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小哺乳动物的性体型变异:立陶宛的一个案例研究

Linas Balčiauskas¹, Laima Balčiauskienė¹

¹Nature Research Centre, Akademijos 2, 08412 Vilnius, Lithuania.

|January 8, 2025

概括

性尺寸变态 (SSD) 在立陶宛的14种,老鼠和物种中存在差异. 在一些物种中发生了男性偏见的SSD,而在其他物种中发现了女性偏见的SSD,其中和一只小鼠物种没有表现出二重形态.

科学领域:

动物学动物学
生态生态学生态生态学
进化生物学进化生物学

背景情况:

性尺寸变态 (SSD) 是一个关键的进化特征.
立陶宛小型哺乳动物SSD的长期数据已经过时.
要了解SSD模式,需要进行国际比较.

研究的目的:

为了评估立陶宛14种动物和鼠物种的SSD.
更新和扩展35年前以前的SSD研究.
为未来关于SSD和气候变化的研究提供基线数据.

主要方法:

对青少年,未成年人和成年人的标准形态学特征的分析.
使用ANOVA,t测试和5%的显著性值.
纳入长期调查数据和国际比较.

主要成果:

在 *Apodemus flavicollis*, *Alexandromys oeconomus* 和三个草地物种中观察到男性偏向的SSD,在成年人中最强.
在 *Clethrionomys glareolus* 和四种小鼠中突出存在女性偏向的SSD,年龄模式可变.
和Apodemus uralensis是单态的;在一些物种中观察到产后的SSD过渡.

结论:

在立陶宛的小哺乳动物中,SSD存在显著的差异.
固态硬盘模式是特定于物种的,在开发过程中会发生变化.
新的数据支持未来对SSD在环境变化下的适应意义的研究.

关键词:

年龄组年龄组.长期研究是指长期研究.鼠标鼠标鼠标鼠标形态学上的差异.螺旋的螺旋是什么意思在这里,我们可以看到 voles voles.

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