Estudo das capturas e revisão dos parâmetros de crescimento de quatro espécies de carapau e cavala, na pescaria de arrasto industrial de peixe, nos bancos de Sofala e de Boa-Paz, em 1992

Abstract

This work presents the study of the catches of the industrial fish trawl fleet and the review of growth parameters of four species of horse mackerel and mackerel in the Sofala and Boa-Paz banks. Based on the analysis carried out, the fleet's monthly catches varied throughout the year. The highest were registered in the months of August and January in the Sofala and Boa Paz banks respectively. Annual catches per boat showed variations. The biggest catches were registered in the Sofala bank. The total fleet catch estimated for 1992 (about 4786 tonnes) was lower than in previous years. D. russelli is the dominant species in the landings of the industrial fish trawl fleet. The size composition determined indicates that the frequency distribution varies by species and area. The values ​​of Lº and K presented are close to those previously calculated by SOUSA (1992) with the exception of K for D. russelli and S. crumenophtalmus in the Sofala bank. For the Boa Paz bank it can be considered that the values ​​of Lº and K are preliminary and need to be confirmed, since there are no previous estimates related to this fishing area. (TRADUÇÃO NOSSA)