期刊
SCIENCE OF NATURE
卷 103, 期 1-2, 页码 -出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00114-016-1333-8
关键词
Malformation; Regeneration; Limb development; Morphology; Micro-computed tomography; Sea spider; Pantopoda
资金
- Deutsche Forschungsgemeinschaft [Scho 442/13-1]
- cluster of excellence Image Knowledge Gestaltung-an interdisciplinary laboratory, base project Genesis and Genealogy of Form at Humboldt-Universitat zu Berlin
A malformed adult female specimen of Pycnogonum litorale (Pycnogonida) with a supernumerary leg in the right body half is described concerning external and internal structures. The specimen was maintained in our laboratory culture after an injury in the right trunk region during a late postembryonic stage. The supernumerary leg is located between the second and third walking legs. The lateral processes connecting to these walking legs are fused to one large structure. Likewise, the coxae 1 of the second and third walking legs and of the supernumerary leg are fused to different degrees. The supernumerary leg is a complete walking leg with mirror image symmetry as evidenced by the position of joints and muscles. It is slightly smaller than the normal legs, but internally, it contains a branch of the ovary and a gut diverticulum as the other legs. The causes for this malformation pattern found in the Pycnogonum individual are reconstructed in the light of extirpation experiments in insects, which led to supernumerary mirror image legs, and the boundary model for appendage differentiation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据