闽江口及附近海域棘头梅童鱼的生物学特征

利用2006年至2007年4个季度月的底拖网调查数据,初步分析了闽江口及附近海域底拖网渔获物中棘头梅童鱼的生物学特性.结果表明：1）棘头梅童鱼体长与体重的关系式为：W=1.2284×10-5L3.1023（R2=0.9730,n=736）;体长、体重生长方程分别为：Lt=183.751-e-0.60（t＋0.27）],Wt=125.901-e-0.60（t＋0.27）]3.1023.2）优势体长组为100～120mm;优势体重组有两个,分别为0～5g和25～30g,体重生长拐点为1.62龄.3）性腺分化和性成熟时间在冬季、春季,摄食强度在春季、夏季较强.

Biological Characteristics of Collichthys lucidus in Minjiang River Estuary and Its Adjacent Waters

In this paper,based on bottom-trawling fisheries survey data in four seasons from 2006 to 2007,the biological characteristics of Collichthys lucidus in Minjiang River estuary and adjacent waters in the bottom trawl were analyzed. The results showed that： 1） the length and weight relationship of Collichthys lucidus was： W = 1. 228 4 × 10-5 L3.1023（R2 = 0. 973 0,n = 736） ; the growth equations of body length and body weight were respectively： Lt = 183. 751-e-0.60（t＋0.27）],Wt = 125. 901-e-0.60（t-＋0.27）]3.102 3 . 2） edge body length group was 100 ～ 120 mm; and edge weight group had two,0 ～ 5 g and 25 ～ 30 g,respectively. 3） gonad differentiation and sexual maturation period were in winter and spring,and feed in spring and summer was relative apparent. In spring and winter,the proportions of Collichthys lucidus to the total fish quantity were high,but low in summer and autumn.