Universidade Estadual do Maranhão - UEMA, Programa de Pós-graduação Conservação e Ecologia da Biodiversidade, São Luís, MA, Brasil.
Universidade Estadual do Maranhão - UEMA, Laboratório de Biologia Pesqueira, São Luís, MA, Brasil.
Braz J Biol. 2024 Feb 26;84:e279163. doi: 10.1590/1519-6984.279163. eCollection 2024.
The main objective of this study was to evaluate the biometric relationships between the species Bagre bagre, Lutjanus synagris and Nebris microps and their otoliths. The relationship between the size of the otolith (length and weight) and the size of the fish (standard length and total weight) was determined using the linear regression model (y = a + bx). For the morphological description, the otoliths of three specimens were selected by standard length class (10mm). The morphological characters analyzed were chosen according to traditional literature. Three hundred eight specimens of B. bagre, 200 of L. synagris and 237 of N. microps were analyzed. Throughout the collection period, the source of the capture of individuals was the municipality of Raposa. The linear correlations for fish and otolith length for B. bagre were 0.9129 and 0.9652, respectively. For L. synagris, the coefficients were 0.8634 and 0.8672, while for N. microps, 0.9597 and 0.8636, respectively. The morphological classification of L. synagris and N. microps is of the Saggita type, and the B. bagre species is of the Lapillus type. From the data presented here, it is possible to observe that otolith morphometric and morphological data can serve as a parameter to estimate the relationship between the fish and the otolith in terms of its biomass and the length of an individual and a population.
本研究的主要目的是评估巴格雷鲷、黄鳍鲷和小眼鲷的种间耳石的生物计量关系及其耳石。使用线性回归模型（y = a + bx）确定耳石大小（长度和重量）与鱼体大小（标准长度和总重量）之间的关系。为了进行形态描述，根据标准长度类别（10mm）选择了三个样本的耳石。所分析的形态特征是根据传统文献选择的。分析了 308 个 B. bagre、200 个 L. synagris 和 237 个 N. microps 样本。在整个采集期间，个体的捕获来源是 Raposa 市。B. bagre 的鱼体和耳石长度的线性相关系数分别为 0.9129 和 0.9652。对于 L. synagris，系数分别为 0.8634 和 0.8672，而对于 N. microps，系数分别为 0.9597 和 0.8636。L. synagris 和 N. microps 的形态分类属于 Sagitta 型，而 B. bagre 物种属于 Lapillus 型。从这里呈现的数据可以看出，耳石形态计量和形态数据可以作为估计鱼体与其耳石之间生物量和个体长度关系的参数，以及种群。
