... option with Kaiser Normalization; all PCs with eigenvalues >1 were extracted, and all the variables with correlation coefficients <–0.5 and >0.5 were chosen for the interpretation of the extracted PCs. Fig. 9. Ventral views of the radiographic image of the head of P. americana...

... System . Springfield, IL : Charles C. Thomas . Lauridsen   H. , Hansen   K. , Wang   T. , Agger   P. , Andersen   J. L. , Knudsen   P. S. , Rasmussen   A. S. , Uhrenholt   L. , Pedersen   M. ( 2011 ). Inside out: modern imaging techniques to reveal animal anatomy...

... compressions are associated with excurrent gas exchange in the ground beetle Pterostichus stygicus , we used flow-through respirometry and synchrotron x-ray phase-contrast imaging to simultaneously record CO 2 emission and observe morphological changes in the major tracheae. Each observed tracheal compression...

...Jens Herberholz; Christopher J. Mims; Xiaodong Zhang; Xiaoping Hu; Donald H. Edwards SUMMARY Non-invasive imaging technologies such as Magnetic Resonance Imaging (MRI)are increasingly in demand by researchers in many biological disciplines. However, when imaging small animals such as invertebrates...

...Richard Stephenson; David R. Jones ABSTRACT Observations that the response of the avian heart rate to submergence varies under different circumstances have led to speculation about variability of blood flow distribution during voluntary dives. We used a radiological imaging technique to examine...