Browsing SEAFDEC/AQD Publications in Print and for Sale by Title
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Book
Abalone hatchery
- 2008 - Aquaculture Department, Southeast Asian Fisheries Development Center
Series: Aquaculture extension manual; No. 39This manual contains information on abalone hatchery operation, including site selection, design, culture of natural food, broodstock management, spawning, nursery, packing and transport, and profitability analyses. -
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An assessment of the coastal resources of Ibajay and Tangalan, Aklan: Implications for management
- 2001 - Aquaculture Department, Southeast Asian Fisheries Development CenterThis report describes the present state of marine resources in several coastal barangays of Ibajay and Tangalan, Aklan (Philippines). Field data were obtained from rapid surveys conducted from July to September 1998. Recommendations based on analyses of the data will guide fisherfolk and other stakeholders, particularly the local government units, in their development plans for these neighboring municipalities. Both land and marine products in the area are mainly harvested for the local market. All coastal barangays are dependent on fishing for their livelihood. The medium-scale municipal fishery of Tangalan employs several passive (encircling gill net, bag net, fish corral) and active gears (baby purse seine) compared with the traditional fishing methods employed by Ibajay fishers. Pond aquaculture in mangrove areas is well-developed in Ibajay West (barangays Aquino and Ondoy) and in Tangalan. However, ownership of these ponds is limited to a few individuals and families, unlike in Barangay Bugtong Bato where informal ownership distributed among families has been the traditional rule. Nonetheless, the introduction of so-called environment-friendly methods of utilizing mangroves (e.g., aquasilviculture) and other shared coastal resources may seriously undermine the informal rights-based social structures in the barangays. Without proper rules and enforcement, the application of these methods may be misused, aggravating the already poor overall state of their coastal resources. Major problems affecting their fishing livelihood include siltation of nearshore waters due to illegal deforestation upland, encroachment of municipal fishing grounds by commercial and other fishers elsewhere, and the lack of capital to finance the fishery. Weak inter-organizational links among government and non-government organizations have hampered the implementation of solutions to these common problems in coastal barangays. For instance, a conflict between fishers from these neighboring municipalities over territorial boundaries of common fishing grounds in Pangayawan and Pungtod reefs has not been resolved over the years. Likewise, the introduction of aquasilviculture in mangrove areas may become a potent source of conflict among resource-users who maintain informal rights over the mangrove resource. The overall state of coastal resources in these municipalities is in immediate need of a unified plan to promote both their preservation and conservation. To achieve this end, a joint resource management council representing all resource-users from both municipalities must be organized and convened. To address the presently weak inter-organizational links among existing organizations, this joint council may provide a legitimate forum to identify, resolve, integrate, implement, and enforce guidelines on the common use of resources, both marine and inland. Low estimated yields from the reef fishery, conversion of mangroves for aquaculture beyond the allowable limit, a persistent conflict over fishing rights in several reefs offshore, the limited resources for seaweed and fish mariculture, and threats on existing traditional social structures by progressive resource-users are several issues that require thorough discussions to formulate popularly approved and acceptable management strategies. These strategies include community-based approaches of co-managing resources such as "no-take zones" (sanctuaries), ecotourism development, and livelihood schemes to mitigate, in part, the pressure of over-exploitation of fishery resources. -
Book
Best management practices for a mangrove-friendly shrimp farming
- 2002 - Aquaculture Department, Southeast Asian Fisheries Development Center; Association of Southeast Asian Nations
Series: Aquaculture extension manual; No. 35This 50-page manual puts together the best practices that SEAFDEC/AQD has developed with the Department of Fisheries in Thailand. These practices include the use of biomanipulators and greenwater system, the use of settling ponds with baffles and biofilters, the use of sludge collectors among others. These practices have been field-tested in Thailand, the Philippines, Myanmar and Viet Nam. -
Book
Biology and hatchery of mangrove crabs Scylla spp.
- 2018 - Aquaculture Department, Southeast Asian Fisheries Development Center
Series: Aquaculture extension manual; No. 34This manual includes the biology of crab (Scylla serrata, S. tranquebarica, and S. olivacea), and describes principles and procedures for spawning the mature crabs and rearing the zoea to ‘fly’ size crabs. It focuses on the hatchery rearing of S. serrata as the farming of this species is more economically viable than the two other species. The techniques may be modified depending on the conditions or problems encountered in a specific site. -
Book
Biology and hatchery of mud crabs Scylla spp.
