当前位置: X-MOL 学术Zoomorphology › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Aging-related histomorphometric changes in cortical bone tissue of bottlenose dolphins (Tursiops truncatus)
Zoomorphology ( IF 1 ) Pub Date : 2020-04-06 , DOI: 10.1007/s00435-020-00487-0
Manuela Zadravec , Nadica Maltar-Strmečki , Snježana Kužir , Tomislav Gomerčić , Mario Mitak , Martina Đuras

Morphological characteristics of bones have shaped as a result of adaptation to life in the aquatic environment and whale diving habits. This study deals with the postnatal bone development and microscopic characteristics of bones of bottlenose dolphins (Tursiops truncatus). Bone sections of the right humerus and the fifth right rib of 106 dolphins aged less than 1–21 years were used to determine the density of the primary, secondary and remodelling osteons, the magnitude of the area occupied by the osteons, and the number of osteon lamellae. Bone sections were analysed using a compound microscope with standard and polarized light. Our study showed the primary osteons of bones to occupy a smaller area than the secondary ones. The secondary osteon area in the humerus is significantly larger than that in the rib. All rib osteons are significantly denser than those of the humerus. In both bones, the number of osteon lamellae is higher in secondary than in primary osteons. The number of secondary and remodelling osteons and the areas occupied by them increase with age, as opposed to primary osteons in which a decrease was noted. The number of lamellae in primary osteons decreases with age, while in secondary osteons their number increases. Within the study frame, morphometric osteon values of the bottlenose dolphin were determined, to the best of our knowledge, for the first time ever as concerns the aquatic mammals.

中文翻译:

宽吻海豚(Tursiops truncatus)皮质骨组织的衰老相关组织形态学变化

骨骼的形态特征是由于适应水生环境和鲸鱼潜水习惯而形成的。这项研究涉及宽吻海豚 (Tursiops truncatus) 的出生后骨骼发育和骨骼的微观特征。对106只1-21岁以下海豚的右侧肱骨和右第五肋骨进行了骨切片,测定了初级、次级和重塑骨的密度,骨所占面积的大小,以及骨板片。使用具有标准光和偏振光的复合显微镜分析骨切片。我们的研究表明,骨骼的初级骨细胞比次级骨细胞占据的面积更小。肱骨的次生骨区明显大于肋骨。所有肋骨的密度都比肱骨的密度大得多。在这两种骨骼中,次级骨细胞的骨板片数量高于初级骨细胞。继发性和重塑性骨细胞的数量以及它们所占的面积随着年龄的增长而增加,而原发性骨细胞的数量则有所减少。初级骨细胞中的薄片数量随着年龄的增长而减少,而在次级骨细胞中,它们的数量增加。在研究框架内,据我们所知,第一次确定了宽吻海豚的形态骨细胞值,涉及水生哺乳动物。与注意到减少的原发性骨相反。初级骨细胞中的薄片数量随着年龄的增长而减少,而在次级骨细胞中,它们的数量增加。在研究框架内,据我们所知,第一次确定了宽吻海豚的形态骨细胞值,涉及水生哺乳动物。与注意到减少的原发性骨相反。初级骨细胞中的薄片数量随着年龄的增长而减少,而在次级骨细胞中,它们的数量增加。在研究框架内,据我们所知,第一次确定了宽吻海豚的形态骨细胞值,涉及水生哺乳动物。
更新日期:2020-04-06
down
wechat
bug