Jubilato Fernanda C, Comelis Manuela T, Bueno Larissa M, Taboga Sebastião R, Góes Rejane M, Morielle-Versute Eliana
Department of Zoology and Botany, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), Campus São José do Rio Preto, São Paulo State University (UNESP), São Paulo, Brazil.
Department of Biology, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), Campus São José do Rio Preto, São Paulo State University (UNESP), São Paulo, Brazil.
J Morphol. 2019 Dec;280(12):1759-1776. doi: 10.1002/jmor.21062. Epub 2019 Oct 14.
The penises of bats are taxonomically distinctive in size and shape. In addition, they are variable in microscopic anatomy, indicating that histomorphological studies of copulatory organs of bats may help understanding their successful reproductive strategies. We studied adult males of 13 species of vespertilionid and phyllostomid bats. Both families exhibited the basic structure of the vascular penis of mammals: the hydrostatic elements of the corpora cavernosa and the corpus spongiosum surrounding the urethra, as well as accessory cavernous tissue. Variation in the position and amount of the tissues were observed in these families. Vespertilionid bats have a small glans penis with abundant accessory cavernous tissue on the prepuce and a highly variable baculum. The baculum varied in size and morphology, even among congeneric species, such as the three Lasiurus species and the two Myotis species. Phyllostomid species possess no bacula, but vascular structures are present to produce penile stiffening, particularly on the glans. Variation in the microscopic anatomy of the phyllostomid prepuce was observed, for example, Artibeus species had accessory cavernous tissue surrounded by a tunica albuginea, but Carollia perspicillata had two bundles of striated musculature and some adipose tissue; abundant pigments were present in the prepuce of most species.
蝙蝠的阴茎在分类学上具有独特的大小和形状。此外，它们在微观解剖结构上存在差异，这表明对蝙蝠交配器官的组织形态学研究可能有助于理解它们成功的繁殖策略。我们研究了13种蝙蝠科和叶口蝠科成年雄性蝙蝠。这两个科都呈现出哺乳动物血管阴茎的基本结构：海绵体的液压元件以及围绕尿道的尿道海绵体，还有附属海绵组织。在这些科中观察到了组织位置和数量的变化。蝙蝠科蝙蝠的阴茎头较小，包皮上有丰富的附属海绵组织，阴茎骨高度可变。阴茎骨在大小和形态上存在差异，即使在同属物种中也是如此，比如三种犬吻蝠属物种和两种鼠耳蝠属物种。叶口蝠科物种没有阴茎骨，但存在血管结构以产生阴茎勃起，特别是在阴茎头上。观察到叶口蝠科包皮的微观解剖结构存在差异，例如，短尾果蝠属物种有被白膜包围的附属海绵组织，但食果蝠有两束横纹肌和一些脂肪组织；大多数物种的包皮中都有丰富的色素。
