Animal Systematics

The Input of DNA Sequences to Animal Systematics: Rodents as Study Cases

Phylogenetic Systematics

Since the advent of the theory of evolutio n, o ne of the tasks of biology has bee n to i nvestigate the phyloge netic relatio nship betwee n species. This task is especially impor ta nt because all of the differe nces which exist betwee n species, whether i n morphology, physiology , or ecology, i n ways of behavior, or even i n geographical distributio n, have evolved , like the species thems...

Biological Systematics

Biological systematics encompasses three distinct activities: taxonomy, classification (which may or may not be a reasonable reflection of phylogeny) and nomenclature (Fig. 1). Although systematists rigorously and distinctly practice these three components, they are often amalgamated under the term “taxonomy.” While the breadth of “taxonomy” is clearly understood among most practitioners, it ca...

A new Pattern Systematics

Software patterns are a great aid in designing the architecture of application systems. They provide standard solutions for frequently occuring problems. This paper introduces a new schema for systematizing patterns. It arose from firstly, the investigation of a whole spectrum of different patterns and secondly, the application of the principles of human thinking to the classification of these ...

Systematics of Gobiidae

Th e family Gobiidae includes what are considered the typical gobies: small, usually marine fishes, with separate spinous and rayed dorsal fins and pelvic fi ns oft en joined into a disc, that live on or in the substrate and are generally inconspicuous. Color patterns may range from brightly patterned to drab and camoufl aged. Th e composition of this family has changed since the description of...