Proceedings of the Seminar-Workshop on Aquaculture Development in Southeast Asia, Iloilo City, Philippines, 26-28 July, 1994 http://hdl.handle.net/10862/110 2026-04-07T14:09:04Z 2026-04-07T14:09:04Z http://hdl.handle.net/10862/2166 2020-06-10T07:48:41Z 1995-01-01T00:00:00Z

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 Bagarinao, Teodora, U.; Flores, Efren Ed C. Documents the presentations at ADSEA '94, the 3rd Seminar-Workshop on Aquaculture Development in Southeast Asia. ADSEA '94 includes reviews of the status of aquaculture development in Southeast Asia and Japan and of the researches conducted by Southeast Asian Fisheries Development Center, Aquaculture Department (SEAFDEC/AQD) to contribute to this development. Topics on responsible aquaculture, mollusc and seaweed culture, integrated farming, shrimp culture, diseases, and health management, and transgenic fish were also discussed. It also lists the research areas of 20 or so commodities prioritized for research at AQD for 1995-1997.

1995-01-01T00:00:00Z Flores, Efren Ed C. Bagarinao, Teodora http://hdl.handle.net/10862/121 2020-06-10T07:49:06Z 1995-01-01T00:00:00Z

The SEAFDEC Aquaculture Department at 21: R&D for sustainable aquaculture Flores, Efren Ed C.; Bagarinao, Teodora Bagarinao, Teodora, U.; Flores, Efren Ed C. This paper reviews the research output of the SEAFDEC Aquaculture Department (AQD) over the past 21 years of its existence. These realized studies are compared with the priority problem areas recommended for research by international or regional seminar-workshops convened by AQD in 1983, 1987, 1991 and 1994. Between 1976 and 1994, AQD researchers produced 554 publications, including 274 in journals indexed by the Institute for Scientific Information, 122 in other journals, and 158 in conference proceedings. Another 82 publications from work done outside AQD were authored or co-authored by AQD researchers, mostly during their graduate programs. In addition, AQD published 21 extension manuals and 14 technical reports and monographs by AQD researchers, and co-published two other monographs by non-AQD researchers. AQD's major contributions have been the technologies for tiger shrimp seed production, grow-out culture, feeds, and disease control; milkfish seed production and feeds; rabbitfish seed production; and tilapia feeds and strain selection. Communication and two-way feedback among AQD researchers and representatives of the aquaculture industry and the SEAFDEC Member Countries must be improved to fine-tune AQD research. In the late 1980s, AQD started redirecting some of its research towards environmental problems in aquaculture. Much of the near future will be spent implementing research imperatives in sustainable and responsible aquaculture.

1995-01-01T00:00:00Z Csavas, I. http://hdl.handle.net/10862/111 2020-06-10T07:47:53Z 1995-01-01T00:00:00Z

Recommendations for responsible aquaculture Csavas, I. Bagarinao, Teodora, U.; Flores, Efren Ed C. Aquaculture has grown rapidly in Asia. In 1992, out of the 52.8 million tons of total production of aquatic organisms, as much as 17 million tons (32.2%) came from aquaculture. However, unplanned and uncontrolled development of aquaculture has led occasionally to environmental damage and social disruption in many countries. Now attention has focused on the sustainability of aquaculture. Negative impacts of shrimp culture have been well publicized, but problems have also been caused by overinvestments in fish and mollusk culture. As sustainability is a highly complex issue, it is important to develop internationally accepted principles and guidelines for responsible aquaculture, with the use of technologies not detrimental to natural resources, ecosystems and human communities. FAO is now in the process of developing an International Code of Conduct for Responsible Fishing based on the Declaration of Cancun. One chapter of the Code will deal with aquaculture. Unfortunately, information is rather scanty on the environmental impacts of various aquaculture systems and the carrying capacity of aquatic ecosystems, especially in tropical areas. Therefore, research on these topics should receive high priority. Similarly, tightening and enforcing the rules and regulationsgoverning existing and new aquaculture ventures is a pressing task that responsible government agencies can not postpone any longer.

1995-01-01T00:00:00Z Hurtado-Ponce, Anicia Q. http://hdl.handle.net/10862/118 2022-04-21T10:00:43Z 1995-01-01T00:00:00Z

Research on seaweeds and mollusks Hurtado-Ponce, Anicia Q. Bagarinao, Teodora, U.; Flores, Efren Ed C. Research on seaweeds focused on the carrageenan-producing Kappaphycus alvarezii and the agar-producing Gracilaria spp. Growth of K. alvarezii was better on horizontal lines than on vertical or cluster lines from bamboo rafts. All morphotypes (brown green, and red) grew faster at 50 cm than at 100 cm below the water surface, but the green morphotype showed better carrageenan properties. A socioeconomic survey of K. alvarezii farming in Panagatan Cays, Antique revealed that a farmer has an average annual production of 3 tons/ha (dry) with the fixed bottom and hanging longline methods. Three species of Gracilaria in natural beds in lloilo showed monthly variations in biomass and agar quality; G. heteroclada had the highest biomass and gel strength. When this species was grown in tanks, growth and agar sulfate content were influenced by the interaction of light, salinity, and nutrients. Enriched and unenriched stocks of G. heteroclada differed in agar quality. When G. heteroclada was grown with the tiger shrimp Penaeus monodon in extensive ponds, the highest growth rate and production were obtained at the seaweed stocking density of 250 g/m2; this was in November when average water temperature, transparency, and salinity were low. Salinity tolerance varies among Gracilaria species.Oyster (Crassostrea iredalei) and mussel (Perna viridis) farming in Western Visayas were assessed in 1992 in terms of the culture methods, socioeconomics, marketing, and profitability. A more localized survey of oyster and mussel fanning was conducted through rapid rural appraisal in two coastal towns in 1993. A farmer-participatory study followed in 1994 for the culture of oysters, mussels, seaweeds, and rabbitfishes in a river mouth in Dumangas, lloilo. Green mussel, brown mussel (Modiolus metcalfei), and seaweeds transplanted to Dumangas from Capiz have reproduced. In another study, the green mussel was tested as a biological filter in tiger shrimp ponds; shrimps stocked with mussels grew better than those without. A nationwide survey on the Placuna placenta fishery in 1993 showed 27 remaining 'kapis' beds; many others have been depleted due to excessive gathering, pollution, siltation, and trawling. Broodstocks are being developed to produce 'kapis' seed for grow-out and restocking. For the first time at AQD, adult donkey-ear abalone Haliotis asinina from the wild spawned naturally in laboratory tanks. Juvenile abalones can be successfully grown on Gracilaria or abalone diet.

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