This manual, which focuses on pond and rice field ecosystems, is in two parts. Part 1 provides background information for trainers of farmers on using the theory of participatory action learning (PAL), provides a PAL sessionsheet format and gives recommendations for using PAL sessions. A selection of 14 ponds and 4 rice field fish culture PAL session plans is contained in part 2. This manual includes two types of PAL sessions: those which need facilitation only once, and those which farmers can use repeatedly as a diagnostic tool.
A narration of the collaborative work between ICLARM fish farming / culture program in Bangladesh with the Bangladesh Fisheries Research Institute on potential use of seasonal ponds as small scale fish ponds. The ponds could be used to increase fish production in Bangladesh up to 80%. The women could manage the fish culture and in the process of doing so, contribute to household income, provide employment and improve family nutrition.
A study was carried out to estimate pond-water availability for fish culture by developing and applying a simulation model that can express water budget for fish ponds based on prevailing climatic and hydrological conditions. The model was applied at selected meteorological stations in the floodplains of the Ganges-Brahmaputra delta in Bangladesh from 1998 to 2002.
This manual describes the technologies developed for Milkfish seed production, grow-out and processing in the Philippines.
Ponds are traditional multipurpose resources accessed by households and communities, and are increasingly beingprioritised for aquaculture. High consumption of aquatic animals and declines in natural stocks has stimulated fish culture based on both stocked and natural seed across a broad spectrum of intensification. Management of a high proportion of ponds remains sub~optimal with respect to fish production because of conflicting uses, multiple ownership, and poor access to markets and information.
In this study a field investigation was done by collection of water and Nile tilapia (Oreochromis niloticus) from Helwan (branch of Nile River), El- Abbassa earthen ponds and Bahr El-Baqar fish ponds every 4 months during the year to determine the residues of phenol in fish and water. Also experimental laboratory studies were done by using apparently healthy Nile tilapia for determination of LC50 for 72hr. to phenol and evaluate the effect of long term exposure to phenol 1/10 LC50 for 12 weeks. The levels of phenol in water samples from Helwan were higher than in Bahr-El-Baqar.
Highlights activities of the project in assessing the socioeconomic impact of extending fish culture techniques to rural households and communities in Bangladesh.
The climate, land and water resources of Cameroon, combined with the high demand for fisheries products, makes this Central African country a high potential area for aquaculture. Fingerling availability and quality have been identified as key constraints which hold the sector back from rapid expansion. Nile tilapia (Oreochromis niloticus) and sharptooth catfish (Clarias gariepinus) are the two most widely cultured species and are often grown in polyculture. Some 32 government hatcheries have been built, but few are functional and none operates at full capacity.
This book is a collection of refereed papers on a controversial subject in agricultural development. Arguing that sustainability of fish culture in ponds needs a new paradigm - feed the pond to grow fish - two chapters focus on nutrient cycling in such systems. Another chapter makes the case for breeding Nile tilapia for resource poor farmers and presents practical options to avoid the pitfalls that arise from natural tilapia mating in low-input ponds.
A realistic alternative to traditional technology development and transfer has been utilized by the WorldFish Center to integrate pond fish culture into farming systems in Malawi and Cameroon. Participatory rural appraisal tools are used to assess farm resources and constraints and introduce the basic concepts of aquaculture.