Mechanical properties of a female reproductive tract of a beetle and implications for penile penetration
Mechanical properties of a female reproductive tract of a beetle and implications for penile penetration
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甲虫雌性生殖道的机械特性及其对阴茎插入的影响
DOI：
10.1098/rspb.2021.1125
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发表时间：
1954
期刊：
影响因子：
--
通讯作者：
Gorb S.N.
中科院分区：
文献类型：
--
作者：
Matsumura Y;Kovalev A;Gorb S.N.
雄性和雌性生殖器的共同进化在动物中广泛存在。然而，很少有研究探讨了交配过程中生殖器相互作用的机制。我们的特点是细长的女性生殖器，受精囊管，小金龟子，Cassida rubiginosa的机械性能。这些数据进行了比较的机械性能的细长的男性生殖器，鞭毛。我们分析了材料分布的受精囊管使用显微镜技术，建立了一个拉伸试验装置，在光学显微镜下进行拉伸试验。直径和拉伸刚度梯度存在沿着受精囊管，但其杨氏模量和材料分布或多或少均匀。结果证实了基于数值模拟的假设，即受精囊管比鞭毛更刚性。在研究物种中，阴茎插入力简单地施加到超细长鞭毛的基部，并沿着鞭毛传递到其尖端。考虑到这种简单的穿透机制，与鞭毛相比，受精囊管相对较低的柔性可能是鞭毛有效穿透所必需的。
Coevolution of male and female genitalia is widespread in animals. Nevertheless, few studies have examined the mechanics of genital interactions during mating. We characterized the mechanical properties of the elongated female genitalia, the spermathecal duct, of the small cassidine beetle,Cassida rubiginosa. The data were compared with the mechanical properties of the elongated male genitalia, the flagellum. We analysed the material distributions of the spermathecal duct using a microscopy technique, established a tensile test setup under a light microscope and conducted tensile tests. Diameter and tensile stiffness gradients were present along the spermathecal duct, but its Young's modulus and material distribution were more or less homogeneous. The results confirmed the hypothesis based on numerical simulations that the spermathecal duct is more rigid than the flagellum. In the study species, the penile penetration force is simply applied to the base of the hyper-elongated flagellum and conveyed along the flagellum to its tip. Considering this simple penetration mechanism, the relatively low flexibility of the spermathecal duct, compared to the flagellum, is likely to be essential for effective penetration of the flagellum.
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影响因子：
4.6
作者：
Matsumura, Yoko;Michels, Jan;Gorb, Stanislav N.
通讯作者：
Gorb, Stanislav N.
性交的磁共振成像 (MRI)：传教士体位的第二次体验和后位体位的初次体验
影响因子：
2.5
作者：
A. Faix;J. Lapray;O. Callede;A. Maubon;K. Lanfrey
通讯作者：
K. Lanfrey
影响因子：
2.6
作者：
Brennan, Patricia L. R.
通讯作者：
Brennan, Patricia L. R.
DOI：
10.1007/s00339-021-04439-3
发表时间：
2021-05-01
影响因子：
2.7
作者：
Stamm, Karen;Saltin, Brian Daniel;Dirks, Jan-Henning
通讯作者：
Dirks, Jan-Henning
Chelymorpha alternans Boheman（鞘翅目：叶甲科：Cassidinae）的交配求偶。
DOI：
--
发表时间：
1995
期刊：
影响因子：
--
作者：
V. Rodríguez
通讯作者：
V. Rodríguez