ANÁLISE POPULACIONAL DO PEIXE–ESPADA, Trichirus lepturus (PERCIFORMES;TRICHIURIDAE), NO ESTUÁRIO DO RIO CAETÉ, COSTA NORTE DO BRASIL

Gleydson Cordovil, Mauricio Camargo

Abstract


This study describes frequency distribution of the total length and estimates the weight-length relation of Trichiurus lepturus in the estuary of the Caeté River, northeastern Brazil. These population parameters were compared among four areas along the latitudinal gradient of the South American coast. Samples were gathered in the estuarine area of the Caeté River from October 1996 to August 1997. The total length of T. lepturus at the River varied between 27-81 cm, with a mode at 57 cm. No significant differences were detected among the four stocks. Different stock responses to environmental factors such as food availability, local seasonality and variations among years might probably explain these findings.

Keywords


<i>Trichiurus lepturus</i>; Freqüência de comprimento; Relação peso-comprimento; Litoral norte do Brasil; Length frequency; Weight-length relationship; Northeastern coast of Brazil



DOI: https://doi.org/10.31420/uakari.v3i1.24