Now showing items 1762-1781 of 3211

    • Meeting report

      The macrobrachium culture industry in Thailand. 

      S Uraiwa & P Sodsuk - 2004 - Aquaculture Department, Southeast Asian Fisheries Development Center
      Giant freshwater prawn (Macrobrachum rosenbergii) is one of the most important economic species in Thailand as well as in many Southeast Asian countries. It is highly demanded as food for the Thais that lead to its gradual over-catching from the natural waters every year. Thus, domestication experiments on the Macrobrachium have been conducted by the Department of Fisheries since 1956 to increase prawn production (Sidthimunka and Bhukaswan, 1982). This resulted in the nationwide extension of its culture technology to a number of commercial giant freshwater prawn culture companies. Now this species has become one of the economic commodities in the country’s aquaculture industry. Recently, statistics report showed that the total prawn culture in 2002 increased by 38% from the year 1996, while the total value in the same year increased by 89% from the year 1996. The statistics also showed that in 1996 and 2002, the total production were 7200 and 10,000 mt, respectively, valued at 596.3 and 1,117.6 million Thai Baht, respectively (Department of Fisheries and Suwannatos, 2003). The market price per kg of freshwater prawn, which varies according to the prawn sizes, has been increasing since 1989. In 1997, the large, medium and small sizes increased by 76%, 123% and 81% from those in year 1989, respectively.
    • Article

      The macronutrient composition of natural food organisms mass cultured as larval feed for fish and prawns 

      OM Millamena, VD Peñaflorida & PF Subosa - The Israeli Journal of Aquaculture-Bamidgeh, 1990 - Society of Israeli Aquaculture and Marine Biotechnology
      The macronutrient composition of natural food organisms that are mass cultured as feed for the larval stages of fish and prawns in the SEAFDEC Aquaculture Department was determined by chemical analysis. The food organisms included five species of marine phytoplanktons (algae): Chaetoceros calcitrans, Skeletonema costatum, Tetraselmis chui, Chlorella vulgaris and Isochrysis galbana, and two zooplanktons: Artemia sp. nauplii (San Francisco Bay strain) and Brachionus plicatilis. The algal species were grown in batches on Guillard and Ryther media and harvested during the exponential phase of growth using a procedure which preserved cellular integrity and prevented cell lysis. The zooplankton were cultured using standard techniques adopted at the SEAFDEC Larval Food Laboratory. Each species was analyzed for proximate composition (protein, fat, fiber and ash) and for mineral content (calcium and phosphorous). Nitrogen-free extract (NFE) was determined by difference. For the five algal species, the protein, fat and NFE contents varied from 22% to 48%, 2% to 16% and 14% to 24%, respectively. The zooplanktons had higher protein and fat contents than any of the phytoplankton species except I. galbana which had the highest fat content. On the other hand, the phytoplanktons, particularly the diatoms which have a siliceous cell wall, contained significantly higher quantities of inorganic matter (ash). C. vulgaris had the highest fiber content which may be attributed to its cellulosic cell wall.
    • Major diseases of cultured fish and shrimp 

      RV Pakingking Jr., ER Cruz-Lacierda & EV Alapide-Tendencia - In Training Handbook on Rural Aquaculture, 2009 - Aquaculture Department, Southeast Asian Fisheries Development Center
    • Article

      Major viral and bacterial disease problems in shrimp culture 

      CR Lavilla-Pitogo - Aquaculture Engineering (Philippines), 1998 - Society of Aquaculture Engineers of the Philippines
      Major disease problems particularly viral and bacterial in origin have resulted in significant decline in the production of farmed shrimps worldwide.

      The major diseases of viral and bacterial origins are listed and described. Innovations being applied to prevent and/or minimize their effects are enumerated.

      The paper suggests a broad outlook of shrimp disease by considering not only the etiological causes but also the epidemiological approach. Attempts to produce disease-free fry are still expensive and cannot be applied widely in commercial farms. The aim is to attain sustainable shrimp farming.
    • magazineArticle

      Make your own gulaman from seaweeds 

      Southeast Asian Fisheries Development Center, Aquaculture Department - Aqua Farm News, 1991 - Aquaculture Department, Southeast Asian Fisheries Development Center
    • magazineArticle

      Making shrimp cake 

      Southeast Asian Fisheries Development Center, Aquaculture Department - Aqua Farm News, 1990 - Aquaculture Department, Southeast Asian Fisheries Development Center
    • Book

      The Malalison experience: empowering an island community in west central Philippines 

      RF Agbayani, CL Marte, DB Baticados, EC Amar & MT Castaños - 2009 - Aquaculture Department, Southeast Asian Fisheries Development Center
      A 64-page booklet that describes SEAFDEC/AQD’s community fishery resources management project from 1991 to 1998 with a post project assessment in 2009.
    • magazineArticle

