Sexual dimorphism in the mountain dragon, Diploderma micangshanensis (Squamata: Lacertilia: Agamidae) from central China

IF 1.4 4区生物学 Q2 ZOOLOGY

Animal Biology Pub Date : 2022-06-08 DOI:10.1163/15707563-bja10085

J. Xiong, Yinlong Bai, Guanglu Li, Z. You

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引用次数: 2

Abstract

Sexual dimorphism (SD) is a common phenomenon in the animal kingdom, especially in lizards. The mountain dragon (Diploderma micangshanensis) is a Chinese endemic that is widely distributed in montane regions of northern Sichuan, western Hubei Province, southern Gansu, Henan, and Shanxi Provinces. However, little is known about its morphology, ecology, behavior, physiology, and natural history. In this study, SD in size and shape in a population of D. micangshanensis from Henan Province, Central China was examined based on a sample of 35 males and 23 females. Sexual dimorphism was observed in a few body shape variables (e.g., head and trunk length) but not in body size (snout-vent length). Males had longer and wider heads and shorter trunks. Sexual dimorphism in these traits can be explained by the sexual selection, ecological divergence, and fecundity advantage hypotheses. Additional studies of the ecology, reproductive biology, natural history, and behavior of D. micangshanensis are needed to evaluate the relative contributions of these mechanisms to determining the patterns of SD observed in this population.

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中国中部山龙米康山双皮虫的两性异形

两性异形(SD)是动物界的一种普遍现象，尤其是在蜥蜴中。米仓山龙(Diploderma micangshanensis)是中国的特有种，广泛分布于四川北部、湖北西部、甘肃南部、河南和山西等地的山区。然而，人们对其形态、生态、行为、生理和自然历史知之甚少。本文以河南省米仓山d.m icangshanensis为研究对象，选取35只雄性和23只雌性，对其种群的大小和形态进行了分析。在一些体型变量(如头部和躯干长度)中观察到性别二态性，但在体型(口鼻长度)中没有观察到性别二态性。雄性的头更长更宽，躯干更短。这些性状的两性二态性可以用性选择、生态分化和繁殖力优势假说来解释。需要进一步的生态学、生殖生物学、自然历史和行为研究来评估这些机制对确定该种群中所观察到的SD模式的相对贡献。

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

Animal Biology 生物-动物学

CiteScore

2.10

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： Animal Biology publishes high quality papers and focuses on integration of the various disciplines within the broad field of zoology. These disciplines include behaviour, developmental biology, ecology, endocrinology, evolutionary biology, genomics, morphology, neurobiology, physiology, systematics and theoretical biology. Purely descriptive papers will not be considered for publication. Animal Biology is the official journal of the Royal Dutch Zoological Society since its foundation in 1872. The journal was initially called Archives Néerlandaises de Zoologie, which was changed in 1952 to Netherlands Journal of Zoology, the current name was established in 2003.