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This selection of methods is based on lecture notes used at a FAO/DANIDA training course held in Mombasa, Kenya, in May-June 1980. The methods presented are: regression and correlation, estimation of growth parameters from length-frequency data, estimation of mortalities (total, natural, fishing mortality) and analysis of catch and effort data.
A computer program is presented which allows for fitting growth curves of the von Bertalanffy type to any set of weight- or length-at-age data. The data may be weighted by sample size, need not be spaced at regular intervals, and a forcing value for the asymptotic size may be used. The goodness of fit is estimated.
The working together of the Solomon Islands and Japan on tuna (Katsuwonus pelamis ) industrialization requires cooperation and mutual trust. This must be based on an understanding of history and everchanging socioeconomic climates, which may be obtained from case studies such as that currently being funded by ICLARM and the Rockefeller Foundation on the South Pacific tuna industrialization.