Fractal morphology of mechanosensory lateral-line canals in Stichaeidae

IF 1.1 4区 生物学 Q4 ANATOMY & MORPHOLOGY Zoomorphology Pub Date : 2024-07-11 DOI:10.1007/s00435-024-00674-3
Todd R. Clardy
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Abstract

The marine teleost family Stichaeidae shows considerable variation in the morphology of mechanosensory lateral-line canals across its six subfamilies, 38 genera, and 82 species. Some species have reduced cephalic canals and no trunk canals, others have a full cephalic canal system and a single trunk canal that extends the length of the body, and others have complex, branched cephalic canals and multiple trunk canals with branching. In this study, fractal techniques are used to quantify the complexity of lateral-line systems of 21 species of Stichaeidae, representing all six subfamilies and the full range of mechanosensory system configurations within the family. The fractal dimension, D, ranged from 0.9769 in Bryozoichthys lysimus, which has reduced cephalic canals and lacks trunk canals, to 1.5704 in Phytichthys chirus, which has a complex cephalic canal network and multiple, complexly branching trunk canals. Species with more complex cephalic and trunk canals had higher values of D. The error associated with repeatedly measuring the same individual multiple times was consistently low, suggesting that fractal analyses is an accurate and precise method for quantifying the complexity of mechanosensory lateral-line canals. Such information may benefit studies of mechanosensory system evolution and function.

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魟科机械感觉侧线管的分形形态
海洋长尾鳕科(Stichaeidae)的 6 个亚科、38 个属和 82 个物种的机械感觉侧线管形态差异很大。有些物种的头管缩小,没有躯干管;有些物种的头管系统完整,只有一条躯干管延伸至体长;有些物种的头管复杂,有分支,躯干管有多条分支。本研究采用分形技术量化了21种刺肢蜓科鱼类的侧线系统复杂性,这些鱼类代表了该科所有六个亚科和所有机械感觉系统配置。分形维数 D 的范围从 Bryozoichthys lysimus 的 0.9769 到 Phytichthys chirus 的 1.5704 不等,Bryozoichthys lysimus 的头管较小且缺乏躯干管,而 Phytichthys chirus 则具有复杂的头管网络和多条复杂分支的躯干管。对同一个体进行多次重复测量的误差始终很低,这表明分形分析是量化机械感觉侧线管复杂性的一种准确而精确的方法。这些信息可能有助于对机械感觉系统的进化和功能进行研究。
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来源期刊
Zoomorphology
Zoomorphology 生物-动物学
CiteScore
2.20
自引率
10.00%
发文量
31
审稿时长
>12 weeks
期刊介绍: The journal publishes original research papers, reviews and method papers. While reviews should be designed as comparative surveys, summarizing the current knowledge from an evolutionary perspective, method papers should present new approaches or reviews on methods used in animal morphology. The research papers should be based on morphological investigation of invertebrates and vertebrates at the macroscopic, microscopic and ultrastructural level, including embryological studies.
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