- 2008 - Aquaculture Department, Southeast Asian Fisheries Development Center
Series: Aquaculture extension manual; No. 34This manual includes the biology of mud crab, and describes principles and procedures for spawning the mature crabs (Scylla serrata, S. tranquebarica, and S. olivacea) and rearing the zoea to fly size crabs. It focuses on the hatchery rearing of S. serrata as this species is more economically viable than the two other species. The techniques may be modified depending on the conditions or problems encountered in a specific site. -
Book
Breeding and seed production of the Asian catfish Clarias macrocephalus (Gunther)
- 2008 - Aquaculture Department, Southeast Asian Fisheries Development Center
Series: Aquaculture extension manual; No. 40Among the topics discussed in this 28-page manual are broodstock development and management, hatchery and nursery, health management and financial analyses of the breeding and seed production of the Asian catfish. This manual was published to disseminate science-based aquaculture technologies developed by AQD to assist catfish nursery and hatchery growers in producing high-quality fingerlings. Researchers in the field of fisheries, students and teachers could benefit from the information on the breeding and seed production of this important aquaculture commodity. -
Book
Breeding and seed production of the giant freshwater prawn (Macrobrachium rosenbergii)
- 2011 - Aquaculture Department, Southeast Asian Fisheries Development Center
Series: Aquaculture extension manual; No. 52An extension manual describing biology, broodstock management, hatchery and nursery operations, feeding management, packing and transport, and health management of the giant freshwater prawn. -
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Cage culture of the giant freshwater prawn (Macrobrachium rosenbergii)
- 2011 - Aquaculture Department, Southeast Asian Fisheries Development Center
Series: Aquaculture extension manual; No. 50An extension manual describing biology, site requirement, grow-out operations, health management, harvest, post harvest handling and processing, and economic analysis. -
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Cage nursery of high-value fishes in brackishwater ponds: seabass, grouper, snapper, pompano
- 2012 - Aquaculture Department, Southeast Asian Fisheries Development Center
Series: Aquaculture extension manual; No. 54This extension manual describes nursery pond requirements, nursery rearing procedures, common diseases of young marine fish, and economic analysis of cage nursery as an enterprise separate from hatchery and grow-out culture. -
Book
Culture of marine phytoplankton for aquaculture seed production
- 2013 - Aquaculture Department, Southeast Asian Fisheries Development Center
Series: Aquaculture extension manual; No. 55The 32-page extension manual describes the biology, culture techniques and maintenance and mass propagation of 12 phytoplankton species used as live feed in marine hatcheries. -
Book
Culture of rotifer (Brachionus rotundiformis) and brackishwater cladoceran (Diphanosoma celebensis) for aquaculture seed production
- 2015 - Aquaculture Department, Southeast Asian Fisheries Development Center
Series: Aquaculture extension manual; No. 60A 32-page manual with topics on the biology and cultivation techniques of zooplankton. -
Book
Development and management of milkfish broodstock
- 2015 - Aquaculture Department, Southeast Asian Fisheries Development Center
Series: Aquaculture extension manual; No. 62The manual provides developed and refined techniques for collection and transport of spawned eggs and larvae, as well as larval rearing. It also describes the necessary facilities for maintaining milkfish broodstock. Guidelines on transporting broodstock, performing biopsy to determine sex of spawners, collecting and cleaning eggs, packing and transporting eggs to hatchery, incubating and hatching eggs, and packing and transporting of larvae are also provided in the manual. The importance of nutritional quality of the diet in relation to the performance of the milkfish broodstock and quality of resulting eggs and larvae is also explained in the manual. Broodstock feeds are enriched with vitamin C, beta-carotene, and other nutrients for better reproductive performance of broodstock and better egg and larval quality. It also offers formula to initially estimate the number of spawned eggs and determine the hatching rate. The manual guides stakeholders and operators who are interested in setting up breeding facilities for milkfish. -
Book
Diseases of juvenile and adult mud crab Scylla spp. in the Philippines
- 2017 - Aquaculture Department, Southeast Asian Fisheries Development Center
Series: Aquaculture extension manual; No. 64This manual aims to provide updated information on the diseases of mud crabs initially authored by Lavilla-Pitogo and dela Peña (2004). It includes the name of the disease, causative agent, stages affected, effects on mud crab and methods of prevention and control. Except for the infectious diseases caused by viruses, which can be detected through molecular methods, most of the diseases can be visually diagnosed. Photographs of the external and internal anatomy of a normal mud crab, including the different sexes and species are included to help readers differentiate a normal from a diseased mud crab. -