      Malalison makes full circle: AQD writes finis to a community fishery resource management project 

      MB Surtida - SEAFDEC Asian Aquaculture, 1998 - Aquaculture Department, Southeast Asian Fisheries Development Center
    • Conference paper

      Malaysia: mangrove-friendly aquaculture 

      CP Sze & RSH Ahmad - In JH Primavera, LMB Garcia, MT Castaños & MB Surtida (Eds.), Mangrove-Friendly Aquaculture : Proceedings of the Workshop on Mangrove-Friendly Aquaculture organized by the SEAFDEC Aquaculture Department, January 11-15, 1999, Iloilo City, Philippines, 2000 - Southeast Asian Fisheries Development Center, Aquaculture Department
      The paper describes some mangrove-friendly aquaculture activities that are practiced in Malaysia. Among these are the culture of cockle and oyster, semi-intensive culture of tiger prawn, fish cage culture, and pen culture of mud crab. Policies, regulations, future directions and priority areas in research and development that can contribute to sustainable mangrove utilization are discussed.
    • Conference paper

      Malaysia: status of implementation of the resolution and plan of action on aquaculture. 

      IA Hassan, K Subramaniam & M Hashim - In BO Acosta, RM Coloso, EGT de Jesus-Ayson & JD Toledo (Eds.), Sustainable aquaculture development for food security in Southeast Asia towards 2020. Proceedings of the Regional Technical Consultation on Sustainable Aquaculture Development in Southeast Asia Towards 2020, 2011 - Aquaculture Department, Southeast Asian Fisheries Development Center
    • magazineArticle

      The Malaysian experience 

      ET Aldon - SEAFDEC Asian Aquaculture, 1997 - Aquaculture Department, Southeast Asian Fisheries Development Center
      Integrated farming has long been practiced in Malaysia, not only to provide protein requirements needed by the family, but also as a source of income. With fish being promoted on a larger scale, the Malaysian government is providing farmers with financial assistance and hands-on training on fish culture and rice production. Systems of fodder-fish integrated farming and fish-livestock farming in mine ponds are outlined.
    • magazineArticle

      Malaysian school engages in bullfrog and turtle farming 

      NJ Dagoon - SEAFDEC Asian Aquaculture, 2000 - Aquaculture Department, Southeast Asian Fisheries Development Center
      A brief description is given of the culture methods used in the Sepang Today Aquaculture Centre, a private aquafarming training school in Malaysia, regarding American bullfrog (Rana catesbeiana) and the soft-shelled turtle (Trionyx sinensis). Seed production, grow-out, marketing and future potential are discussed, referring to the school s training brochures for both culture methods.
    • Article

      Management of brackishwater pond for milkfish fingerling production in Sri Lanka 

      DD Baliao - Journal of Inland Fisheries, 1982 - Ministry of Fisheries and Aquatic Resources
      The author reviews the present methods of milkfish (Chanos chanos) fry collection and presents his observations and recommendations of improvement.
    • Book chapter

      Management of feeding aquaculture species 

      VR Alava - In OM Millamena, RM Coloso & FP Pascual (Eds.), Nutrition in Tropical Aquaculture: Essentials of fish nutrition, feeds, and feeding of tropical aquatic species, 2002 - Aquaculture Department, Southeast Asian Fisheries Development Center
      This chapter teaches the reader to: differentiate the different feeding strategies in pond culture; learn feeding management methods such as stock sampling and record keeping, calculating daily feed ration, choosing appropriate feed size, and methods of applying feeds; understand the impact of feeding management on water quality and environment and on the cultured animal’s growth, survival, and feed conversion ratio; and describe the different feeding schemes used to culture fishes (milkfish, tilapia, rabbitfish, bighead carp, native catfish, sea bass, orange-spotted grouper, and mangrove red snapper; and crustaceans (tiger shrimp and mud crab). Other species for aquaculture stock enhancement (donkey’s ear abalone, seahorses, window-pane oyster) are also discussed.
    • Conference paper

      Management of fish health in broodstock and larvae of milkfish, sea bass and grouper 

