在Crotalus durissus LINNAEUS的头部内部,1758(蛇类,蝰蛇科,Crotalinae):大脑的宏观描述与个体发生的见解。

4区 医学 Q2 Agricultural and Biological Sciences
Anatomical Record Pub Date : 2025-04-16 DOI:10.1002/ar.25672
Giordanna Issa Lucas, Angele Martins
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引用次数: 0

摘要

近年来,在计算机断层扫描成像技术的推动下,脊椎动物的神经解剖学研究获得了极大的关注。尽管如此,这些进展仍然主要局限于特定的脊椎动物群体,特别是哺乳动物,鸟类和鱼类,使爬行动物的研究处于初级阶段。在这项工作中,我们的目标是详细描述四个年轻个体和四个成年个体(三个雄性和五个雌性标本)的Crotalus durissus大脑的宏观形态,为爬行动物提供了相对适度的大脑样本的第一个详细描述。本研究结果表明,C. durissus的主要宏观特征表明其具有多栖息地和导管/夜间alethinophhidian物种的典型大脑结构,从而为了解蛇的大脑形态进化提供了重要的数据。脑测量结果显示出与鼻口长度和头长相关的明显的缩放模式,脑长度和大脑半球长度等变量随着SVL的增加而减少,而嗅球长度和延髓宽度等其他变量则增加。在幼鱼和成鱼的比较中观察到其他差异,成鱼通常表现出更大的小脑和延髓测量平均值。然而,小样本量强调了未来研究需要更大的数据集来验证这些发现并更详细地探索发育轨迹。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Inside the head of Crotalus durissus LINNAEUS, 1758 (Serpentes, Viperidae, Crotalinae): Macroscopic description of the brain with ontogenetic insights.

Neuroanatomy studies in vertebrates have garnered significant attention in recent years, particularly driven by advancements in computerized tomography imaging techniques. Nonetheless, these advancements remain largely constrained to specific vertebrate groups, notably mammals, birds, and fish, leaving studies in reptiles at an incipient stage. In this work, we aim to describe in detail the macroscopic morphology of the brain of Crotalus durissus based on a sample of four young and four adult individuals-three male and five female specimens, providing the first detailed description of the brain with a relatively modest sample available for reptiles. Our results show that the major macroscopic features identified in C. durissus suggest a brain structure typical of a multi-habitat and cathemeral/nocturnal alethinophidian species, thereby contributing significant data to the understanding of brain morphological evolution in snakes. Brain measurements showed distinct scaling patterns related to snout-vent length and head length, with variables such as brain length and cerebral hemisphere length decreasing with SVL, while others like olfactory bulb length and medulla oblongata width increased. Additional differences were observed comparing juveniles and adults, with adults generally exhibiting larger mean values for cerebellum and medulla oblongata measurements. However, the small sample size highlights the need for future studies with larger datasets to validate these findings and explore the developmental trajectories in greater detail.

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来源期刊
Anatomical Record
Anatomical Record Agricultural and Biological Sciences-Ecology, Evolution, Behavior and Systematics
CiteScore
4.30
自引率
0.00%
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0
期刊介绍: The Anatomical Record
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