The Biological Characteristics of Scomber Japonicas in Coastal Waters of West Africa
ZHU Qingcheng
ZHANG Yandong
CHEN Bingjian
WANG Xiaojie
and JIN Xin
Abstract：The biological characteristics of common mackerel were analyzed by the data collected in Coastal waters of West Africa from September to October in 2013.The results showed that the samples had total body lengths from 13.5 cm to 29.1cm,the dominant body lengths varied between 19.5cm and 25.5cm.The fork lengths varied from13.9cm to 30.7cm with the dominant fork lengths from 21.5cm to 25.5cm which occupied 76.09 percent of total catches.The body weights varied from 33g to 551g and the dominant body weights from 120g to 210g.The relationships between fork lengths and body weights fitted by the power exponential function was W=0.407L1.879 R2=0.538.It is found that the sexual maturity at Ⅱ and Ⅲ of the gonad were dominated which take up 81.71 percent of the total. Grade 2 and 3 of the feeding grade were dominated for September to October in 2013.The monthly dis-tributions of fork lengths,body weights and the maturities of gonad had a significant differences be-tween Sep.and Oct.by ANOVA (P<0.05).
Keywords：common mackerelbiological characteristicsWest Africa Coastal
Publication Date：2014-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 31-36 )