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本文根据青石斑鱼仔、稚鱼形态变化划分为前仔鱼期、后仔鱼期、稚鱼期、幼鱼期。背、腹棘的显著伸长是石斑鱼形态发育过程中的一个典型特征。背棘、腹棘长短与仔鱼全长有明显关系。背棘和腹棘比值近似1:1。仔稚鱼全长和体重两者呈幂函数相关。在整个仔、稚、幼鱼日龄生长中可分为三个阶段,第一阶段为15日龄前的仔鱼阶段,第二阶段为40日龄前的仔稚鱼阶段,第三阶段为60日龄前的稚幼鱼阶段。各生长阶段均伴随着一个危险期。导致各危险期的主要原因是(1)饵料,(2)变态,(3)自残。对策是(1)确保适时、适口饵料供应,(2)防止水质恶化和饵料营养缺乏,(3)勤分苗和充分投饵。在生长发育中,石斑鱼个体大小差异显著,导致此现象出现是因先天性和后天性二个方面造成。
Based on the changes of the morphology of juvenile green grouper and juvenile, the paper classified the juveniles as larvae, larvae, juveniles and juveniles. Significant extension of the dorsal and abdominal spines is a typical feature of grouper’s morphological development. Dorsal spinous process, abdomen spine length and larval length have a clear relationship. Dorsal spinous and abdominal thorn ratio of approximately 1: 1. The length of juvenile fish and weight are power function related. In the whole child, juvenile, juvenile day-old growth can be divided into three stages, the first stage for the larvae before the age of 15 days, the second stage for larvae before 40 days of age, the third stage of 60 The juvenile fish stage before day age. Each stage of growth is accompanied by a dangerous period. The main reasons leading to the various dangerous period (1) food, (2) metamorphosis, (3) self-mutilation. Countermeasures (1) to ensure timely supply of palatable food, (2) to prevent deterioration of water quality and lack of food nutrition, (3) seedlings and seedlings fully feeding. In the growth and development, grouper individual size differences significantly, resulting in this phenomenon is due to congenital and acquired two aspects caused.