yolk energy (to about 50 h TAH); 3) slow growth based on energy of yolk, oil globule and exogenous food (to about 50 h TAH); 4) slow growth based on two sources of energy, oil globule and exogenous food (to about 90 h TAH); 5) the same mode of development and energy flow as in the preceding phase, but with a certain level of feeding amount (to about 120 h TAH); 6) accelerated larval growth and effective feeding and swimming based only on exogenous food (to about 150 h TAH); and 7) the same mode as in the preceding phase with accelerated increase of feeding amount (beyond 150 h TAH). Differences in developmental mode were observed in T-85 and T-86A trials, but it could not be ascertained in this particular study which of the environment factors played the greatest influence. The results of T-86A and B showed that the larvae, in order to survive, have to get over two obstacles on feeding, that is, to start feeding and to change from endogenous to exogenous feeding suitably.
    • Conference paper

      Translocation of the clupeid Sardinella tawilis to another lake in the Philippines: A proposal and ecological considerations. 

      AC Mamaril - 2001 - Aquaculture Department, Southeast Asian Fisheries Development Center; Philippine Council for Aquatic and Marine Research and Development; Bureau of Fisheries and Aquatic Resources
      The dwindling commercial catch of Sardinella tawilis (Clupeidae), locally known as 'tawilis', reported in recent years by local fisher folk in Lake Taal, Batangas, Philippines, could be a result of the interaction of factors such as over fishing, destructive fish-capture techniques, changes in water quality, and others. Like the rest of the handful of endemic freshwater fish species in the Philippines, S. tawilis is threatened with depletion of its stocks, if not with extinction in the near future. A conservation strategy that could be considered is the translocation of 'tawilis' to another lake in the Philippines, whose ecological features closely resemble those of Lake Taal and where 'tawilis' would receive socio-economic and cultural acceptability. Cases of clupeid introductions - natural and man-made, successes and failures - are presented from published literature. Special attention is given to the case of a well-planned trans-country (Thailand-to-Indonesia) attempt to introduce a clupeid fish. The broader questions of biodiversity, endemicity, conservation, and fish community structure in Lake Taal (and elsewhere) must be underpinned by sound basic taxonomy and ecology.
    • Book chapter

      Transplantation, hatchery, and grow-out of window-pane oyster Placuna placenta in Guimaras and Iloilo 

      SS Garibay, SN Golez & AS Unggui - In T Bagarinao (Ed.), Research Output of the Fisheries Sector Program, 2007 - Bureau of Agricultural Research, Department of Agriculture
      The windowpane oyster Placuna placenta (local name kapis) used to be harvested in large quantities and support a shellcraft industry in the Philippines, particularly in Panay Island. But the fishery and the industry declined markedly by the 1990s. Studies were conducted to transplant kapis and also to develop hatchery techniques for it in an effort to counter the population depletion. Kapis with average shell heights of 7 cm and 10 cm were transplanted from Roxas City in northern Panay Island and from Oton, Iloilo in southern Panay to Taklong Island in Guimaras during the rainy season (July–November) and the dry season (February–June). Survival of the transplants was higher during the dry season (57–60%) than during the rains (35–48%). Sexually mature kapis 10 cm in shell height were induced to spawn by temperature manipulation, water level manipulation, and use of ultravioletirradiated sea water. Spawning was successfully induced by raising the water temperature to 29±0.5oC. Eggs measured 45 μm on average, and fecundity was 5,000–10,000 per female. Kapis larvae were reared on a combination of the microalgae Isochrysis galbana, Tetraselmis sp., and Chaetoceros calcitrans, maintained at a density of 100,000 cells/ml. Three water treatment schemes were tested for larval rearing: chlorination, ultraviolet irradiation, and filtration (control). Larvae survived to the umbo veliger stage (180 μm, day 10) in chlorinated sea water whereas mass mortality occurred at the straight-hinge stage (days 4–) in both UV-treated and filtered sea water.
    • Article

      Transport of hatchery-reared and wild grouper larvae, Epinephelus sp. 

