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University of Stirling
Institute of Aquaculture
Stirling
FK9 4LA
UK

The considerable quantities and value of edible aquatic plants cultivated in SE Asian cities is not measured or included in annual FAO statistics for aquaculture production. This is despite creating income and employment for a significant number of peri-urban households, in many cases recycling and treating urban waste water, whilst also producing a green and nutritious foodstuff which is consumed on a daily basis by millions of urban dwellers in these cities. This manual is an output from the EC funded Papussa (Production in Aquatic Peri-urban Systems in SE Asia) project and was conceived and put together after finding there was little if any technical support or information for the many existing aquatic plant growers or those who might wish to begin cultivating them on a commercial basis.

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Author: Nhu Van Can

Effects of different diets on growth and quality of rotifer of the L-strain were investigated in this study. Rotifers were cultured in triplicate in 200 l tanks with water maintained at 20 ppt, and fed four different diets: (1) bakers’ yeast (Saccharomyces cerevisiae) in wet form plus 10% squid liver oil (by dry weight), (2) S. cerevisiae in dry form plus 10% squid liver oil, (3) microalgae Nannochloropsis oculata and (4) microalgae Chaetoceros muelleri. The results showed that there were significant differences in rotifer growth rate, viability, size and ciliate contamination between the four dietary treatments (P < 0.05). Rotifers fed on microalgae showed better viability, larger size and low ciliate contamination compared to those fed on yeast. However, no differences in the protein and lipid contents of rotifers were evident. In fact, higher density and production of rotifers were found with the use of yeast, but there was a problem in controlling the ciliate contamination and maintaining the cultures.

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This study was conducted in Dai Tu district of Thai Nguyen province during November 2001 -January 2003 to assess the aquaculture development potential for watershed ponds by integrating socio-economic and environmental data into GIS database, detecting land use
change, and identifying and estimating potential areas for aquaculture development in watershed ponds.

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Advanced DHA, EPA and ArA enrichment materials for marine aquaculture using single cell heterotrophs

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An enzyme linked immunosorbent assay for the detection of Kudoa thyrsites in Atlantic salmon Salmo salar

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Anti-luminous Vibrio factors associated with the 'green water' grow-out culture of the tiger shrimp Penaeus monodon