Does ecological divergence drive species-level evolutionary diversification? How so and to
what degree? These questions were central to the thinking of the evolutionary synthesis …

La comparación de caracteres anatómicos entre organismos ha sido un elemento central de
la biología comparada. Históricamente, la clasificación taxonómica y la comprensión de la …

Linear discriminant analysis (LDA) is a multivariate classification technique frequently
applied to morphometric data in various biomedical disciplines. Canonical variate analysis …

Over the last decade, geometric morphometric methods have been applied increasingly to
the study of human form. When too few landmarks are available, outlines can be digitized as …

Ecological character displacement describes a pattern where morphological differences
between sympatric species are enhanced through interspecific competition. Although widely …

Abstract Muller (1942) and Mayr (1963) hypothesized that natural selection indirectly causes
the evolution of reproductive barriers between allopatric populations by causing adaptive …

A recent phylogenetic analysis of mitochondrial DNA sequences from eretmodine cichlids
from Lake Tanganyika indicated independent origins of strikingly similar trophic …

Comparisons of neutral marker and quantitative trait divergence can provide important
insights into the relative roles of natural selection and neutral genetic drift in population …

Discovery of cryptic species using molecular tools has become common in many animal
groups but it is rarely accompanied by morphological revision, creating ongoing problems in …

The parasitoid Hymenoptera contain a large number of species complexes that are as yet
unresolved by traditional taxonomic studies. Evolutionary studies as well as biological …