      CB Estudillo & MN Duray - Aquaculture, 2003 - Elsevier
      Optimum packing conditions for the transport of hatchery-reared and wild grouper larvae were investigated under simulated condition or actual air transport. Simulation of transport motion was done through the use of an electric orbit shaker to identify the best packing conditions for the transport of grouper larvae at various ages. Simulated transport was conducted in hatchery-reared grouper larvae at day 35 (mean TL=14.73 mm), 45 (mean TL=15.23 mm) and 60 (mean TL=28.16 mm) at packing densities of 50, 100 and 200 larvae l−1 and at high (28 °C) or low (23 °C) temperatures. Packing density of 50 larvae l−1 was best for 45- and 60-day-old larvae 8 h transport at low temperature. However, packing density could be increased to a maximum of 100 larvae l−1 8 h transport at 23 °C with mortality rates ranging from 2.3% to 5.3%. The increase in total NH3 level was dependent on temperature, packing density and size of larvae. High packing density (100–200 larvae l−1) and temperature (28 °C) resulted in increased NH3 level and mortality rates during transport. In addition, regardless of the temperature, NH3 levels were consistently higher for 60-day-old larvae. Day-60 grouper larvae displayed strong resistance to handling/mechanical stress compared to 35-day-old larvae probably because most are already fully metamorphosed at this stage. Based on these results, a packing density of 50 larvae l−1, a temperature of 23 °C and larval age of 60 days were considered as the best transport conditions for hatchery-reared grouper larvae. When these transport conditions were used in experiment 2, for 26-day-old hormone-metamorphosed, 60-day-old naturally metamorphosed or 60-day-old pre-metamorphosing hatchery-reared grouper larvae, a 100% survival rate was attained in all treatments. Seven days of hormone (T3) treatment did not accelerate metamorphosis of wild-caught transparent grouper larvae (tinies) significantly. Survival rates of hormone-treated transparent tinies (H-tinies), untreated black tinies (B-tinies) and untreated transparent tinies (T-tinies) were also similar after 8–9 h air transport (experiment 3). The results of the current study suggest that T3 treatment did not affect the performance of hatchery-reared and wild-caught transparent tinies/larvae during transport. In addition, mass mortalities of these transported tinies during the nursery phase were associated with nutritional aspect and the sudden confinement of these undomesticated wild-caught grouper to small space rather than transport or hormone treatment effects.
    • Article

      Transport of Scylla serrata megalopae at various densities and durations 

      ET Quinito & FD Parado-Estepa - Aquaculture, 2000 - Elsevier
      The optimal conditions for transport of Scylla serrata megalopae were determined. Loading densities of 50, 100 and 150 ind l−1 of hatchery-reared megalopae were studied over a 6-h simulated transport, including shaking. Survival immediately after transport was significantly higher at 50 ind l−1 (99.3±1.6%) (mean±x%) than at 100 (93.0±5.0) and 150 ind l−1 (94.0±3.8%). The same trend was noted 15 h after transport. Another experiment compared survival of megalopae packed at 50 and 100 ind l−1 with simulated transport of various durations (3, 6, and 9 h) at mobile and stationary conditions. Regardless of the duration and condition of transport, survival was again significantly higher at 50 ind l−1 (86.7±2.4%) compared to 100 ind l−1 (79.7±2.1%). Megalopae that were shaken or remained unshaken for 3 or 6 h had similar survival through transport as those shaken for 9 h. Megalopae that remained unshaken for 9 h gave the lowest survival among treatment groups (38.7±0.2%).

      Due to cannibalistic behavior, stationary transport conditions may have provided the megalopae with a chance to grasp each other. In a third experiment, a batch of megalopae was packed at water temperature levels of 20, 24, and 28°C (ambient) at 50 and 100 ind l−1 for 6 h simulated transport, including shaking. Density and temperature separately influenced survival. Survival was lower at 28°C than 24°C. Although megalopae were less active at 20°C, survival was similar to that at 24°C and 28°C. These results provide useful information for megalopae transport from hatchery to ponds.
    • Article

      Transport of sugpo, Penaeus monodon juveniles 

      W Yap, H Mochizuki & F Apud - SEAFDEC Aquaculture Department Quarterly Research Report, 1979 - Aquaculture Department, Southeast Asian Fisheries Development Center