根据在东南太平洋的探捕调查 ,对所渔获的智利竹鱼 (Trachurus murphyi)群体的构成、叉长与体重的关系 ,年龄与生长的关系和性腺发育等基本生物学特征进行了初步探讨。结果显示 ,渔获智利竹鱼的叉长范围为 1 45～ 61 0 mm,体重范围为 42～ 1 95 0 g,年龄组成为 2～ 1 3龄 ,3～ 4龄鱼为优势群体 ,初次性成熟年龄为 3龄 ,不同年龄个体性腺成熟的节律差异明显 Based on the investigation of the southeastern Pacific, the basic biological characteristics of trachurus murphyi population, the relationship between fork length and body weight, the relationship between age and growth, and gonadal development were preliminarily discussed . The results showed that the length of fork-caught Chilean mackerel was from 1 45 to 61 0 mm, the body weight ranged from 42 to 1 95 0 g, the age group consisted of 2 to 13 years old, and the 3 to 4-year-old fish were the dominant group. Sexual maturity age of 3 years, different age individuals gonadal maturity rhythm difference significantly