En el presente estudio se examinan las posibilidades de producción piscícola en los canales de riego. El examen se divide en las cuatro partes siguientes: aspectos de ingeniería de los sistemas de riego; factores que limitan la producción piscícola en los canales; malezas y hierbas acuáticas, y problemas que plantean en los canales de riego. La cría en jaulas en los canales de riego se expone mediante estudios sobre esta práctica en Indonesia, Egipto y Tailandia, mientras que para la cría en corrales se presenta un estudio en China.

Un des plus grands handicaps au développement de la pisciculture à Madagascar est l'absence de documents techniques de base en langues française et/ou malgache. En effet, la plupart des quelques documents techniques sur l'aquaculture disponibles en Afrique et Madagascar sont, de nos jours, en langue anglaise.

The first chapter gives a brief description of a pastoral production system, as envisaged by the study team and outlines the multi-disciplinary approach of the study, its sampling design and the data collected. Chapters 2 & 3 describe Kenya's biophysical and socio-economic environments, within which the Maasai livestock production system operates. The biophysical environment of the study site is described in detail in Chapter 4. Chapter 5 describes the social organization of the Maasai and how it affects their use of livestock and grazing resources.

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This document is prepared for fisheries biologists, managers and administrators concerned with lagoon fisheries and aquaculture. Our main objective is to draw attention to the need for greater understanding of relationships between the hydraulics and productivity of lagoon fish and shellfish. The fishery yields from lagoons vary widely, and, probably, predictably, once such relationships are understood. Furthermore, the productivities of many lagoons could probably be enhanced by hydraulic manipulations, but the hydraulic manipulation is presently risky, except in dystrophic lagoons.

This paper analyzes irrigation operational problems, and their institutional causes, on a new irrigation system in southern Sri Lanka, based on research during disastrous drought. The authors offer a number of suggestions for improving the management of this system.