Martinez-Leiva Lorena, Landeira José M, Fatira Effrosyni, Díaz-Pérez Javier, Hernández-León Santiago, Roo Javier, Tuset Víctor M
Unidad Asociada ULPGC-CSIC, Instituto de Oceanografía y Cambio Global (IOCAG), Universidad de Las Palmas de Gran Canaria, 35214 Telde, Canary Islands, Spain.
Instituto Universitario ECOAQUA, Universidad de Las Palmas de Gran Canaria, 35214 Telde, Canary Islands, Spain.
Animals (Basel). 2023 Jan 21;13(3):370. doi: 10.3390/ani13030370.
The fish body shape is a key factor that influences multiple traits such as swimming, foraging, mating, migrations, and predator avoidance. The present study describes the body morphological changes and the growth trajectories during the transformation from 24 to 54 days post-hatching in the golden grey mullet, , using geometric morphometric analysis (GMA). The results revealed a decrease in morphological variability (i.e., morphological disparity) with the somatic growth. The main changes affected head size, elongation, and widening of the body. Given that this variability could affect the metabolism, some individuals with different morphologies and in different ontogenetic developmental stages were selected to estimate their potential respiration rate using the Electron Transport System (ETS) analysis. Differences were detected depending on the developmental stage, and being significantly smaller after 54 days post-hatching. Finally, a multivariate linear regression indicated that the specific ETS activity was partially related to the fish length and body shape. Thus, our findings emphasized the relevance of larval morphological variability for understanding the physiological processes that occur during the development.
鱼的体型是影响多种性状的关键因素，如游泳、觅食、交配、洄游和躲避捕食者等。本研究利用几何形态测量分析（GMA）描述了金鲻鱼从孵化后24天到54天转变过程中的身体形态变化和生长轨迹。结果显示，随着体细胞生长，形态变异性（即形态差异）降低。主要变化影响头部大小、身体的伸长和变宽。鉴于这种变异性可能影响新陈代谢，选择了一些具有不同形态和处于不同个体发育阶段的个体，使用电子传递系统（ETS）分析来估计它们的潜在呼吸速率。根据发育阶段检测到了差异，孵化后54天之后差异显著减小。最后，多元线性回归表明，特定的ETS活性与鱼的长度和体型部分相关。因此，我们的研究结果强调了幼体形态变异性对于理解发育过程中发生的生理过程的相关性。
