based on the work of
J.M. Kapetsky (FAO Senior Fishery Resources Officer)
M.M.J. Vincke (FAO Senior Aquaculturist)
FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
Rome, 1990
1 Background
The recommendation for this investigation has been given in Field Technical Report 1.
Before a rational management programme can be designed, it is necessary to gather information that can be used to make an economic and social evaluation of the benefits and costs. The objective of this analysis is to define the contribution to food security, income and employment that can be expected from dam and dugout fisheries. In order to underpin this evaluation, the following kinds of analyses have to be made based on existing FD records from dams and dugouts in the UE, NO, VO and UW:
Using the same data, but by plotting them over time, it should be possible to devise a fishing strategy to maximize benefits.
In addition, the stocking records of dams and dugouts should be compiled. By a limited amount of field sampling of those in which non-indigenous species were introduced most recently, the success of the stocking programme should be evaluated.
2 Activities
Assemble and examine the historical data on dams and dugouts in the Fisheries Department regional and headquarters archives to identify the water bodies that have been stocked and the chronology of the species and numbers supplied. Also, document and analyze the findings of any follow-up sampling at these dams and dugouts that would be indicative of the outcome of the stockings.
If necessary, follow up on the current survey of dams and dugouts to include all of the districts not presently reporting. The objective of this part of the survey has been to estimate the total numbers of dams and dugouts in each district of each region and their locations and surface areas.
If necessary, expand the 20 % coverage by questionnaire of dams and dugouts in each district of each region. The main objectives of this part of the study are to determine if there is fishing, by whom, when and the disposal of the catch. Also, it is important to establish what species are present and which are preferred. In cases where the dam or dugout is not permanent, it is of the utmost importance to know if it is self-replenishing, or devoid of fishes.
The results of this study can be used to better define where stocking should take place, the species of fishes required and the quantities. In turn, this information can be used to specify the fish culture requirements in terms of pond area, production and delivery rates, personnel, equipment and transportation. Some thought should be given to the possibility that, if stocking is successful, it should become self-financing for the Department and eventually be passed to the private sector. This could be done in connection with the development of fish farming in irrigation areas.
Furthermore, the same results can be used to better plan the development and management of fishing on dams and dugouts that are already being fished and where there would be no conflict with the water supply function.
3 Outputs
This investigation will provide the basic information required to design a CBF project. The information it generates can be put to immediate use for the management and development of CBF.
4 Inputs
The investigation requires one senior fishery officer full time for two months, a 4WD vehicle for one month and the use of a micro-computer for two months.
