Population parameters of the Atlantic bumper catching by beach seine at Jacqueville (Côte d’Ivoire)

Abstract

Chloroscombrus chrysurus’ length distribution was recorded from the Côte d’Ivoire continental shelf, from January to December 2021. ELEFAN I program was used to analyze the data. The biggest specimens are characterizing by 22 centimeters (Fork length) and 121 grams (weight) respectively. The von Bertalanffy growth function are characterized by: L∞ = 22.25 centimeter; K = 0.47 per year and to = -0.36 year. Based on the catch curve converted to length, the estimated value of the instantaneous total mortality rate, Z, was 1.24 per years. Fishing and natural mortality calculated were respectively 0.98 per years and 0.21 per year. Jacqueville's Chloroscombrus chrysurus species are overexploited. To preserve the exceptional Atlantic stock in the continental unit of Côte d'Ivoire, certain management measures must be implemented.