Book
The farming of the seaweed Kappaphycus
- 2000 - Aquaculture Department, Southeast Asian Fisheries Development Center
Series: Aquaculture extension manual; No. 32A 24-page manual that introduces the carrageenan-producing seaweed Kappaphycus whose culture has spread from Jolo in Mindanao to at least 14 sites in the Visayas and Luzon. Four culture methods are presented: fixed off-bottom, raft long-line (single or multiple), hanging long line, and polyculture of seaweeds with carnivorous fishes. -
Book
Farming of the tropical abalone Haliotis asinina
- 2010 - Aquaculture Department, Southeast Asian Fisheries Development Center
Series: Aquaculture extension manual; No. 49This manual was written to provide abalone growers a practical guide on how to culture abalone based on the studies and trials conducted by SEAFDEC Aquaculture Department. -
Book
Field guide to mangrove identification and community structure analysis
- 2013 - Aquaculture Department, Southeast Asian Fisheries Development CenterThe mangrove field guide is a 32-page field guide with a one page introduction on mangroves, followed by a key to mangrove genera and species (with colored pictures of the whole plant and plant parts), then a definition of important terms used in the key, species code for use during mangrove community structure, instructions on how to conduct mangrove community structure analysis plus the formulas for the different indices (relative density, dominance, frequency; importance value and species diversity) and a sample data sheet. The guide, measuring 9 cm x 14 cm, is printed on PVC material hence it can get wet, soaked or be left in the water for days. -
Book
Fingerling production of hatchery-reared milkfish (Chanos chanos) in earthen nursery ponds
- 2010 - Aquaculture Department, Southeast Asian Fisheries Development Center
Series: Aquaculture extension manual No. 45Fingerling production of milkfish in ponds maybe operated as a commercial enterprise or a component of milkfish farming that comprises nursery, transition and rearing or grow-out phases. The fishpond nursery is used to grow milkfish fry to fingerlings 1-3 g in weight or 1-2 inches in length. The nursery pond is the smallest of the major fishpond compartment ranging from 500 to 5,000 m2, and is about 10% of the total farming area. The pond is prepared with utmost care to eliminate predators and competitors. The area should have good topography, is free from flooding and should have soil with good water retention properties for good dike construction and efficient culture management. Water supply should be adequate year-round and free from pollutants. Good pond water quality is maintained and natural food should be adequate to enhance growth and survival. With high stocking densities, supplemental feed is also provided. The three types of nurseries are based on feed sources: lablab, plankton with supplemental feeding and direct feeding. Select hatchery-reared fry (21 day old) that swim actively in schools, are uniform in size, have robust body, and are resistant to handling and transport stress. The ideal fry stocking density is 5-40 pieces/m2. Survival ranging from 50-90% can be expected after 25-45 days of rearing. Harvest, packing, transport, acclimation and stocking of the fry or fingerlings are carefully done during the cooler part of the day. Economic indicators show that fingerlings production is a profitable business. The improvement of milkfish grow-out technology from extensive or traditional to modified-extensive, semi-intensive and intensive culture in ponds, pens or in sea cages has increased demand for good quality fingerlings. Mass production of hatchery-reared fingerlings in earthen nursery ponds during peak season of fry availability can help bridge the supply gap. A steady supply of fingerlings for a whole year s operation will further increase production and ensure a sustainable supply of affordable market-sized fish. -
Book
Grow-out culture of mangrove red snapper (Lutjanus argentimaculatus Forsskal, 1775) in ponds
- 2012 - Aquaculture Department, Southeast Asian Fisheries Development Center
Series: Aquaculture extension manual; No. 53The mangrove red snapper is among the high-value marine fishes with great potential for export. Snapper is important to coastal fishery and ideal for aquaculture particularly in Southeast Asia. Grow-out culture of snapper are described - pond culture and culture in cages inside the ponds. In the pond culture, the whole area can be maximized and the available natural food can be utilized by snapper. In rearing snapper in cages inside the pond, fish sampling and harvesting are easily done and also in preventing of disease infection and securing of fish stocks during flooding. In both culture methods a good site would have a mangrove buffer space about 20-100 m that lies between the ponds and the source of water like river or sea. Pond soil with a good