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耳石重量在年龄组间重叠较少 ,大小相近的个体 ,年龄大的 ,即生长慢的耳石重量比年龄小的、即生长快的大 ,不同龄组之间耳石重量有显著差异 (P <0 .0 5 )。按年龄组以耳石重量与相应的体长作图 ,可初步判断观测年龄的可靠性 ,分析耳石重量频率分布能分离出体长相近、年龄不同的个体 ,其结果与耳石年轮观测的基本一致。耳石重量与年龄呈显著线性正相关 (P <0 .0 5 ) ,用耳石重量与年龄关系估算的年龄与从耳石上直接读取的年龄无显著差异 (P>0 .0 5 )。文中对耳石重量直接用于确定鱼类年龄的可能性作了分析和探讨。
Otolith weight less overlap among age groups, individuals of similar size, older, that is, slow growth of otolith weight less than age, that is, the growth of fast, different age groups were significantly different weight of otolith ( P <0. 05). By age group with the otolith weight and the corresponding body length mapping can be initially judged the reliability of the observation age, analysis of otolith weight frequency distribution can be isolated similar length and age of individuals, the results of the otolith ring observation Basically the same. There was a significant linear positive correlation between otolith weight and age (P <0.05). There was no significant difference between the age of otolith weight and age and the age of otolith (P> 0.05). In this paper, the possibility of determining the age of otolith directly by the weight of otolith is analyzed and discussed.