Intra-population variation and geographic correlation in Canthon humectus hidalgoensis using FTIR-ATR spectroscopy

In some cases external morphology is not sufficient to discern between populations of a species, as occurs in the dung beetle Canthon humectus hidalgoensis Bates; and much less to determine phenotypic distances between them. FTIR-ATR spectroscopy show several advantages over other identification techniques (e.g. morphological, genetic, and cuticular hydrocarbons analysis) due to the non-invasive manner of the sample preparation, the relative speed of sample analysis and the low-cost of this technology. The infrared spectrum obtained is recognized to give a unique ‘fingerprint’ because vibrational spectra are specific and unique to the molecular nature of the sample. In our study, results showed that proteins, amino acids and aromatic ethers of insect exocuticle have promising discriminative power to discern between different populations of C. h. hidalgoensis. Furthermore, the correlation between geographic distances between populations and the chemical distances obtained by proteins + amino acids + aromatic ethers was statistically significant, showing that the spectral and spatial information available of the taxa together with appropriated chemometric methods may help to a better understanding of the identity, structure, dynamics and diversity of insect populations.

The Global Economy in 2030: Trends and Strategies for Europe. CEPS Paperback, 2 April 2014

This groundbreaking study concentrates on a set of critical economic factors that will shape future economic growth at the global level and offers a description of the possible evolution of their reach and scope. Our goal in pursuing this research is not to make precise predictions about growth rates or the size of individual economies, but to provide a guide for EU policy-makers by presenting an assessment of the possible implications of such trends for the global economy and the policy challenges they raise for Europe. In an attempt to respond to this need, this study concentrates on a set of critical economic factors that will shape future economic growth at the global level and offers a description of the possible evolution of their reach and scope, which often go beyond the purely economic dimension. Our ultimate goal is to provide a guide for policy-makers by presenting an assessment of the possible implications of such trends for the global economy and the policy challenges they raise for Europe.