water retention property is desirable for dike construction. Water supply should be adequate year-round, free from pollutants and run-off flooding. Pond supplies, labor and technology should be available on the selected site which is also accessible to markets with peaceful locale. The pond for growing snapper should be prepared well in order to promote good growth of fish, to minimize pollution, and prevents the proliferation of pathogens. Stocking of healthy and larger uniform size juveniles will mean higher survival, faster growth and shorter culture period. Proper handling of juveniles during harvest, size-grading, counting, packing, transport, acclimation and stocking should be observed and should be done during the cooler part of the day. Recommended juveniles for grow-out is about 20-100 g average body weight (ABW) and stocking densities of 5,000/ha in ponds, and at 5 pcs/m3 or 5,000 pcs/ha when stocked in cages inside the pond. During culture, good water quality is maintained and when necessary the cleaning of net cages, repair of dike leaks and seepages, and aeration are to be considered. Snapper dietary protein is about 48-50%. The following are the factors to consider in the feeding management of snapper: total stock (pcs), survival (%), ABW (g), feed rate (% biomass), feed type, feed size, feeding frequency and time. Economic analysis based on 0.422 ha pond shows that feeds accounted for 60-67% and juveniles contribute 23-25% of the variable cost. The feed conversion ratios, return on investments, payback period and discounted benefit-cost ratios are 2.5 and 2.6; 203 and 43%; 0.46 and 1.76 yr; 1.4 and 1.2 for culture of snapper in pond and culture in cages inside the pond, respectively, are likewise acceptable. -
Book
Grow-out culture of the Asian catfish Clarias macrocephalus (Gunther)
- 2008 - Aquaculture Department, Southeast Asian Fisheries Development Center
Series: Aquaculture extension manual; No. 41Asian catfish Clarias macrocephalus is an esteemed food fish especially in Southeast Asia due to its tender and delicious meat. This commodity constitutes a valuable fishery for small-scale fishers in the region and has a great potential for aquaculture. The important considerations in the grow-out culture of catfish are reliable water supply, soil with good compaction properties for dike construction, supply of fingerlings, feeds, labor, pond supplies and technology assistance. The farm must also be accessible by road, near to market facilities and has a peaceful environment. Rearing catfish in ponds is the most popular and commonly practiced. The pen culture is a system fully enclosed by nets on all sides but utilizes the dug-out pond, dam or lake bed as bottom enclosure. Tanks in abandoned old hatcheries with freshwater source can be used for catfish culture. In the cage culture system the stock is fully enclosed by nylon nets on all sides and bottom similar to an inverted mosquito net installed in suitable areas like reservoirs, dams, lakes and dug-out ponds. The rice-fish (catfish) culture is also practiced where the rice pond canals are utilized to retain water at 1-2 m depth to provide shelter to the fish while the rice plot maintains 10-20 cm water depth. For the stock, select fingerlings that are active, healthy and uniform in size. Handling of fish stock is important to avoid mortality due to stress during harvest, sorting, counting and transport. Furthermore, stocking of fish is recommended during the cooler part of the day. Catfish fingerlings stocking density is about 5 to 20 pcs/m2 depending on the water supply and support facilities of the farm. The catfish, C. macrocephalus, requires a substantial amount of dietary protein for growth. For this species a formulated diet with crude protein (CP) of 34%, moist diet (trash fish or blanched chicken entrails plus rice bran or cooked broken rice), and a combination of pellet feeds (50%) and moist diet (50%) have been tested and acceptable for the grow-out culture. Economic evaluation based on a grow-out culture in pond with an area of 1,000 m2 showed that feeds and fingerlings are the major variable costs. The net income, return on investments and payback period, respectively range from PhP22,972-PhP35,741, 80-122% and 0.8-1.2 years when using pellet, moist feed or a combination of these feeds. Feeding using formulated diet has an advantage of convenience, quality and quantity over moist diet which has issues such as inconsistent supply, storage requirement and fouling the rearing water. -
Book
Handbook of mangroves in the Philippines - Panay
- 2004 - Aquaculture Department, Southeast Asian Fisheries Development CenterA 106-page guide is a user-friendly presentation of technical botanical description and illustrations of Philippine mangrove species in Panay Island, Guimaras and Aurora Province. Vegetative and reproductive structures of 34 mangrove species that are readily observed in the field are emphasized and presented in color photographs and as graphic icons. Also discussed: importance of mangroves; mangrove decline and legislation; conservation and rehabilitation; and mangrove-friendly aquaculture.