The von Bertalanffy growth parameters (L8 and K) were estimated, based on length-frequency data from the small scale fishery, and the Compleat ELEFAN software, for short wing flying fish Oxyphorhampus micropterus (Hemiramphidae) in the Bohol Sea, central Philippines. Related estimates (Z, M, F,...

A model for describing the seasonally oscillating growth of fish is presented and compared with the commonly used model of D. Pauly and G. Gaschutz (PG). The new model produces results similar to those obtained from teh PG model, except for teh parameter t <subscript>o</subscript) which the new model estimates accurately, such that L <subscript>t</subscrpt>=0 when t = t<subscript>0</subscript>.

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.

A novel method was used to estimate natural mortality (M) of Kuwaiti Penaeus semisulcatus using tagging data. The new M estimator is based on two tagging experiments with similar products of initial survival after tagging times reporting rate, but with different total mortality (Z) values. The...

Plots of Rn, the goodness-of-fit index of teh ELEFAN I program versus K can be used jointly with fixed values of the other growth parameters to identify "optimum values" of K. This is here illustrated using data on wahoo (Acanthocybium solandri, Fam. Scombridae) from St. Lucia, West India.

An application of an algorithm presented by J. Gregor in 1969 for decomposition of a mixture distribution into Gaussian components is presented here in relation to discrete mixture distributions of constant class interval. This graphical separation called Modified Gregor method (MG) uses the...