Comparative study of Japanese eel and yellowfin goby brains using a new brain size index
Comparative study of Japanese eel and yellowfin goby brains using a new brain size index
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使用新的大脑尺寸指数对日本鳗鱼和黄鳍虾虎鱼大脑进行比较研究
DOI：
10.1007/s12562-022-01635-9
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Masanori Kono
中科院分区：
文献类型：
--
作者：
Shigeru Watanabe;Masanori Kono
我们提出了一个简单的脑体积指数(D*L指数)，该指数是使用从背侧切面捕捉的大脑二维照片计算的。这里，D和L分别代表图像中的背侧和侧方脑区。对两个远亲物种进行了评估。计算了11条日本鳗和11条黄鳍虎鱼的D*L指数。D*L指数与脑重的相关系数较高，表明该指数具有较高的信度和效度。使用该指数计算嗅球、端脑、视顶盖和小脑的相对轮廓。鳗鱼有较大的嗅球和端脑，而虎鱼有较大的视顶盖。主成分分析表明，鳗鱼和虎鱼有两个独立的聚类群。用已发表的两种鳗形目和四种戈壁虎科的图片来检验D*L指数。主成分分析结果表明，蜻蜓形目和戈壁虎科物种具有不同的聚类群。D*L指数简单、成本低、具有信度和效度，是一种适合于数据收集的工具。
We propose a simple index of brain volume (D*L index), calculated using two-dimensional photographs of the brain, captured from the dorsal and lateral views. Here, D and L represent the dorsal and lateral brain areas in the images, respectively. Two distantly related species were assessed. The D*L indices of 11 Japanese eels,Anguilla japonicaand 11 yellowfin gobies,Acanthogobius flavimanuswere calculated. High correlation coefficients of D*L index with brain weights were obtained from both species, suggesting the validity and reliability of the index. The relative profiles of the olfactory bulb, telencephalon, optic tectum, and cerebellum were calculated using this index. Eels had a larger olfactory bulb and telencephalon, whereas gobies had a larger optic tectum. Principal component analysis showed two separate clusters for eels and gobies. Published images of two Anguilliformes species and four Gobiidae species were used to test the D*L index. Principal component analysis showed separate clusters for Anguilliformes and Gobiidae species. The D*L index is a suitable tool for data collection because it is simple, low-cost, and has reliability and validity.