In a recently published commentary, Mooi & Gill asserted that there is a crisis brewing in systematic ichthyology caused by a failure of investigators to apply the basic tenets of outgroup comparison to recover clades based solely on shared apomorphic characters. The result, they claim, is that many recent analyses disregard real synapomorphies and discover clades by phenetic rather than phylog...

A multivariate statistical analysis was performed on morphological characters of sixty-one populations of Avena eriantha Dur. A. clauda Dur., A. barbata Pott ex Link., A. wiestii Steud., A. fatua L., A. sterilis ssp. ludoviciana L. and A. sativa L. Factor analysis revealed that intraspecific morphological variations are due to quantitative characters. Interspecific as well as intersectional rel...

Abstract. Based on the material collected during fieldwork seasons from 1996 to 2007 in amount of 223 specimens, we studied phenetic relationships and taxonomic structure genus Cyphocottus. Two valid species, C. megalops eurystomus, within boundaries established by D.N. Taliev (1955) were confirmed Interspecific differences eurystomus are manifested greater values interorbital distance, height ...