Plewa Barbara, Jackowiak Hanna
Department of Histology and Embryology, Poznan University of Life Sciences, Poznań, Poland.
Microsc Res Tech. 2020 Oct;83(10):1241-1250. doi: 10.1002/jemt.23516. Epub 2020 Jun 25.
Nowadays the processes of crossing of different mammalian species are well characterized in light of genetics, and possibility of reproduction. Generally, lack detailed studies on changes in anatomy and histology of internal systems of hybrids. Bison bonasus hybrid is an interspecific species between the bull of European bison (Bison bonasus), and female of domesticated cattle (Bos taurus). To study the anatomy of tongue and distribution of lingual papillae on Bison bonasus hybrid tongue, a stereomicroscopic and scanning electron microscopic observations was conducted. We aimed to study the appearance of macro- and microscopic traits in relation to parental species and other bovids. Results indicate that Bison bonasus hybrid tongue possesses characteristic traits for parental species and ruminants from Bovidae family and also species-specific features differ from mentioned animals. Specific new traits in hybrid are: V-shaped arrangement of lingual papillae on ventral surface of the tongue, rosette arrangement of conical papillae on the top of lingual prominence, bigger number of vallate papillae and closer arrangement of vallate papillae. In hybrid observed also the appearance of combination of parental traits. Similar to European bison are rectangular shape of lingual prominence and absence of filiform papillae on the root of tongue. Presence of lateral processes of filiform papillae on the apex of tongue, and arrangement of vallate papillae into two rows corresponded to cattle. Development of new morphological features of tongue and its mucosal papillae in Bison bonasus hybrid opens new issue for future studies on organs of digestive system in animals after hybridization.
如今，从遗传学和繁殖可能性的角度来看，不同哺乳动物物种的杂交过程已得到充分表征。一般来说，缺乏对杂交种内部系统解剖学和组织学变化的详细研究。欧洲野牛杂交种是欧洲野牛（Bison bonasus）公牛与家养母牛（Bos taurus）母牛之间的种间杂交物种。为了研究欧洲野牛杂交种舌头的解剖结构以及舌乳头在舌头上的分布，进行了体视显微镜和扫描电子显微镜观察。我们旨在研究宏观和微观特征的外观与亲本物种及其他牛科动物的关系。结果表明，欧洲野牛杂交种的舌头具有亲本物种和牛科反刍动物的特征，同时也具有与上述动物不同的物种特异性特征。杂交种的特定新特征包括：舌腹面舌乳头呈V形排列，舌隆起顶部的锥形乳头呈玫瑰花结排列，轮廓乳头数量更多且排列更紧密。在杂交种中还观察到亲本特征的组合出现。与欧洲野牛相似的是舌隆起呈长方形，舌根处无丝状乳头。舌尖处丝状乳头有侧突，轮廓乳头排成两排则与牛相似。欧洲野牛杂交种舌头及其黏膜乳头新形态特征的发育为杂交后动物消化系统器官的未来研究开辟了新课题。
