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Length-frequency data, collected using beach seines, on the common silverbiddy Gerres oyena (Gerreidae) in Tarawa Lagoon, Kirbati (northern Gilberts Group), from September 1976 to October 1977 were analyzed using the Compleat ELEFAN software. This analysis and basic knowledge of the inshore-offshore migration patterns of this fish suggest that the data at hand, because they include only young fish, cannot be used to estimate growth and/or mortality.
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 seamounts of the Kingdom of Tonga, South Pacific.
The parameter L8 and K of the von Bertalanffy growth equation were estimated from length-frequency data of teh spangled emperor Lethrinus nebulosus (Fam. Lethrinidae) caught in the Central and Western Divisions, Fiji. These parameters are compared with values from Papua New Guinea and New Caledonia and also used to derive estimates of total, natural and fishing mortality.