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在没有阴茎的鸟类中,强迫额外对配的最终驱动因素是: jackdaws作为一个案例研究

Rebecca Hooper¹, Kathryn Maher², Karen Moore³

¹Centre for Research in Animal Behaviour, University of Exeter, Exeter, UK.

Royal Society open science

|March 28, 2024

概括

在没有阴茎的鸟类中,强迫非对性交 (FEPC) 持续存在,因为它可能为雄性提供选择性优势或是进化遗迹. 需要进一步的研究来了解其父亲的成功和成本.

科学领域:

进化生物学是进化的生物学.
动物行为动物行为
鸟类学鸟类学是一门学科.

背景情况:

强迫性交配在动物中很常见,通常与男性生殖成功的增加有关.
在没有阴茎的鸟类中观察到强制性外对交配 (FEPC),这挑战了关于受精需要雌性合作的传统观点.
这些物种中FEPC的持久性,尽管假定生殖成功率低,男性的潜在成本低,仍然无法解释.

研究的目的:

调查在没有阴茎的鸟类中强迫外对交配 (FEPC) 持续存在的原因.
量化FEPC导致的外对父性率在 (Corvus monedula) 中.
探索FEPC维护的潜在解释,例如男性的选择性优势或其作为进化遗迹的性质.

主要方法:

利用单核酸多态 (SNP) 来确定子中的额外对父性率.
将遗传分析与行为观察结合起来进行综合性研究.
进行了一项文献审查,以对缺乏阴茎的鸟类种类中FEPC的证据进行整理.

主要成果:

FEPC在子中量化,为没有阴茎的物种提供了案例研究.
这项研究表明,的FEPC是由于男性的选择性优势或作为潜在的过时行为 (遗迹) 而维持的.
文献综述显示,FEPC在没有阴茎的鸟类中分类学上广泛存在,但其进化基础尚不清楚.

结论:

的FEPC持久性很可能是由雄性选择优势或其作为进化遗迹的地位驱动的.
在没有阴茎的鸟类中,FEPC是一种广泛的现象,需要进一步的进化研究.
未来的研究应该调查强制性交配中阴茎对父权的必要性,并量化FEPC的相关成本.

关键词:

在 FEPC 中, FEPC 是一个专业的组织.这种交配,就是交配.一个额外的对.强迫强迫强迫强迫强迫强迫强迫杰克多 (Jackdaw) 是一个小鸟.

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