Abstract—

Allometric power equations are generated using otolith length and width in order to estimate the total length of five demersal species inhabiting the San Matias Gulf, the second largest gulf in Argentina. The selected fish species are economically important resources in Argentina and have been identified as prey for the system’s main predators. A total of 2795 specimens were sampled, and data were fitted using the nonlinear least squares analysis. It is shown that the length and width of the otolith are good predictors of the total fish length. A slightly better regression fit is observed when otolith length was considered as a predictor. Statistically significant morphometric differences in regression models were observed between sexes, except for Acanthistius patachonicus. Results are discussed and compared with those reported by other authors.

中文翻译：

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阿根廷北巴塔哥尼亚主要水下资源的耳石与鱼类大小之间的生物统计学关系

摘要—

使用耳石的长度和宽度生成异向功率方程，以估计居住在阿根廷第二大海湾圣马蒂亚斯海湾的五个沉没物种的总长度。选定的鱼类是阿根廷的重要经济资源，已被确定为该系统主要捕食者的猎物。总共采样了2795个样本，并使用非线性最小二乘法进行数据拟合。结果表明，耳石的长度和宽度可以很好地预测鱼的总长度。当耳石长度被认为是预测因素时，观察到稍微更好的回归拟合。在回归模型中观察到了统计学上显着的形态学差异，这两个性别之间都存在差异，除了棘金线虫。对结果进行了讨论，并与其他作者报告的结果进行了比较。