Discounted cash flow techniques, as typically employed in the evaluation of fishery projects, employ constant cost and revenue streams over the duration of the project. The implicit assumption is that additional effort in the fishery does not adversely affect costs and yields. This assumption is...

Very preliminary bioeconomic assessments are reported in respect to fishery situation in Kenya. In the case of the shrimp fishery, it is concluded that the contemporary trawler fleet is substantially in excess of that required to maximise fishery profits. The second situation concerns the...

The parameters a and b of length-weight relationship of the form W = aLêb were computed for 122 species from graphs presented in R.van der Elst's "Guide to the Common Sea Fishes of Southern Africa".

The recent transition, in Italy, to an improved sampling scheme for fisheries catch and effort data, is described, with emphasis on the interactions between civil servants and fisheries scientists and on specific features of Italian fishery resources and research that may be common with those of...

This paper presents a tentative estimate of the parameters L8 and K of the von Bertalanffy growth function, and an estimate of total mortality derived from the analysis, using the ELEFAN I and II programs, of length-frequency data on the snapper Etelis carbunculus (Lutjanidae) collected on...

Growth, total mortality and seasonality of recruitment of male Metapenaeus ensis (Penaeidae) were determined based on length-frequency data (n = 9007) collected in 1988 in the Gulf of Papua, Papua New Guinea.