      CR Lavilla-Pitogo, AC Emata, MN Duray & JD Toledo - In K Main & C Rosenfeld (Eds.), Aquaculture health management strategies for marine fishes : proceedings of a workshop in Honolulu, Hawaii, October 9- 13, 1995, 1996 - The Oceanic Institute
      Historically, reports on the occurrence of disease problems in milkfish, seabass and grouper were mainly on the isolation and identification of etiological agents. Studies on the tolereance of fish to chemotherapeutants were also conducted. Various species of vibrios and gill-infesting parasites have been associated with diseases in all life stages of these fish. Presently, mortalities due to diseases of unknown etiology, environmental failure and nutritional or husbandry shortfalls affect successful fry production in the hatchery. Morphological deformities in hatchery-produced milkfish fry is a major problem to be solved. In seabass fry production, swim-bladder stress syndrome occasionally occurs and results in mass mortalities. In larval grouper culture, the problem of low survival is being addressed through improved husbandry and nutrition. For cage-held broodstock that naturally spawn in captivity, such as milkfish and grouper, the main problem is fouling of net enclosures in the cages. However, for fish that need hormonal manipulation to spawn, such as seabass and snapper, stressful handling procedures during sampling and hormone injection may lead to injuries and scale loss. The damaged areas become focal points for secondary bacterial infection. Future fish health management strategies in these fish should incorporate a holistic approach to include environmental monitoring, nutritional manipulation, immunostimulants and vaccine use, and biological control in addition to pathogen exclusion in the rearing system and the fish.
    • magazineArticle

      Management of mangrove areas 

      Southeast Asian Fisheries Development Center, Aquaculture Department - Aqua Farm News, 1995 - Aquaculture Department, Southeast Asian Fisheries Development Center
      The article discusses the management of mangrove areas in the Philippines to prevent further negative effects of mangrove depletion on the income of coastal fishers. The article suggests that the conversion of mangrove areas should be regulated by means of land lease.
    • Book

      Management of milkfish broodstock. 

      AC Emata, CL Marte & LMB Garcia - 1992 - Aquaculture Department, Southeast Asian Fisheries Development Center
      Series: Aquaculture extension manual / SEAFDEC Aquaculture Department; no. 20
      The manual on milkfish (Chanos chanos) broodstock management covers the following topics: reproductive biology; sources of broodstock; holding facilities for broodstock; feeding; determination of gonadal development; spawning and egg collection; transport of spawned eggs; determination of percent viable eggs; and determination of hatching rate.
    • Conference paper

      Management strategies for grow-out culture of mud crab 

      JG Genodepa - In ET Quinitio, FD Parado-Estepa & RM Coloso (Eds.), Philippines : In the forefront of the mud crab industry development : proceedings of the 1st National Mud Crab Congress, 16-18 November 2015, Iloilo City, Philippines, 2017 - Aquaculture Department, Southeast Asian Fisheries Development Center
      There is an increasing interest in mud crab farming because of the growing demand for mud crab in domestic and international markets. Different methods for rearing crabs in ponds, pens and cages have evolved through several years of research and experiences of farmers. Mud crabs are cultured in brackishwater earthen ponds and pens in mangroves. Fattening of lean crabs is also integrated with the grow-out culture system. Cannibalism is one of the major factors affecting the survival of crabs in growout ponds and pens. Hence, various strategies are recommended to reduce cannibalism such as stocking density of less than 2,000 crabs ha-1, provision of suitable shelters, sufficient quantity of natural food and formulated feeds that are evenly distributed in the pond or pen. Feeding rate used in the pen is adjusted to avoid excess feeds that can attract rats and other land animals that can damage the enclosures. Selective harvesting is normally practiced since mud crabs do not grow or get fattened at the same time even if they belong to the same batch.
    • Conference paper

      Managing 'sinirapan' Mistichthys luzonensis Smith in Lake Buhi, Camarines Sur: Insights from its biology and population dynamics. 

      VS Soliman & MFHA Sergio - 2001 - Aquaculture Department, Southeast Asian Fisheries Development Center; Philippine Council for Aquatic and Marine Research and Development; Bureau of Fisheries and Aquatic Resources
      The population dynamics and related aspects of the biology of 'sinarapan' Mistichthys luzonensis Smith, the world's smallest commercial fish, are used as basis in formulating management strategies for this goby in Lake Buhi, Camarines Sur. Mesh size limit (4.1mm) and catch limit, estimated through length-based analytic fishery methods, are proposed. Yield-per-recruit analysis using length-frequency data for 11 months provided the quantitative indices used in estimating fishing limits. Closed season for 'sinarapan' was established from temporal pattern of recruitment and the reproductive biology of the species. Much of the data on 'sinarapan' came from studies in Lake Manapao. To improve the recruitment success of 'sinarapan', a habitat enhancement scheme in Lake Buhi is hereby recommended.
    • magazineArticle

      Managing a fish hatchery with oxygen injection 

      Southeast Asian Fisheries Development Center, Aquaculture Department - Aqua Farm News, 1994 - Aquaculture Department, Southeast Asian Fisheries Development Center