剑尖枪乌贼为东海重要经济枪乌贼资源之一，研究其产卵群体的组成、年龄与生长规律是了解其生活史的基础。实验根据2017年和2018年的9月至翌年3月拖网采集的东海剑尖枪乌贼样本，通过耳石日龄信息研究其群体组成及其生长规律的性别及年间差异。结果发现，胴长和体质量组成年间存在差异，而性别间差异不显著。通过读取耳石日龄进行逆推算发现，2年优势日龄组均为190~220 d，雄性日龄组成存在年间差异，逆推算结果显示，孵化高峰期为3—5月和8月，春、夏产卵群体为优势群体。春季产卵群体的胴长和体质量生长以Logistic曲线拟合最佳，夏季产卵群体分别以von-Bertalanffy和Logistic曲线拟合最佳。在180~270 d内，春季产卵群体的胴长和体质量生长速率快于夏季产卵群体，240 d后雄性个体的胴长生长速率快于雌性，而体质量生长速率慢于雌性。春季产卵群体的初次性成熟日龄小于夏季产卵群体，并且雄性个体的初次性成熟日龄小于雌性。研究表明，不同年份存在不同产卵群体，且不同性别间的生长规律存在差异。
The Uroteuthis edulis is one of the important economic squid resources in the East China Sea. Studying the composition, age, and growth pattern of population is the basis for understanding its life history. Based on the samples of the East China Sea U. edulis collected by the trawl nets from September to March of 2017 and 2018, this study used the age information of statoliths to study the sex and year differences in population structure and growth patterns. The results showed that there were differences in population mantle length and body weight composition between years, but there was no significant difference between genders. It was found by reading the age of statoliths and performing backward calculation that the two-year dominant age group was 190-220 d, and there were significant differences in age composition of male during the year. The backward calculation results showed that the peak hatching period was from March to May and August. The spring and summer stocks are the dominant hatching groups. The mantle length and body weight growth of the spring stock were best fitted with a Logistic curve, and the summer stock were best fitted with a von-Bertalanffy and a Logistic curve. In 180-270 d, the mantle length and body weight growth rate of spring stock was faster than that of summer stock. After 240 d, the male mantle growth rate was faster than that of female, and the body weight growth rate was slower than that of female. The age of the 50% maturity of the spring stock is younger than that of the summer stock, and the male is younger than the female. The results showed that different spawning populations existed in two years, and the growth pattern also had difference between sexes. Therefore, this study can provide a scientific basis for comprehensive understanding of the life history characteristics of the U. edulis.