Alexander Ziegler

TL;DR: The results show that the syringeal skeleton is optimized for low weight driven by physiological constraints on song production, and a cartilaginous structure suited to play a crucial role in the uncoupling of sound frequency and amplitude control, which permits a novel explanation of the evolutionary success of songbirds.

TL;DR: The present paper presents brief reviews on these topics, followed by a discussion of the general challenges that cephalopod research is bound to face in the near future.

TL;DR: A systematic search was conducted using the MEDLINE, BIOSIS, Cochrane Library, EMBASE, Google Scholar, Web of Science, PLoS and BioMed Central databases, and many rarely cited articles were included to summarize current knowledge regarding C-shaped roots and root canals.

TL;DR: The principles underlying various applications of this technique such as the use of contrast agents, in vivo MRI, functional MRI, as well as magnetic resonance spectroscopy are outlined to initiate further uses of MRI in zoology.

TL;DR: This investigation explores the possibility to systematically visualize the internal anatomy of echinoids obtained from various museum collections and shows that magnetic resonance imaging can give rapid, destruction-free access to morphological data from numerous specimens, thus extending the range of techniques available for comparative studies of invertebrate morphology.