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茎柔鱼是大洋性重要经济头足类,分布范围广泛,种群结构复杂。本文根据2008年5月～2009年10月对智利、秘鲁2个海区采集的茎柔鱼生物学样本,利用胴宽、鳍长、触腕长等11个外部形态指标与胴长之比,分析东南太平洋茎柔鱼种群结构组成及其差异,并建立相应的判别函数。研究认为,采集的渔获物样本中,初步可分为大型和小型2个种群。2个海区间大型群和小型群的外部形态特征差异显著,2个海区利用外部形态特征对种群判别正确率均在60%以上。研究认为,研究认为,外部形态特征可作为划分茎柔鱼种群结构的有效方法之一。
Solefish is an important marine economy, cephalopods, a wide range of distribution, the population structure is complex. Based on the biological samples collected from two marine areas of Chile and Peru from May 2008 to October 2009, the ratio of body length to body length of 11 stems, including body width, length of fin and length of wrist, was analyzed Southeastern Pacific Solentarium population structure and its differences, and to establish the corresponding discriminant function. The study suggests that the collected samples of catches can be divided into two types: large and small. There were significant differences in the external morphological characteristics between the large and small groups in the two sea areas. The accuracy of the population discrimination using two or more external morphological features was above 60% in both sea areas. The study suggests that the study suggests that the external morphological characteristics can be used as one of the effective methods for the classification of Squidfish population structure.