Sperm transfer through hypere-longated beetle penises - morphology and theoretical approaches
Sperm transfer through hypere-longated beetle penises - morphology and theoretical approaches
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DOI：
10.1038/s41598-019-46211-x
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发表时间：
2019-07-15
影响因子：
4.6
通讯作者：
Gorb, Stanislav N.
中科院分区：
文献类型：
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作者：
Matsumura, Yoko;Michels, Jan;Gorb, Stanislav N.
许多昆虫拥有一个直径只有几微米的超细长的插入器官。使用形态学和理论方法，我们研究了精子通过这些器官转移的生物力学，通过计算（1）精子通过毛细作用可以填充阴茎的距离和速度，（2）阴茎中产生的毛细血管压力，以及（3）需要多少压力才能将精子泵出阴茎。结果使我们能够提出以下假设：（1）阴茎填充基本上是通过毛细血管作用发生的，（2）精子运输到女性是通过收缩精子泵肌肉或通过精子的主动推进发生的。潜在的实验方法来测试这些假设进行了讨论。
Many insects possess a hyper-elongated intromittent organ with a diameter of only a few micrometers. Using morphological and theoretical approaches, we investigated the biomechanics of sperm transfer through such organs by calculating (1) how far and how fast sperm could fill in the penis by capillary action, (2) how much capillary pressure is generated in the penis, and (3) how much pressure is needed to pump sperm out of the penis. The results enabled us to propose the following hypotheses: (1) penile filling basically occurs by capillary action, and (2) sperm transport to females occurs by contracting the sperm pump muscles or by active propulsion of spermatozoa. Potential experimental approaches to test these hypotheses are discussed.