大连地区方氏云鳚的年龄和生长

AGE AND GROWTH OF enedRIAS fangI in DALIAN

本文以耳石为材料研究了大连地区方氏云鳚的年龄,以Von Bertallanffy生长方程描述了其生长。对年龄鉴定材料的选择及鳞片上年轮的特征进行了讨论,提出了合理利用资源的建议。

This paper deals with the age and growth of Enedrias fangi. The specimen were collected from September, 1985 to-June, 1987 in Dalian. The otoliths are used for age determination and scales are used to prove the age. The time of annulus formation chiefly occurs from January to March. The. age groups are composed of I to IV ages.The length-weight relationship is shown as w = 1.596 × 10-8L3.1791. The relationship between body length and otolith radius is expressed as L = 26.83 + 3.62R. The growth of Enedrias fangi corresponds 'to Von Bertalanffy's growth equation, the results are as follows: Lt = 180.8[1 - e-0.3203(t+1.436)]Wt=16.95[1-e-0.517(t+0.66)]3The selection of the materials which used for age determination has been discussed. A suggestion is given to the rational use of the juvenile.