The commercial exploitation of giant clam Tridacnidae in the Philippines is examined. Generally the giant clam shell is of greater commercial value than the meat and muscle. Prices and expert figures are discussed briefly.
Aquatic agricultural systems (AAS) are systems in which the annual production dynamics of freshwater and/or coastal ecosystems contribute significantly to total household income.
Following a brief description of lake-based hatcheries and nurseries for tilapias, the advantages as compared to land-based systems are discussed, indicating also some of the disadvantages.
Since 1974, Sumilon, a 23-ha island near the southeastern tip of Cebu, Philippines, has been managed by Silliman University as a natural reserve in cooperation with the municipality of Oslob, Cebu. The use of the island as a marine park pilot site has been made possible through the Marine Parks Development Program within the Ministry of Natural Resources. This articles gives an account of this pilot project.
The fishing industry in the Philippines was tantamount to a marine capture fishery in the 1950s to 1960s. Aquaculture and inland fishery production were not significant. Only during the 1970s did aquaculture and inland capture fisheries contribute significantly to fish production. From 250 000 t fish production in 1951, this increased substantially to 1.6 million t in the 1990s. An average 4.3% was contributed by fisheries to the gross domestic product from 1988 - 98. Fisheries export earnings reached P12 billion in the 1990s.
An historical account of the establishment of the Silliman University Marine Laboratory is given in this article.
A brief account of the USAID funded fish stock assessment collaborative Research Support Program is given, with emphasis on its Philippine module, devoted to empirical analyses, modelling and field studies aimed at improved management of exploited multispecies fish stocks.
A brief account of rice fish culture in the Ifugao Province, northern Luzon, Philippines was presented.
In response to inland fisheries demands for more manageable species of fish, development agencies in the Philippines have turned some attention to common carp (Cyprinus carpio) and its culture in rice paddies. Tilapia, which have been used exten-sively in rice fields, require more management than carp. With the advent of integrated fish farming and agriculture
The development of a saline tolerant tilapia strain able to grow fast is of importance in the Philippines, where 240 000 ha of brackish water ponds are available. To this end, founder hybridization between Oreochromis niloticus (with favorable growth traits) and O. mossambicus (with favorable salinity tolerance traits) was performed and followed by backcrossing with O. mossambicus to develop a strain highly tolerant to saline environments. Genetic selection for growth performance was subsequently conducted.