The Effect of Possible Allometric Interactions in Human Hand Digit Lengths on Sexual Dimorphism of Digit Ratios

IF 1.7 4区医学 Q1 ANTHROPOLOGY

American Journal of Human Biology Pub Date : 2025-08-25 DOI:10.1002/ajhb.70126

Görel Aksoy, Barış Özener

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引用次数: 0

Abstract

Objectives

This study was conducted to determine whether possible allometries in hand digit lengths have an effect on the observed sexual dimorphism in digit ratios.

Methods

The lengths of four digits from the second to the fifth digits on the right and left hands of 500 adult participants (250 males, 250 females) were measured and six different ratios were calculated. ANCOVA and regression analyses were used to examine the allometry effect.

Results

The findings revealed that the sexual dimorphism that emerged in the right and left 2D:4D ratios was independent of the allometry effect. On the other hand, it was observed that the allometry effect emerged in the three digit ratios (right and left 2D:5D, left 3D:5D).

Conclusions

These results reveal that the allometry effect is not observed on the ratios calculated from the digits (2D and 4D) that are claimed to have formed under the influence of prenatal steroids, but it can be observed on the other digits.

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手部手指长度可能的异速相互作用对手指比例性别二态性的影响

目的本研究旨在确定手指长度的异速是否会对手指比例的两性二态性产生影响。方法对500名成年被试（男250人，女250人）的右手和左手第2 ~第5个手指的长度进行测量，计算6种不同比例。采用方差分析和回归分析检验异速生长效应。结果发现，两性二态性出现在左右二维：四维比中，与异速效应无关。另一方面，观察到三位数比例（左右2D:5D，左3D:5D）出现异速生长效应。结论在产前类固醇影响下形成的2D和4D手指的比值上没有观察到异速生长效应，但在其他手指上可以观察到异速生长效应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

American Journal of Human Biology 生物-生物学

CiteScore

4.80

自引率

13.80%

发文量

124

审稿时长

4-8 weeks

期刊介绍： The American Journal of Human Biology is the Official Journal of the Human Biology Association. The American Journal of Human Biology is a bimonthly, peer-reviewed, internationally circulated journal that publishes reports of original research, theoretical articles and timely reviews, and brief communications in the interdisciplinary field of human biology. As the official journal of the Human Biology Association, the Journal also publishes abstracts of research presented at its annual scientific meeting and book reviews relevant to the field. The Journal seeks scholarly manuscripts that address all aspects of human biology, health, and disease, particularly those that stress comparative, developmental, ecological, or evolutionary perspectives. The transdisciplinary areas covered in the Journal include, but are not limited to, epidemiology, genetic variation, population biology and demography, physiology, anatomy, nutrition, growth and aging, physical performance, physical activity and fitness, ecology, and evolution, along with their interactions. The Journal publishes basic, applied, and methodologically oriented research from all areas, including measurement, analytical techniques and strategies, and computer applications in human biology. Like many other biologically oriented disciplines, the field of human biology has undergone considerable growth and diversification in recent years, and the expansion of the aims and scope of the Journal is a reflection of this growth and membership diversification. The Journal is committed to prompt review, and priority publication is given to manuscripts with novel or timely findings, and to manuscripts of unusual interest.