A global experiment on tilapia aquaculture: impacts of the Pond Dynamics/Aquaculture CRSP in Rwanda, Honduras, Philippines and Thailand.

The Pond Dynamics/Aquaculture Collaborative Research Support Program (PDA/CRSP) is a global research network to generate basic science that may be used to advance aquaculture development. One of a family of research programs funded by the United States Agency for International Development (USAID), the CRSP focuses on improving the efficiency of aquaculture systems. The PDA/CRSP began work in 1982 in Thailand, and subsequently in the Philippines, Honduras, the US and, until recently, Rwanda.

Feasibility of adopting aquaculture without detriment to existing farming practices: a case of Bangladesh farming systems

Integrating agriculture aquaculture that would draw inputs from on farm sources is viewed as a viable option to improve the productivity, income and resource use efficiency of existing farms in Bangladesh. To assess the existing resource availability, use pattern and efficiency before introducing new aquaculture technology within the existing farm systems, a survey of 330 pond operating farm households was conducted in six selected unions from two thanas (subdistricts) of Bangladesh.

An epizootic of infectious hepatopancreatic and lymphoid organ necrosis disease in cultured Penaeus monodon: a case study.

Shrimp disease of viral origin have caused large production losses worldwide. This paper presents a case study of shrimp (Penaeus monodon; Penaeus indicus) epizootic disease, covering an area of 1,050 ha in Andhra Pradesh, India. The disease struck shrimp farms in the area in July 1994. Samples from 26 shrimp farms were studied in the laboratory, and the pattern of the disease and of mortality recorded. The disease was classified as infectious hepatopancreatic and lymphoid organ necrosis disease (IHLN).

Enhancing benefits from polycultures including tilapia (Oreochromis niloticus) within integrated pond-dike systems: a participatory trial with households of varying socio-economic level in rural and peri-urban areas of Bangladesh

Linkages between the fish ponds and surrounding land for horticulture are a distinctive feature of farming households in Bangladesh. It was hypothesised that integration of fish ponds in integrated farming system enhances livelihoods and reduces poverty. The effects of introducing tilapia into existing integrated farming systems on the broader pond-dike system and associated livelihoods in rural and peri-urban settlements in central north (Mymensingh District) of Bangladesh were evaluated.

Effect of stocking size and nutrient inputs on productivity of Oreochromis shiranus in ponds

A study to investigate the effects of three different stocking sizes (5, 10, 20 g) and two isonitrogenous input regimes (maize bran x urea and napier grass x urea) on the production of Oreochromis shiranus was conducted between June and November 2000 at the Malawi National Aquaculture Center. Six treatments (three stocking sizes x two input regimes), each in triplicate, were used in the study.

Effect of pond supplemented with chicken manure on bacterial build up and its antimicrobial resistance, besides the quality and shelf-life of cultured Nile tilapia (Oreochromis niloticus)

Twelve thousand fries of Nile Tilapia (<i>Oreochromas niloticus</i>) were stocked in 6 ponds, three ponds were supplemented with chicken-manure and others with artificial diet. The Aeromonas. and <i>Pseudomonas spps.</i> were isolated from all ponds while the <i>Salmonella</i> and <i>Enterococcus spps.</i> were isolated from the manure supplemented ponds. As a General observation, the antimicrobial resistance of the isolated bacteria was high with oxytetracyclin, low with ciprofloxacin.

Development of sustainable aquaculture project: progress report (1 July 2001 - 30 Sept 2001)

The Development of Sustainable Aquaculture Project (DSAP) was authorized by USAID. This report covers activities for the three months of the project, 1 June 2001 through 30 September 2001. The main thrust of the DSAP is to sponsor on-farm aquaculture production demonstrations implemented through co-operating NGO partners. These demonstrations are expected to show farmers and their neighbors the profitability of managed aquaculture systems as small business operations.

Culture of mola (Amblypharyngodon mola) in polyculture with carps: experience from a field trial in Bangladesh.

Studies were carried out during May 1997 to January 1998 in Kishoregani district in Bangladesh to investigate the production potential of carp polyculture in combination with Amblypharyngodon mola in seasonal ponds. The preliminary results indicate that A. mola can be successfully cultured in small seasonal ponds in polyculture with carp. This practice can result in an increase in the households' consumption of small fish which have a very high content of calcium, iron and vitamin A.

Comparison of African tilapia partial harvesting systems

Three typical African partial harvesting systems and an unfished control were compared for gross yield. Fish grew undisturbed on an input regime based on that used by Malawian smallholding farmers for 122 days. Then, for an additional 143 days, ponds were partially harvested once per week by hook and line, seining with a reed fence or basket trapping. Hook and line fishing and seining with a reed fence partially harvested a significantly (P0.05) greater weight of fish than did trapping. Gross yield was significantly (P0.05) higher in ponds partially harvested by hook and line.

Building fish enclosure in Lake Nasser

This document is part of a series of 5 technical manuals produced by the Challenge Program Project CP34 “Improved fisheries productivity and management in tropical reservoirs”. This manual is based on the experience gained by the partners of the project “Improved Fisheries Productivity and Management in Tropical Reservoirs” (CP34) funded by the Challenge Program on Water and Food. As part of this project, the partners designed, developed and tested in the field three enclosures in Lake Nasser in Egypt.

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