Trends in cultivation management after the decline of prawn production in brackishwater aquaculture in the Philippines

摘要

Currently, the fishing industry of the Philippines accounts for 4 % of GDP and 5 % of the total employment population in the country. Philippine fisheries can be divided into three sectors: municipal fisheries, commercial fisheries and aquaculture. In2000, the production volume was composed of aquaculture (34.1%), commercial fisheries (33.0%) and municipal fisheries (32.9%). In particular, brackishwater aquaculture is widely practiced, and has a long history and is based on highly traditional techniques. The major species in brackishwater aquaculture are milkfish (Chanos chanos) and black tiger prawn (Penaeus monodon).