【摘要】 分析从秘鲁外海采集的113尾茎柔鱼（Dosidicus gigas）眼睛晶体的微结构,并对其生长纹的周期性进行验证,结果显示:眼睛晶体由前后两个部分组成,直径最大处所处的平面为赤道面,记录了晶体中所有的生长纹,生长带周期性明显,每条生长带由明、暗相间的两条同心的生长纹组成。由晶体核心至边缘,相邻生长纹间隔逐渐变小,没有明显的过渡区。晶体平均直径为7 mm,且平均每天生长7条生长纹。通过配对样本t检验,发现眼睛晶体生长纹与耳石日龄之间有很大的差异性（P<0.05）。样本晶体生长纹A与晶体直径D呈指数关系(D=6.88e^{0.000 09A},n=113,R²=0.578 1),与胴长ML也呈指数关系(L_ML=216.25e^{0.000 2A},n=113,R²=0.463 2)。研究结果表明,茎柔鱼眼睛晶体生长纹不具有日周期性,但可将其作为个体生长分析的指标,为我国学者开展头足类年龄生长研究提供重要的基础文献。更多还原

【Abstract】 Based on 113 Dosidicus gigas specimens collected from the sea of Peru, the microstructure of eye lens is analyzed and the periodicity of the formation of growth increments is validated. Results shows that eye lens consists of two halves: the front and back. The plane with the largest diameter is the equatorial plane, records all growth increments of lens. Eye lens is composed of hood and crest, in which light-dark alternated concentric growth increments are distinct. From the core to the edge of the eye lens, the spacing between adjacent growth increments gradually decreased and there is no obvious transition zone.The average diameter of the eye lens is 7 mm, and the average daily growth of 7 increments. Through paired sample t test, it was found that there was a significant difference between the increments of eye lens and statolith-determined age（P<0.05）. The lens growth increments A of the sample showed an exponential relationship with the lens diameter D,(D=6.88 e^{0.000 09 A},n=113,R²=0.578 1) and also had an exponential relationship with the mantle length ML(L_ML= 216.25 e^{0.000 2A}, n=113, R²=0.463 2). Although the results of the study negate the possibility of a daily periodical pattern of lens increments of the D.gigas, it can be regarded as individual growth analysis indicators, at the same time and it provides important basic literature for Chinese scholars to study the age growth of cephalopods.更多还原